WO2021112111A1 - エポキシ樹脂組成物、繊維強化複合材料用成形材料および繊維強化複合材料 - Google Patents
エポキシ樹脂組成物、繊維強化複合材料用成形材料および繊維強化複合材料 Download PDFInfo
- Publication number
- WO2021112111A1 WO2021112111A1 PCT/JP2020/044789 JP2020044789W WO2021112111A1 WO 2021112111 A1 WO2021112111 A1 WO 2021112111A1 JP 2020044789 W JP2020044789 W JP 2020044789W WO 2021112111 A1 WO2021112111 A1 WO 2021112111A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- epoxy resin
- component
- resin composition
- fiber
- reinforced composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/58—Epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3819—Low-molecular-weight compounds having heteroatoms other than oxygen having nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3878—Low-molecular-weight compounds having heteroatoms other than oxygen having phosphorus
- C08G18/388—Low-molecular-weight compounds having heteroatoms other than oxygen having phosphorus having phosphorus bound to carbon and/or to hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/725—Combination of polyisocyanates of C08G18/78 with other polyisocyanates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
- C08G18/792—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/798—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing urethdione groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
- C08G59/4014—Nitrogen containing compounds
- C08G59/4021—Ureas; Thioureas; Guanidines; Dicyandiamides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/10—Reinforcing macromolecular compounds with loose or coherent fibrous material characterised by the additives used in the polymer mixture
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/241—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres
- C08J5/243—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres using carbon fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/249—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs characterised by the additives used in the prepolymer mixture
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
Definitions
- the present invention relates to an epoxy resin composition preferably used for a fiber-reinforced composite material such as an aerospace member and an automobile member, and a molding material for a fiber-reinforced composite material and a fiber-reinforced composite material using the same. ..
- Fiber-reinforced composite materials made of reinforced fibers and matrix resins utilize their high specific strength and specific elastic modulus to be used as structural materials for aircraft and automobiles, as well as for sports and general industrial applications such as tennis rackets, golf shafts, and fishing rods. It has been used for such purposes.
- the reinforcing fiber glass fiber, aramid fiber, carbon fiber, boron fiber and the like are used.
- the matrix resin both a thermosetting resin and a thermoplastic resin are used, but from the viewpoint of heat resistance and productivity, a thermosetting resin is often used.
- the thermosetting resin epoxy resin, unsaturated polyester resin, vinyl ester resin, phenol resin, bismaleimide resin, cyanate resin and the like are used. Of these, epoxy resins are preferably used from the viewpoints of adhesiveness and dimensional stability between the resin and the reinforcing fiber, and mechanical properties such as strength and rigidity of the obtained composite material.
- Such thickening techniques include a technique of dissolving or swelling a thermoplastic particle or a thermoplastic resin in an epoxy resin, a technique of reacting an epoxy group with an amine or an acid anhydride to form a crosslinked structure, and a technique of reacting an isocyanate with a hydroxyl group.
- a technique for forming polyurethane in a cross-linking system is known.
- an epoxy resin composition containing a hydroxyl group-containing vinyl ester as a hydroxyl group source, a urethane prepolymer obtained by reacting a low molecular weight diol prepared in advance with 4,4'-diphenylmethane diisocyanate has been disclosed.
- Patent Document 1 an epoxy resin composition containing a liquid bisphenol A type epoxy and a polypeptide MDI as a hydroxyl group source is disclosed (Patent Document 2).
- an epoxy resin composition containing a urethane prepolymer obtained by reacting a pre-prepared polyether polyol with TDI is disclosed (Patent Document 3).
- the resin viscosity at 30 ° C. is low from the viewpoint of impregnation property into the reinforcing fibers.
- the resin viscosity after thickening has a sufficient viscosity so that the resin does not leak from the fibers during standing.
- the viscosity of the resin changes according to the seasonal temperature, and the viscosity of the resin increases especially at 0 to 10 ° C. in winter, and the resin after thickening may be broken at the time of shaping. Therefore, in order to maintain good shapeability regardless of seasonal fluctuations, the thickened resin needs to be sufficiently flexible even at low temperatures.
- the molding material for a fiber-reinforced composite material obtained by using the above epoxy resin composition good fluidity is required at the time of molding. Further, in the fiber-reinforced composite material obtained by using the above-mentioned molding material for the fiber-reinforced composite material, sufficient heat resistance and bending strength are required so that the shape is not deformed at the time of demolding.
- the urethane prepolymer composed of an aliphatic low molecular weight diol has a high viscosity at 30 ° C., and the heat resistance of the fiber-reinforced composite material is lowered by blending. Met.
- the viscosity of the obtained epoxy resin composition was high, and the impregnation property into the reinforcing fibers was insufficient.
- the viscosity of the resin thickener at 10 ° C. was high, and the shapeability under low temperature conditions was insufficient.
- the bending strength of the obtained fiber-reinforced composite material was also low.
- the cured product of the epoxy resin composition has excellent heat resistance.
- the viscosity of the resin thickener at 10 ° C. was high, and the shapeability under low temperature conditions was insufficient. Therefore, the shapeability of the obtained molding material for the fiber-reinforced composite material is insufficient, and the fluidity at the time of molding is also insufficient.
- the urethane prepolymer obtained by the reaction between the pre-prepared polyether polyol and TDI has a flexible molecular skeleton composed of an aliphatic substance, and the obtained epoxy resin is obtained.
- the resin thickened product of the composition had a low viscosity at 10 ° C., the heat resistance of the cured product was insufficient.
- the resin viscosity of the epoxy resin composition is high, and the impregnation property into the reinforcing fibers is insufficient. Further, the bending strength of the obtained fiber-reinforced composite material was also low.
- the fiber-reinforced composite obtained by exhibiting excellent shapeability under low temperature conditions of the molding material for the fiber-reinforced composite material while maintaining good impregnation property into the reinforcing fiber. There was no technology that could develop the heat resistance and bending strength of the material.
- an object of the present invention is an epoxy resin that improves the drawbacks of the prior art, has excellent impregnation property into reinforcing fibers, has excellent shapeability under low temperature conditions after thickening, and has excellent heat resistance after curing.
- an epoxy resin composition By providing the composition, and further, by using such an epoxy resin composition, it is possible to provide a molding material for a fiber-reinforced composite material which is excellent in shapeability at the time of handling and fluidity at the time of press molding. It is an object of the present invention to provide a fiber-reinforced composite material having excellent heat resistance and bending strength by using a molding material for a fiber-reinforced composite material.
- the epoxy resin composition of the present invention has the following constitution. That is, The content of the component (A) in the total mass of 100% by mass of the epoxy resin composition is 30% by mass or more and 95% by mass or less, and the component (C) contains all of the following components (A) to (D).
- an epoxy resin composition having excellent impregnation property into reinforcing fibers, excellent shapeability under low temperature conditions after thickening, and excellent heat resistance after curing and further, such an epoxy resin composition.
- a material a molding material for a fiber-reinforced composite material having excellent shapeability during handling and fluidity during press molding can be provided, and further, by using such a molding material for a fiber-reinforced composite material, heat resistance can be obtained. It is possible to provide a fiber-reinforced composite material having excellent properties and mechanical properties.
- the epoxy resin composition of the present invention contains all of the following components (A) to (D), and the content of the component (A) in 100% by mass of the total mass of the epoxy resin composition is 30% by mass or more and 95% by mass.
- the ratio Wc / Wd of the content Wc of the component (C) and the content Wd of the component (D) is 0.01 or more and 10 or less.
- the epoxy resin of the component (A) in the present invention is not particularly limited as long as it is a compound containing one or more epoxy groups in the molecule.
- Examples of the component (A) include bisphenol A type epoxy resin, bisphenol F type epoxy resin, biphenyl type epoxy resin, dicyclopentadiene type epoxy resin, and epoxy resins modified from these.
- phenol novolac type epoxy resin cresol type epoxy resin, tetraglycidyldiaminodiphenylmethane, triglycidylaminophenol, glycidylamine type epoxy resin such as tetraglycidylamine, tetrakis (glycidyloxyphenyl) ethane and tris (glycidyloxymethane)
- glycidyl ether type epoxy resins epoxy resins modified thereto, brominated epoxy resins obtained by bromizing these epoxy resins, and polyglycidyl ethers of aliphatic alcohols.
- aliphatic alcohols examples include 1,4-butanediol, 3-methyl-1,5-pentanediol, diethylene glycol, neopentyl glycol, 1,6-hexanediol, 1,9-nonanediol, cyclohexanedimethanol, and propylene glycol.
- component (A) two or more kinds of these epoxy resins may be used in combination.
- the component (A) is a hydroxyl group-containing epoxy resin that is liquid at 30 ° C.
- the component (A) is a hydroxyl group-containing epoxy resin that is liquid at 30 ° C.
- Examples of commercially available products of the tetramethylbisphenol F type epoxy resin which is an alkyl substituent include "Epototo (registered trademark)" YSLV-80XY (Nippon Steel & Sumikin Chemical Co., Ltd.).
- Examples of the bisphenol S type epoxy resin include "Epiclon (registered trademark)" EXA-1515 (manufactured by DIC Corporation).
- phenol novolac type epoxy resins include "jER (registered trademark)” 152, “jER (registered trademark)” 154 (all manufactured by Mitsubishi Chemical Corporation), “Epicron (registered trademark)” N-740, “ Examples thereof include Epicron (registered trademark) “N-770 and” Epicron (registered trademark) “N-775 (all manufactured by DIC Corporation).
- cresol novolac type epoxy resin Commercially available products of cresol novolac type epoxy resin include "Epiclon (registered trademark)” N-660, “Epiclon (registered trademark)” N-665, “Epiclon (registered trademark)” N-670, and “Epiclon (registered trademark)”. "N-673,” Epicron (registered trademark) "N-695 (above, manufactured by DIC Corporation), EOCN-1020, EOCN-102S, EOCN-104S (above, manufactured by Nippon Kayaku Co., Ltd.), etc. Be done.
- the content of the component (A) in 100% by mass of the total mass of the epoxy resin composition is 30% by mass or more and 95% by mass or less.
- the content of the component (A) is 30% by mass or more, sufficient heat resistance can be exhibited.
- the content of the component (A) is 95% by mass or less, a sufficient effect of improving the bending strength can be obtained.
- the content of the component (A) is more preferably 50% by mass or more and 90% by mass or less.
- the curing agent for the component (B) in the present invention is not particularly limited as long as it can cure the epoxy resin, but is not particularly limited, but is amine-based, phenol-based, acid anhydride-based, mercaptan-based, imidazoles, 3. Examples thereof include primary amines, organic phosphorus compounds, urea compounds, ammonium salts, and sulfonium salts. Examples of the amine-based curing agent include dicyandiamide, aromatic polyamine, aliphatic amine, aminobenzoic acid esters, thiourea-added amine, and hydrazide. Examples of the phenol-based curing agent include bisphenol, phenol novolac resin, cresol novolak resin, and polyphenol compound.
- Examples of the acid anhydride-based curing agent include phthalic anhydride, maleic anhydride, succinic anhydride, and carboxylic acid anhydride.
- Examples of the mercaptan-based curing agent include polymercaptan and polysulfide resin. Among those exemplified, amine-based curing agents are preferable.
- the component (B) is dicyandiamide or a derivative thereof.
- Dicyandiamide tends to give high bending strength and heat resistance to a cured resin product.
- the storage stability of the epoxy resin composition is likely to be excellent.
- the derivative of dicyandiamide means a compound obtained by combining dicyandiamide with various compounds, and like dicyandiamide, it is excellent in that it easily imparts high bending strength and heat resistance to a cured resin product, and has an epoxy resin composition. It also has excellent storage stability.
- Examples of the derivative of dicyandiamide include those obtained by combining dicyandiamide with various compounds such as an epoxy resin, a vinyl compound, an acrylic compound, and 9,10-dihydro-9-oxa-10-phosphophenanthrene-10-oxide. Be done. These may be used individually by 1 type, and may be used in combination of 2 or more type. It may also be used in combination with dicyandiamide. Examples of commercially available products of dicyandiamide include "jER Cure (registered trademark)" DICY7 and DICY15 (all manufactured by Mitsubishi Chemical Corporation).
- the content of the component (B) in the present invention is preferably 1 part by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the component (A). More preferably, it is 8 parts by mass or more and 50 parts by mass or less.
- the content of the component (B) is 1 part by mass or more, a sufficient effect of improving the curability can be easily obtained. Further, when the content of the component (B) is 50 parts by mass or less, the heat resistance of the cured product of the obtained epoxy resin composition is more likely to be improved.
- the component (C) in the present invention is not particularly limited as long as it is a diisocyanate compound having a continuous double bond structure, an alicyclic structure or a heterocyclic structure.
- the continuous double bond structure include an allene structure, a carbodiimide structure, and a horse mackerel structure.
- the alicyclic structure is a cyclic chemical structure composed of a fat chain, and examples thereof include a cycloalkane structure and a cycloalkene structure.
- the heterocyclic structure is a cyclic chemical structure containing at least two different elements in the ring, and examples thereof include a uretdione ring, an isocyanurate ring, and a uretonimine ring.
- diisocyanate compound of the component (C) examples include compounds modified with the diisocyanate compound carbodiimide as diisocyanate compounds having a continuous double-bonded structure, and examples of the diisocyanate compounds include aromatic diisocyanates, aliphatic diisocyanates, and fats. Cyclic diisocyanates, aralkyl diisocyanates, and mixtures thereof can be mentioned, for example, 4,4'-diphenylmethane diisocyanate (MDI), 2,6-tolylene diisocyanate (2,6-TDI), 2,4-tolylene diisocyanate.
- MDI 4,4'-diphenylmethane diisocyanate
- 2,6-tolylene diisocyanate 2,6-tolylene diisocyanate
- 2,6-TDI 2,4-tolylene diisocyanate.
- diisocyanate compound having an alicyclic structure examples include hydrogenated xylylene diisocyanate (HXDI), norbornane diisocyanate (NBDI), isophorone diisocyanate (IPDI), and 2,4-bis (8-isocyanatooctyl) -1,3-dioctyl.
- HXDI hydrogenated xylylene diisocyanate
- NBDI norbornane diisocyanate
- IPDI isophorone diisocyanate
- 2,4-bis (8-isocyanatooctyl) -1,3-dioctyl examples of the diisocyanate compound having an alicyclic structure.
- Cyclobutane (OCDI) 4,4'-dicyclohexylmethane diisocyanate (HMDI) and the like can be mentioned.
- diisocyanate compound having a heterocyclic structure examples include diisocyanate and trimerate of the diisocyanate compound, and examples of the diisocyanate compound include aromatic diisocyanate, aliphatic diisocyanate, alicyclic diisocyanate, and aralkyl diisocyanate.
- Mixtures can be mentioned, for example, 4,4'-diphenylmethane diisocyanate (MDI), 2,6-tolylene diisocyanate (2,6-TDI), 2,4-tolylene diisocyanate (2,4-TDI), and the like.
- Naphthalenediocyanate (NDI), 1-methoxybenzene-2,4-diisocyanate (MBDI), metaxylene diisocyanate (MXDI), 1,6-hexamethylene diisocyanate (HDI), 2,2,4-trimethylhexamethylene diisocyanate (TMHDI) ), 1,12-Diisocyanate dodecane (DDI), hydrogenated xylylene diisocyanate (HXDI), norbornan diisocyanate (NBDI), isophorone diisocyanate (IPDI), 2,4-bis (8-isocyanatooctyl) -1,3- Dioctylcyclobutane (OCDI), 4,4'-dicyclohexylmethane diisocyanate (HMDI), xylylene diisocyanate (XDI), tetramethylxylylene diisocyanate (TMXDI), diphenylsulfide-4
- component (C) Commercially available products of component (C) include "Millionate (registered trademark)” MTL, “Cosmonate (registered trademark)” LL, “Cosmonate (registered trademark)” LK, as diisocyanates having a continuous double bond structure. "Cosmonate (registered trademark)” LT, “Cosmonate (registered trademark)” LI (above, manufactured by Mitsui Chemicals, Inc.), “Luplanate (registered trademark)” MM-103 (manufactured by BASF INOAC Polyurethane Co., Ltd.), etc. Can be mentioned.
- diisocyanate compounds having an alicyclic structure "Death module (registered trademark)" I, “Death module (registered trademark)” W (all manufactured by Sumika Cobestlor Urethane Co., Ltd.) "Takenate (registered trademark)” "600,” NBID® "norbornane diisocyanate (manufactured by Mitsui Chemicals, Inc.), dicyclohexylmethane-4,4'-diisocyanate (isomer mixture) (manufactured by Tokyo Kasei Kogyo Co., Ltd.) And so on.
- Examples of the diisocyanate compound having a heterocyclic structure include “Death Module (registered trademark)” N3400 (manufactured by Sumika Covestro Urethane Co., Ltd.).
- the component (C) has the following chemical structure in the molecule.
- the component (C) has a linear structure.
- the linear structure is a structure in which carbon atoms are connected without branching. Since the component (C) has a linear structure, it can have better shapeability under low temperature conditions.
- the component (C) is an aromatic isocyanate compound.
- the component (C) is an aromatic isocyanate compound, more excellent heat resistance of the cured product can be easily obtained.
- the viscosity of the component (C) at 30 ° C. is preferably 10 mPa ⁇ s or more and 1000 mPa ⁇ s or less, more preferably 10 mPa ⁇ s or more and 600 mPa ⁇ s or less. It is more preferably s or more and 300 mPa ⁇ s or less.
- the viscosity is measured with an E-type viscometer.
- the viscosity at the time of resin impregnation does not become too low, so that the resin does not flow out to the outside of the reinforcing fiber, and it is easy to uniformly impregnate the reinforcing fiber base material at 30 ° C.
- the viscosity is 1000 mPa ⁇ s or less, the impregnation property into the reinforcing fiber is excellent, and a high-quality fiber-reinforced composite material can be obtained.
- the epoxy resin composition of the present invention contains, as the component (D), a polyisocyanate compound excluding the component (C).
- component (D) examples include 4,4'-diphenylmethane diisocyanate (MDI), 2,6-toluene diisocyanate (2,6-TDI), 2,4-toluene diisocyanate (2,4-TDI), and the like.
- Naphthalenediocyanate (NDI), 1-methoxybenzene-2,4-diisocyanate (MBDI), xylylene diisocyanate (XDI), metaxylene diisocyanate (MXDI), 1,6-hexamethylene diisocyanate (HDI), 2,2,4 -Trimethylhexamethylene diisocyanate (TMHDI), 1,12-diisocyanate dodecane (DDI), tetramethylxylylene diisocyanate (TMXDI), diphenylsulfide-4,4'-diisocyanate, diphenylsulfon-4,4'-diisocyanate, diphenyl ether- Examples thereof include 4,4'-diisocyanate, diphenylketone-4,4'-diisocyanate, polymethylene polyphenyl polyisocyanate, and those having a structure in which these are linked by a methylene group or the like. In addition,
- the component (D) is a polyisocyanate compound having 3 or more and 10 or less isocyanate groups in one molecule. Having three or more isocyanate groups in one molecule is preferable because the fluidity of the molding material for a fiber-reinforced composite material using the obtained epoxy resin composition is improved. Further, it is preferable to have 10 or less isocyanate groups in one molecule because high heat resistance is exhibited in the cured product of the obtained epoxy resin composition.
- the component (D) is an aromatic isocyanate compound.
- the component (D) is an aromatic isocyanate compound, the cured product of the obtained epoxy resin composition tends to exhibit higher heat resistance.
- component (D) Commercially available products of component (D) include “Duranate (registered trademark)” D101, “Duranate (registered trademark)” D201 (all manufactured by Asahi Kasei Co., Ltd.), “Luplanate (registered trademark)” MS, and “Luplanate (registered)”.
- the ratio Wc / Wd of the content Wc of the component (C) to the content Wd of the component (D) is 0.01 or more and 10 or less.
- Wc / Wd is 0.01 or more, the molding material for a fiber-reinforced composite material using the obtained epoxy resin composition exhibits higher fluidity. Further, when Wc / Wd is 10 or less, the cured product of the obtained epoxy resin composition tends to exhibit higher heat resistance.
- Wc / Wd is preferably 0.1 or more and 10 or less.
- both the component (C) and the component (D) are aromatic isocyanate compounds. Since both the component (C) and the component (D) are aromatic isocyanate compounds, higher heat resistance of the cured product can be easily obtained.
- the total amount of isocyanate groups of the component (C) and the component (D) in the present invention is preferably 0.8 equivalents or more and 1.8 equivalents or less with respect to the amount of hydroxyl groups of the component (A). More preferably, it is 1.0 equivalent or more and 1.7 equivalent or less.
- the viscosity of the resin thickener is likely to be improved, which is preferable.
- the amount is 1.8 equivalents or less, higher heat resistance is exhibited by the cured product of the obtained epoxy resin composition, which is preferable.
- the epoxy resin composition of the present invention preferably further contains the following component (E).
- component (E) examples include quaternary ammonium salts such as tetramethylammonium chloride, tetramethylammonium bromide, tetramethylammonium iodide, and tetrabutylammonium bromide, allyltriphenylphosphonium bromide, diallyldiphenylphosphonium bromide, and ethyltriphenyl.
- quaternary ammonium salts such as tetramethylammonium chloride, tetramethylammonium bromide, tetramethylammonium iodide, and tetrabutylammonium bromide, allyltriphenylphosphonium bromide, diallyldiphenylphosphonium bromide, and ethyltriphenyl.
- Phosphonium salts such as phosphonium chloride, ethyltriphenylphosphonium iodide, tetrabutylphosphonium acetate, tetrabutylphosphonium chloride, tetrabutylphosphonium bromide, tetrabutylphosphonium iodide, imidazole compounds such as 2-phenylimidazole and 2-methylimidazole, tri Examples thereof include phosphine compounds such as phenylphosphine.
- these components (E) can be used individually by 1 type or in combination of 2 or more types.
- the quaternary ammonium salt and / or the phosphine compound is preferable as the component (E) because the curing time can be significantly shortened.
- the component (E) in the present invention preferably contains 1 part by mass or more and 15 parts by mass or less with respect to 100 parts by mass of the component (A).
- the component (E) is 1 part by mass or more with respect to 100 parts by mass of the component (A)
- a sufficient effect of improving the curability can be obtained, which is preferable, and when the component (E) is 15 parts by mass or less, the heat resistance is lowered. It is preferable because a sufficient effect of improving curability can be obtained without inviting.
- the epoxy resin composition of the present invention preferably has a viscosity at 30 ° C. of 0.01 Pa ⁇ s or more and 5 Pa ⁇ s or less, as measured by an E-type viscometer immediately after preparation, preferably 0.01 Pa ⁇ s or more and 2 Pa ⁇ s or less. Is more preferable.
- the viscosity at 30 ° C. is 5 Pa ⁇ s or less, the impregnation property of the reinforcing fibers is likely to be excellent. Further, when the viscosity at 30 ° C.
- the viscosity at the time of resin impregnation does not become too low, the resin does not easily flow out to the outside, and the reinforcing fibers are easily uniformly impregnated.
- Immediately after preparation refers to the time when each component is mixed and stirred for 1 minute.
- the viscosity immediately after preparation means that each component is mixed and the viscosity of the epoxy resin composition after stirring for 1 minute is measured.
- the epoxy resin composition of the present invention preferably has a reaction start temperature of 5 ° C. or higher and 80 ° C. or lower, and more preferably 10 ° C. or higher and 60 ° C. or lower, and 20 ° C. or higher and 50 ° C. or lower.
- the reaction start temperature is 5 ° C. or higher, it becomes easy to suppress rapid thickening immediately after preparation. Further, when the temperature is 80 ° C. or lower, it becomes easy to suppress a secondary reaction due to a high temperature, and more excellent formability is exhibited.
- the reaction start temperature is measured immediately after preparation by a method described later using a differential calorimeter.
- the viscosity of the resin thickener obtained by holding at 40 ° C. for 24 hours is preferably 100 Pa ⁇ s or more and 30,000 Pa ⁇ s or less, and 100 Pa ⁇ s or more and 10000 Pa ⁇ s. It is more preferably 100 Pa ⁇ s or more, and further preferably 5000 Pa ⁇ s or less.
- the viscosity of the resin thickener at 30 ° C. is 100 Pa ⁇ s or more, it becomes easy to suppress the resin dripping when the molding material using the epoxy resin composition is used. Further, if it is 30,000 Pa ⁇ s or less, the molding material using the epoxy resin composition can be easily shaped without breaking even at a low temperature.
- the epoxy resin composition according to the present invention preferably has a viscosity of the resin thickener at 130 ° C. of 1 Pa ⁇ s or more and 100 Pa ⁇ s or less, and more preferably 5 Pa ⁇ s or more and 100 Pa ⁇ s or less. If the viscosity of the resin thickened product at 130 ° C. is 1 Pa ⁇ s or more, a resin-rich portion is unlikely to be formed when a molding material using the epoxy resin composition is press-molded. Further, if it is 100 Pa ⁇ s or less, when the molding material using the epoxy resin composition is press-molded, even if it has a complicated shape, the base material can be molded without filling up to the end.
- the heat resistance of the fiber-reinforced composite material obtained by using the epoxy resin composition of the present invention depends on the glass transition temperature of the cured resin product obtained by curing the epoxy resin composition.
- the glass transition temperature of a cured resin product obtained by heating at a temperature of 140 ° C. for 2 hours and completely curing is in the range of 120 ° C. or higher and 250 ° C. or lower. It is preferable, and more preferably 130 ° C. or higher and 220 ° C. or lower.
- the glass transition temperature is 120 ° C. or higher, high heat resistance is imparted to the cured resin product obtained by curing the epoxy resin composition.
- the glass transition temperature is 250 ° C.
- the crosslink density of the three-dimensional crosslinked structure of the cured resin obtained by curing the epoxy resin composition does not become too high, and high mechanical properties are exhibited.
- the glass transition temperature of the epoxy resin cured product obtained by curing the epoxy resin composition is determined by measurement using a dynamic viscoelasticity measuring device (DMA). That is, using a rectangular test piece cut out from a resin cured plate, DMA measurement is performed under temperature rise, and the temperature of the inflection point of the obtained storage elastic modulus G'is defined as Tg.
- DMA dynamic viscoelasticity measuring device
- the mechanical properties of the fiber-reinforced composite material using the epoxy resin composition according to the present invention depend on the mechanical properties of the cured resin product obtained by curing the epoxy resin composition.
- the bending strength of the cured resin product obtained by heating at a temperature of 140 ° C. for 2 hours and completely curing is 110 MPa or more, more preferably 120 MPa or more. Is preferable. If the bending strength of the cured resin product is 110 MPa or more, the fiber-reinforced composite material using the epoxy resin composition of the present invention will not be broken or deformed even in an environment where strong stress is applied from the outside. It can be used as an excellent member.
- the molding material for a fiber-reinforced composite material of the present invention includes the epoxy resin composition of the present invention and the reinforcing fiber.
- the molding material for a fiber-reinforced composite material of the present invention preferably comprises the epoxy resin of the present invention and the reinforcing fiber.
- the molding material for the fiber-reinforced composite material of the present invention is not particularly limited in the type and length of the reinforcing fiber, the content ratio of the reinforcing fiber and the resin, and the like.
- the reinforcing fibers for example, fiber structures such as long fibers aligned in one direction, a single tow, a woven fabric, a knit, and a braid are exemplified. Those having an average fiber diameter of 3 ⁇ m or more and 12 ⁇ m or less and a reinforcing fiber mass fraction in the range of 40% or less and 90% or less are preferably used.
- the reinforcing fiber mass fraction is 40% or more, the mass of the obtained fiber-reinforced composite material is not excessive, and the advantages of the fiber-reinforced composite material having excellent specific strength and specific elastic modulus can be fully exhibited.
- the impregnation property of the epoxy resin composition into the reinforcing fibers tends to be excellent.
- the fiber-reinforced composite material obtained by using such continuous fibers include prepregs and towpregs.
- discontinuous fibers are used as the form of the reinforcing fibers
- fiber structures such as non-woven fabrics and mats are exemplified
- the fiber length of the reinforcing fibers is 5 mm or more and 100 mm or less
- the average fiber diameter is 3 ⁇ m or more and 12 ⁇ m or less
- the reinforcing fibers are preferably used.
- the reinforcing fiber mass fraction is 40% or more, the mass of the obtained fiber-reinforced composite material is not excessive, and the advantages of the fiber-reinforced composite material having excellent specific strength and specific elastic modulus can be fully exhibited.
- the impregnation property of the epoxy resin composition into the reinforcing fibers tends to be excellent.
- molding materials for fiber-reinforced composite materials obtained by using such discontinuous fibers include BMC and SMC. Of these, SMC is particularly preferably used from the viewpoint of productivity and the degree of freedom in the shape of the molded product.
- the form of the bundled aggregate of such discontinuous fibers is not particularly limited, and various techniques can be applied.
- the bundle-shaped aggregate has both ends of the reinforcing fibers in the bundle-shaped aggregate with respect to the arrangement direction of the reinforcing fibers on the surface where the width in the direction perpendicular to the arrangement direction of the reinforcing fibers is maximized. Assuming that the angles of the acute angles taken by the sides formed by the arrangement of are angles a and b, respectively, it is preferable that each of the angles a and b is 2 ° or more and 30 ° or less.
- the effect of improving the surface quality and strength is great.
- the angle a and the angle b are 30 ° or less, the effect is remarkable.
- the smaller the angle a and the angle b the lower the handleability of the bundled aggregate itself.
- the smaller the angle between the arrangement direction of the reinforcing fibers and the cutting blade the lower the stability in the cutting process.
- the angle a and the angle b are preferably 2 ° or more.
- the angle a and the angle b are more preferably 3 ° or more and 25 ° or less.
- the angles a and b are more preferably 5 ° or more and 15 ° or less in view of the balance between the surface quality and strength improving effect of the fiber-reinforced composite material and the processability in the manufacturing process of the bundled aggregate.
- a means for cutting a continuous reinforcing fiber bundle for producing a bundled aggregate of discontinuous reinforcing fibers for example, there is a rotary cutter such as a guillotine cutter or a roving cutter.
- the continuous reinforcing fiber bundle is inserted into the cutting means and cut in a state where the longitudinal direction of the continuous reinforcing fiber bundle and the direction of the cutting blade equipped in the cutting means are relatively oblique.
- the method for producing the molding material for the fiber-reinforced composite material of the present invention is not particularly limited, but for example, the reinforcing fiber is impregnated with the epoxy resin composition of the present invention by a method suitable for the form of the reinforcing fiber. After that, by holding the resin composition at a temperature of about room temperature to about 80 ° C. for several hours to several days to bring it into a semi-cured state in which the increase in viscosity of the resin composition is saturated, the molding material for the fiber reinforced composite material of the present invention can be obtained. Can be done.
- the semi-cured state in which the increase in viscosity of the resin composition is saturated is referred to as a resin thickener.
- the epoxy resin composition is held at 40 ° C. for 24 hours to saturate the increase in viscosity of the resin composition and bring it into a semi-cured state.
- the reinforcing fiber is not particularly limited, and examples thereof include glass fiber, carbon fiber, graphite fiber, aramid fiber, boron fiber, alumina fiber and silicon carbide fiber. Two or more kinds of these reinforcing fibers may be mixed and used. It is preferable that the reinforcing fibers are carbon fibers or graphite fibers from the viewpoint that a molded product having a lighter weight and higher durability can be easily obtained. In particular, it is preferable that the reinforcing fiber is carbon fiber from the viewpoint that excellent specific elastic modulus and specific strength can be easily obtained even in applications where there is a high demand for weight reduction and high strength of the material.
- any kind of carbon fiber can be used depending on the application, but from the viewpoint of impact resistance, a carbon fiber having a tensile elastic modulus of at most 400 GPa is preferable. Further, from the viewpoint of strength, since it is easy to obtain a composite material having high rigidity and mechanical strength, it is preferable that the carbon fiber has a tensile strength of 4.4 GPa or more and 6.5 GPa or less. Further, it is preferable that the carbon fiber has a tensile elongation of 1.7% or more and 2.3% or less. Therefore, carbon fibers having the characteristics of a tensile elastic modulus of at least 230 GPa, a tensile strength of at least 4.4 GPa, and a tensile elongation of at least 1.7% are most suitable.
- a press molding method for a molding material for a fiber-reinforced composite material such as a compound (SMC) is preferably used.
- the fiber-reinforced composite material of the present invention is obtained by curing the molding material for the fiber-reinforced composite material of the present invention.
- a fiber-reinforced composite material particularly in the case of a fiber-reinforced composite material used in the fields of aircraft and automobiles, mechanical properties such as high heat resistance and bending strength are required.
- the fiber-reinforced composite material of the present invention has heat resistance because the glass transition temperature of the epoxy resin cured product, which is a matrix resin, can usually be 120 ° C. or higher and 250 ° C. or lower, and the bending strength of the epoxy resin cured product can be 110 MPa or higher. And excellent mechanical properties.
- the molding material for a fiber-reinforced composite material of the present invention exhibits excellent fluidity regardless of the molding temperature without the resin alone flowing in advance during press molding, and the homogeneity of the fiber and the resin is very high. High fiber reinforced composites are obtained.
- the method for producing the fiber-reinforced composite material of the present invention is not particularly limited, but is limited to a hand lay-up method, a filament winding method, a pull-fusion method, a resin transfer molding (RTM) method, a prepreg autoclave molding method, and the like. Further, a press molding method for a molding material for a fiber-reinforced composite material such as a prepreg, a tow preg, a bulk molding compound (BMC), and a sheet molding compound (SMC) is preferably used.
- epoxy resin composition of the present invention the molding material for the fiber-reinforced composite material, and the fiber-reinforced composite material will be described in more detail by way of examples.
- Component (E) At least one compound selected from the group consisting of a quaternary ammonium salt, a phosphonium salt, an imidazole compound, and a phosphine compound-Tetrabutylammonium bromide (manufactured by Tokyo Chemical Industry Co., Ltd.) -Tetraphenylphosphonium bromide (manufactured by Tokyo Chemical Industry Co., Ltd.).
- an aluminum mold having a total length of 300 mm, a total height of 40 mm, a top surface width of 40 mm, a flange width of 22 mm, and a radius of curvature of 15 mm was used as the hat shape.
- Tg of cured resin A test piece having a width of 12.7 mm and a length of 40 mm was cut out from the cured resin product, and Tg measurement was performed using DMA (ARES manufactured by TA Instruments). The measurement conditions are a heating rate of 5 ° C./min. The temperature at the inflection point of the storage elastic modulus G'obtained by the measurement was defined as Tg.
- ⁇ Measurement of bending strength of cured resin The bending strength of the cured resin product obtained as described above was measured according to JIS K7074: 1988.
- the test piece cut out to have a width of 15 mm and a length of 100 mm was measured by a three-point bending test using an Instron universal testing machine (manufactured by Instron).
- the bending strength was measured by measuring at a crosshead speed of 5 mm / min, a span of 80 mm, a thickness diameter of 5 mm, and a fulcrum diameter of 2 mm.
- the converted values measured for five samples were calculated, and the average thereof was obtained as the bending strength.
- ⁇ Making SMC> As the carbon fiber, "Trading Card (registered trademark)" T700S-12K (manufactured by Toray Industries, Inc.) was used. By cutting the continuous carbon fiber strands at a desired angle and spraying them so as to uniformly disperse the bundled aggregates of carbon fibers, a discontinuous carbon fiber non-woven fabric having an isotropic fiber orientation was obtained. A rotary cutter was used as the cutting device. The distance between the blades was 30 mm. The basis weight of the discontinuous carbon fiber non-woven fabric was 1 kg / m 2 .
- the discontinuous carbon fiber non-woven fabric is sandwiched between polyethylene films coated with the epoxy resin composition so that the carbon fiber weight content of the obtained SMC is 50%, pressed with a roller, and impregnated with the epoxy resin composition.
- a sheet-shaped SMC precursor was obtained.
- the SMC precursor was held at 40 ° C. for 24 hours to thicken the resin to obtain SMC.
- an aluminum mold having a total length of 300 mm, a total height of 40 mm, a top surface width of 40 mm, a flange width of 22 mm, and a radius of curvature of 15 mm was used as the hat shape.
- Examples 1 to 18 With the types and contents (parts by mass) of each component shown in Table 1, a resin composition was prepared according to the above preparation of the resin composition, and the reaction start temperature and the viscosity at 30 ° C. were measured. Further, each epoxy resin composition was held at 40 ° C. for 24 hours to thicken it, and then the viscosities at 30 ° C. and 130 ° C. were measured, respectively, and the formability was measured under the condition of 10 ° C. Further, a cured resin product and SMC of the epoxy resin composition were prepared using the epoxy resin composition before thickening. The reaction start temperature of the epoxy resin composition immediately after preparation was 80 ° C. or lower, and the viscosity at 30 ° C.
- the viscosity at 30 ° C. after thickening is 100 Pa ⁇ s or more
- the viscosity at 130 ° C. is 1 Pa ⁇ s or more and 100 Pa ⁇ s or less
- the shapeability under 10 ° C. conditions is B or more
- the temperature is low. It was excellent in formability under the conditions.
- the Tg of the cured resin product obtained by curing the epoxy resin composition was 120 ° C. or higher, and the bending strength was 110 MPa or higher.
- the formability of SMC using such an epoxy resin composition under 10 ° C. conditions was B or higher.
- a resin composition, a cured resin composition of an epoxy resin composition, and SMC were prepared in the same manner as in Examples 1 to 18 except for the types and contents (parts by mass) of each component shown in Table 2, and various measurements were made.
- the reaction start temperature of the epoxy resin composition immediately after preparation was as poor as 100 ° C., and the viscosity at 30 ° C. was 5.0 Pa ⁇ s or less.
- the viscosity at 30 ° C. after thickening was good at 120 Pa ⁇ s, but the viscosity at 130 ° C. was poor at 0.3 Pa ⁇ s, and the formability under 10 ° C. conditions was C.
- the shapeability under low temperature conditions was poor.
- the Tg of the cured resin product obtained by curing the epoxy resin composition was poor at 115 ° C., and the bending strength was 108 MPa, which was inferior in mechanical properties.
- the formability of SMC using such an epoxy resin composition under 10 ° C. conditions was C.
- the Tg of the cured resin product obtained by curing the epoxy resin composition was poor at 110 ° C., and the bending strength was 107 MPa, which was inferior in mechanical properties.
- the formability of SMC using such an epoxy resin composition under 10 ° C. conditions was C.
- the Tg of the cured resin product obtained by curing the epoxy resin composition was poor at 106 ° C., and the bending strength was 80 MPa, which was inferior in mechanical properties.
- the formability of SMC using such an epoxy resin composition under 10 ° C. conditions was C.
- the Tg of the cured resin product obtained by curing the epoxy resin composition was poor at 80 ° C., and the bending strength was 87 MPa, which was inferior in mechanical properties.
- the formability of SMC using such an epoxy resin composition under 10 ° C. conditions was C.
- the Tg of the cured resin product obtained by curing the epoxy resin composition was poor at 117 ° C., and the bending strength was 109 MPa, which was inferior in mechanical properties.
- the formability of SMC using such an epoxy resin composition under 10 ° C. conditions was C.
- a resin composition, a cured resin composition of an epoxy resin composition, and SMC were prepared in the same manner as in Examples 1 to 18 except for the types and contents (parts by mass) of each component shown in Table 2, and various measurements were made.
- the reaction start temperature of the epoxy resin composition immediately after preparation was as poor as 100 ° C., and the viscosity at 30 ° C. was 5.0 Pa ⁇ s or less.
- the viscosity at 30 ° C. after thickening is 80 Pa ⁇ s
- the viscosity at 130 ° C. is poor at 0.1 Pa ⁇ s
- the formability under 10 ° C. is C, and under low temperature conditions.
- the shapeability was poor.
- the Tg of the cured resin product obtained by curing the epoxy resin composition was poor at 108 ° C., and the bending strength was 100 MPa, which was inferior in mechanical properties.
- the formability of SMC using such an epoxy resin composition under 10 ° C. conditions was C.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Epoxy Resins (AREA)
- Reinforced Plastic Materials (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
以下の成分(A)~(D)を全て含み、エポキシ樹脂組成物の総質量100質量%中の成分(A)の含有量が30質量%以上95質量%以下であり、成分(C)の含有量Wcと成分(D)の含有量Wdとの比率Wc/Wdが0.01以上10以下であるエポキシ樹脂組成物。
成分(A):エポキシ樹脂
成分(B):硬化剤
成分(C):連続する二重結合、脂環式構造または複素環構造を有するジイソシアネート化合物
成分(D):成分(C)を除く、ポリイソシアネート化合物
成分(A):エポキシ樹脂
成分(B):硬化剤
成分(C):連続する二重結合、脂環式構造または複素環構造を有するジイソシアネート化合物
成分(D):成分(C)を除く、ポリイソシアネート化合物。
成分(E):4級アンモニウム塩、ホスホニウム塩、イミダゾール化合物、およびホスフィン化合物からなる群より選ばれる少なくとも1つの化合物。
本発明にかかるエポキシ樹脂組成物を用いた繊維強化複合材料の製造方法としては、特に限定されるものではないが、ハンドレイアップ法、フィラメントワインディング法、プルトルージョン法、レジントランスファーモールディング(RTM)法、プリプレグのオートクレーブ成形法、さらには、プリプレグやトウプレグ、バルクモールディングコンパウンド(BMC)、シートモールディングコンパウンド(SMC)等の繊維強化複合材料用成形材料のプレス成形法が好適に用いられる。
各実施例、比較例のエポキシ樹脂組成物を得るために、以下の樹脂原料を用いた。なお、表中のエポキシ樹脂組成物の欄における各成分の数値は含有量を示し、その単位(「部」)は、特に断らない限り「質量部」である。
・“エポトート(登録商標)”YD128(新日鉄住金化学(株)製):液状ビスフェノールA型エポキシ樹脂(水酸基当量:1250g/mol)
・“jER(登録商標)”154(三菱ケミカル(株)製):フェノールノボラック型エポキシ樹脂(水酸基なし)
・“jER(登録商標)”1001(三菱ケミカル(株)製):固形ビスフェノールA型エポキシ樹脂(水酸基当量:313g/mol)
・SR-DGE(阪本薬品工業(株)製):ジグリセロール型エポキシ(水酸基当量:435g/mol)
・“デナコール(登録商標)”EX-614(ナガセケムテックス(株)製):ソルビトール型エポキシ樹脂(水酸基当量:229g/mol)。
・“jERキュア(登録商標)”DICY7(三菱ケミカル(株)製):ジシアンジアミド 。
・“デスモジュール(登録商標)”N3400(住化コベストロウレタン(株)製):HDIウレトジオン
・“デスモジュール(登録商標)”I(住化コベストロウレタン(株)製):イソホロンジイソシアネート
・“デスモジュール(登録商標)”W(住化コベストロウレタン(株)製):ジシクロヘキシルメタン-4,4’- ジイソシアネート
・“ルプラネート(登録商標)”MM-103(BASF INOAC ポリウレタン(株)製):カルボジイミド変性MDI。
・“スミジュール(登録商標)”N3300(住化コベストロウレタン(株)製):HDIイソシアネート
・“ルプラネート(登録商標)”M20S(BASF INOAC ポリウレタン(株)製):ポリメリックMDI(ポリメチレンポリフェニルポリイソシアネート)
・“ルプラネート(登録商標)”MI(BASF INOAC ポリウレタン(株)製):モノメリックMDI(ジフェニルメタンジイソシアネート)
・“ルプラネート(登録商標)”MP102(BASF INOAC ポリウレタン(株)製):ウレタン変性MDI
・“コロネート(登録商標)”T-100(東ソー(株)製):TDI。
・テトラブチルアンモニウムブロミド(東京化成工業(株)製)
・テトラフェニルホスホニウムブロミド (東京化成工業(株)製)。
表に記載した含有量(質量部)で各成分を混合し、エポキシ樹脂組成物を調製した。
測定すべき検体を、JIS Z8803(1991)における「円すい-平板形回転粘度計による粘度測定方法」に従い、標準コーンローター(1°34’×R24)を装着したE型粘度計を使用して、30℃に保持した状態で測定した。E型粘度計としては、(株)トキメック製TVE-30Hを用いた。なお、検体としては、調製直後のエポキシ樹脂組成物を用いた。
測定すべき検体を用い、TA社製示差式熱量計DSC25を使用し、20℃から130℃の温度領域において、10℃間隔で温度を変更し、各温度で一定に保持した際のエポキシ樹脂組成物の発熱量の変化を測定した。得られた発熱曲線において、発熱量が最大となる時間が5分以内となった温度のうち、最も低い温度を反応開始温度とした。
測定すべき検体を、ハット形状の金型に手で賦形した後、5分間放置した。この際に、5分より長時間金型から剥離なく形態を維持した状態のものを「A」、1分以上5分以下金型から剥離なく形態を維持した状態のものを「B」、金型から剥離なく1分未満形態を保持したもの、あるいは検体が破断したもの、あるいは検体の形状が保持できなかったものを「C」とした。ここでハット形状は全長300mm、全高40mm、天面幅40mm、フランジ幅22mm、曲率部半径15mmのアルミ製金型を用いた。
測定すべき検体を、DMA(TAインスツルメンツ社製ARES)を使用して、30℃に加熱したステージにサンプルを投入し、10℃/分で昇温し、粘度を測定した。なお、検体としては、各成分を混合したエポキシ樹脂組成物を40℃で24時間保持したものを用いた。例えば、30℃の粘度は検体が30℃に達した際の粘度であり、同様にして各温度における粘度を測定した。
上記<エポキシ樹脂組成物の調製>で調製したエポキシ樹脂組成物を真空中で脱泡した後、2mm厚の“テフロン(登録商標)”製スペーサーにより厚み2mmになるように設定したモールド中に注入した。140℃の温度で2時間硬化させ、厚さ2mmの樹脂硬化物を得た。
樹脂硬化物から幅12.7mm、長さ40mmの試験片を切り出し、DMA(TAインスツルメンツ社製ARES)を用いてTg測定を行った。測定条件は、昇温速度5℃/分である。測定で得られた貯蔵弾性率G’の変曲点での温度をTgとした。
前記のようにして得られた樹脂硬化物の曲げ強度を、JIS K7074:1988に従って測定した。幅15mm、長さ100mmとなるように切り出した試験片を、インストロン万能試験機(インストロン社製)を用い、3点曲げ試験により測定した。クロスヘッド速度5mm/分、スパン80mm、厚子径5mm、支点径2mmで測定を行い、曲げ強度を測定した。曲げ強度は、5個の試料について測定した換算値を算出して、その平均を曲げ強度として求めた。
炭素繊維として、“トレカ(登録商標)”T700S-12K(東レ(株)製)を使用した。前記連続炭素繊維ストランドを所望の角度で切断して炭素繊維の束状集合体を均一分散するように散布することにより、繊維配向が等方的である不連続炭素繊維不織布を得た。切断装置にはロータリー式カッターを用いた。刃の間隔は30mmとした。また、不連続炭素繊維不織布の目付は1kg/m2であった。不連続炭素繊維不織布を、得られるSMCの炭素繊維重量含有率が50%となるように、上記エポキシ樹脂組成物が塗布されたポリエチレンフィルムで挟み込み、ローラーで押圧し、上記エポキシ樹脂組成物を含浸させることによりシート状のSMC前駆体を得た。このSMC前駆体を40℃で24時間保持し、樹脂を増粘させることで、SMCを得た。
測定すべき検体を、ハット形状の金型に手で賦形した後、5分間放置した。この際に、5分より長時間金型から剥離なく形態を維持した状態のものを「A」、1分以上5分以下金型から剥離なく形態を維持した状態のものを「B」、金型から剥離なく1分未満形態を保持したもの、あるいは検体が破断したもの、あるいは検体の形状が保持できなかったものを「C」とした。ここでハット形状は全長300mm、全高40mm、天面幅40mm、フランジ幅22mm、曲率部半径15mmのアルミ製金型を用いた。
表1に記載した各成分の種類及び含有量(質量部)で、上記した樹脂組成物の調製にしたがって樹脂組成物を作製し、反応開始温度および30℃における粘度を測定した。また、それぞれのエポキシ樹脂組成物を40℃で24時間保持し増粘させた後、30℃および130℃における粘度をそれぞれ測定し、10℃条件下にて賦形性を測定した。さらに増粘前のエポキシ樹脂組成物を用いて、エポキシ樹脂組成物の樹脂硬化物およびSMCを作製した。調製直後のエポキシ樹脂組成物の反応開始温度は80℃以下であり、30℃における粘度は5.0Pa・s以下であった。また、増粘後の30℃における粘度は100Pa・s以上であり、130℃における粘度は1Pa・s以上100Pa・s以下であり、10℃条件下での賦形性はB以上であり、低温条件下での賦形性に優れるものであった。さらに、かかるエポキシ樹脂組成物を硬化してなる樹脂硬化物のTgは120℃以上、曲げ強度は110MPa以上であった。また、かかるエポキシ樹脂組成物を用いたSMCの10℃条件下での賦形性はB以上であった。
表2に記載した各成分の種類及び含有量(質量部)とする以外は、実施例1~18と同様にして樹脂組成物、エポキシ樹脂組成物の樹脂硬化物およびSMCを作製し、各種測定を行った。調製直後のエポキシ樹脂組成物の反応開始温度は100℃と不良であり、30℃における粘度は5.0Pa・s以下であった。しかし、増粘後の30℃における粘度は120Pa・sと良好であったが、130℃における粘度は0.3Pa・sと不良であり、10℃条件下での賦形性はCであり、低温条件下での賦形性が不良であった。さらに、かかるエポキシ樹脂組成物を硬化してなる樹脂硬化物のTgが115℃と不良であり、曲げ強度は108MPaと力学特性に劣るものであった。また、かかるエポキシ樹脂組成物を用いたSMCの10℃条件下での賦形性はCであった。
表2に記載した各成分の種類及び含有量(質量部)とする以外は、実施例1~18と同様にして樹脂組成物、エポキシ樹脂組成物の樹脂硬化物およびSMCを作製し、各種測定を行った。調製直後のエポキシ樹脂組成物の反応開始温度は90℃と不良であり、30℃における粘度は5.0Pa・s以下であった。しかし、増粘後の30℃における粘度は1590Pa・sと良好であったが、130℃における粘度は0.7Pa・sと不良であり、10℃条件下での賦形性はCであり、低温条件下での賦形性が不良であった。さらに、かかるエポキシ樹脂組成物を硬化してなる樹脂硬化物のTgが110℃と不良であり、曲げ強度は107MPaと力学特性に劣るものであった。また、かかるエポキシ樹脂組成物を用いたSMCの10℃条件下での賦形性はCであった。
表2に記載した各成分の種類及び含有量(質量部)とする以外は、実施例1~18と同様にして樹脂組成物、エポキシ樹脂組成物の樹脂硬化物およびSMCを作製し、各種測定を行った。調製直後のエポキシ樹脂組成物の反応開始温度は90℃と不良であり、30℃における粘度は5.0Pa・s以下であった。しかし、増粘後の30℃における粘度は0.4Pa・s、130℃における粘度は0.02Pa・sとともに不良であり、10℃条件下での賦形性はCであり、低温条件下での賦形性が不良であった。さらに、かかるエポキシ樹脂組成物を硬化してなる樹脂硬化物のTgが106℃と不良であり、曲げ強度は80MPaと力学特性に劣るものであった。また、かかるエポキシ樹脂組成物を用いたSMCの10℃条件下での賦形性はCであった。
表2に記載した各成分の種類及び含有量(質量部)とする以外は、実施例1~18と同様にして樹脂組成物、エポキシ樹脂組成物の樹脂硬化物およびSMCを作製し、各種測定を行った。調製直後のエポキシ樹脂組成物の反応開始温度は130℃と不良であり、30℃における粘度は5.0Pa・s以上と不良であった。加えて、増粘後の30℃における粘度は2Pa・s、130℃における粘度は0.01Pa・sとともに不良であり、10℃条件下での賦形性はCであり、低温条件下での賦形性が不良であった。さらに、かかるエポキシ樹脂組成物を硬化してなる樹脂硬化物のTgが80℃と不良であり、曲げ強度は87MPaと力学特性に劣るものであった。また、かかるエポキシ樹脂組成物を用いたSMCの10℃条件下での賦形性はCであった。
表2に記載した各成分の種類及び含有量(質量部)とする以外は、実施例1~18と同様にして樹脂組成物、エポキシ樹脂組成物の樹脂硬化物およびSMCを作製し、各種測定を行った。調製直後のエポキシ樹脂組成物の反応開始温度は80℃と良好であり、30℃における粘度は5.0Pa・s以下であった。加えて、増粘後の30℃における粘度は140Pa・sと良好であったが、130℃における粘度は0.4Pa・sとともに不良であり、10℃条件下での賦形性はCであり、低温条件下での賦形性が不良であった。さらに、かかるエポキシ樹脂組成物を硬化してなる樹脂硬化物のTgが117℃と不良であり、曲げ強度は109MPaと力学特性に劣るものであった。また、かかるエポキシ樹脂組成物を用いたSMCの10℃条件下での賦形性はCであった。
表2に記載した各成分の種類及び含有量(質量部)とする以外は、実施例1~18と同様にして樹脂組成物、エポキシ樹脂組成物の樹脂硬化物およびSMCを作製し、各種測定を行った。調製直後のエポキシ樹脂組成物の反応開始温度は100℃と不良であり、30℃における粘度は5.0Pa・s以下であった。加えて、増粘後の30℃における粘度は80Pa・s、130℃における粘度は0.1Pa・sとともに不良であり、10℃条件下での賦形性はCであり、低温条件下での賦形性が不良であった。さらに、かかるエポキシ樹脂組成物を硬化してなる樹脂硬化物のTgが108℃と不良であり、曲げ強度は100MPaと力学特性に劣るものであった。また、かかるエポキシ樹脂組成物を用いたSMCの10℃条件下での賦形性はCであった。
Claims (14)
- 以下の成分(A)~(D)を全て含み、エポキシ樹脂組成物の総質量100質量%中の成分(A)の含有量が30質量%以上95質量%以下であり、成分(C)の含有量Wcと成分(D)の含有量Wdとの比率Wc/Wdが0.01以上10以下であるエポキシ樹脂組成物。
成分(A):エポキシ樹脂
成分(B):硬化剤
成分(C):連続する二重結合、脂環式構造または複素環構造を有するジイソシアネート化合物
成分(D):成分(C)を除く、ポリイソシアネート化合物 - 成分(C)の30℃における粘度が10mPa・s以上1000mPa・s以下である、請求項1に記載のエポキシ樹脂組成物。
- 成分(C)が分子中に以下の化学構造を有する、請求項1または2に記載のエポキシ樹脂組成物。
C=C=C または N=C=N - 成分(C)が直鎖構造である、請求項1~3のいずれかに記載のエポキシ樹脂組成物。
- 成分(D)が、1分子中にイソシアネート基を3個以上10個以下有するポリイソシアネート化合物である、請求項1~4に記載のエポキシ樹脂組成物。
- 成分(C)と成分(D)のいずれもが芳香族イソシアネート化合物である、請求項1~5のいずれかに記載のエポキシ樹脂組成物。
- さらに以下の成分(E)を含む、請求項1~6のいずれかに記載のエポキシ樹脂組成物。
成分(E):4級アンモニウム塩、ホスホニウム塩、イミダゾール化合物、およびホスフィン化合物からなる群より選ばれる少なくとも1つの化合物 - 反応開始温度が5℃以上80℃以下である、請求項1~7に記載のエポキシ樹脂組成物。
- 40℃で24時間保持して得られる樹脂増粘物の30℃における粘度が、100Pa・s以上30000Pa・s以下であり、かつ前記樹脂増粘物の130℃における粘度が、1Pa・s以上100Pa・s以下である、請求項1~8のいずれかに記載のエポキシ樹脂組成物。
- 成分(A)が30℃で液状の水酸基含有エポキシ樹脂である、請求項1~9のいずれかに記載のエポキシ樹脂組成物。
- 成分(B)がジシアンジアミドまたはその誘導体である、請求項1~10のいずれかに記載のエポキシ樹脂組成物。
- 請求項1~11のいずれかに記載のエポキシ樹脂組成物、および強化繊維を含む、繊維強化複合材料用成形材料。
- 前記強化繊維が炭素繊維である、請求項12に記載の繊維強化複合材料用成形材料。
- 請求項12または13に記載の繊維強化複合材料用成形材料が硬化されてなる繊維強化複合材料。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20897004.6A EP4071192B1 (en) | 2019-12-04 | 2020-12-02 | Epoxy resin composition, molding material for fiber-reinforced composite material, and fiber-reinforced composite material |
| JP2020567631A JP7596789B2 (ja) | 2019-12-04 | 2020-12-02 | エポキシ樹脂組成物、繊維強化複合材料用成形材料および繊維強化複合材料 |
| ES20897004T ES2989637T3 (es) | 2019-12-04 | 2020-12-02 | Composición de resina epoxídica, material de moldeo para material compuesto reforzado con fibra, y material compuesto reforzado con fibra |
| CN202080082512.0A CN114761457B (zh) | 2019-12-04 | 2020-12-02 | 环氧树脂组合物、纤维增强复合材料用成型材料及纤维增强复合材料 |
| US17/773,110 US12331153B2 (en) | 2019-12-04 | 2020-12-02 | Epoxy resin composition, molding material for fiber-reinforced composite material, and fiber-reinforced composite material |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-219271 | 2019-12-04 | ||
| JP2019219271 | 2019-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021112111A1 true WO2021112111A1 (ja) | 2021-06-10 |
Family
ID=76221636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2020/044789 Ceased WO2021112111A1 (ja) | 2019-12-04 | 2020-12-02 | エポキシ樹脂組成物、繊維強化複合材料用成形材料および繊維強化複合材料 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12331153B2 (ja) |
| EP (1) | EP4071192B1 (ja) |
| JP (1) | JP7596789B2 (ja) |
| CN (1) | CN114761457B (ja) |
| ES (1) | ES2989637T3 (ja) |
| WO (1) | WO2021112111A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022102467A1 (ja) * | 2020-11-16 | 2022-05-19 | 東レ株式会社 | 熱硬化性エポキシ樹脂組成物とその成形品、繊維強化複合材料、繊維強化複合材料用成形材料、および繊維強化複合材料の製造方法 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0578445A (ja) | 1991-09-25 | 1993-03-30 | Sumitomo Chem Co Ltd | エポキシ樹脂組成物 |
| JP2005247879A (ja) * | 2004-03-01 | 2005-09-15 | Showa Highpolymer Co Ltd | 繊維強化複合材料用組成物及びその成形材料 |
| JP2007138136A (ja) * | 2005-10-19 | 2007-06-07 | Yokohama Rubber Co Ltd:The | エポキシ樹脂/ポリウレタン混合物および硬化性樹脂組成物 |
| JP2010517848A (ja) | 2007-02-01 | 2010-05-27 | ドレクセル・ユニバーシティー | 反射面 |
| JP2015229763A (ja) * | 2014-06-06 | 2015-12-21 | パナソニックIpマネジメント株式会社 | 樹脂組成物、プリプレグ、金属張積層板、プリント配線板 |
| JP2017082128A (ja) | 2015-10-29 | 2017-05-18 | Dic株式会社 | 繊維強化複合材料用エポキシ樹脂組成物 |
| JP2019014797A (ja) * | 2017-07-05 | 2019-01-31 | パナソニックIpマネジメント株式会社 | 熱硬化性樹脂組成物及びそれを用いたフィルム |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5183697A (ja) * | 1975-01-20 | 1976-07-22 | Hitachi Ltd | |
| JP4962554B2 (ja) | 2009-11-27 | 2012-06-27 | オムロン株式会社 | 一液性エポキシ樹脂組成物及びその利用 |
| JP2011190295A (ja) | 2010-03-11 | 2011-09-29 | Omron Corp | ワックス被処理硬化剤の製造方法、及びその利用 |
| JP6539434B2 (ja) | 2014-09-09 | 2019-07-03 | 日鉄ケミカル&マテリアル株式会社 | イソシアヌレート−オキサゾリドン樹脂用原料組成物およびイソシアヌレート−オキサゾリドン樹脂 |
| JP6657605B2 (ja) * | 2015-06-11 | 2020-03-04 | 三菱ケミカル株式会社 | エポキシ樹脂組成物、成形品、プリプレグ、繊維強化複合材料および構造体 |
| EP3632952B1 (en) * | 2017-05-24 | 2022-02-16 | Toray Industries, Inc. | Epoxy resin composition for fiber-reinforced composite materials, and fiber-reinforced composite material |
| JP7003583B2 (ja) * | 2017-11-08 | 2022-01-20 | Dic株式会社 | 繊維強化成形材料及びそれを用いた成形品 |
-
2020
- 2020-12-02 ES ES20897004T patent/ES2989637T3/es active Active
- 2020-12-02 CN CN202080082512.0A patent/CN114761457B/zh active Active
- 2020-12-02 US US17/773,110 patent/US12331153B2/en active Active
- 2020-12-02 JP JP2020567631A patent/JP7596789B2/ja active Active
- 2020-12-02 EP EP20897004.6A patent/EP4071192B1/en active Active
- 2020-12-02 WO PCT/JP2020/044789 patent/WO2021112111A1/ja not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0578445A (ja) | 1991-09-25 | 1993-03-30 | Sumitomo Chem Co Ltd | エポキシ樹脂組成物 |
| JP2005247879A (ja) * | 2004-03-01 | 2005-09-15 | Showa Highpolymer Co Ltd | 繊維強化複合材料用組成物及びその成形材料 |
| JP2007138136A (ja) * | 2005-10-19 | 2007-06-07 | Yokohama Rubber Co Ltd:The | エポキシ樹脂/ポリウレタン混合物および硬化性樹脂組成物 |
| JP2010517848A (ja) | 2007-02-01 | 2010-05-27 | ドレクセル・ユニバーシティー | 反射面 |
| JP2015229763A (ja) * | 2014-06-06 | 2015-12-21 | パナソニックIpマネジメント株式会社 | 樹脂組成物、プリプレグ、金属張積層板、プリント配線板 |
| JP2017082128A (ja) | 2015-10-29 | 2017-05-18 | Dic株式会社 | 繊維強化複合材料用エポキシ樹脂組成物 |
| JP2019014797A (ja) * | 2017-07-05 | 2019-01-31 | パナソニックIpマネジメント株式会社 | 熱硬化性樹脂組成物及びそれを用いたフィルム |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4071192A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022102467A1 (ja) * | 2020-11-16 | 2022-05-19 | 東レ株式会社 | 熱硬化性エポキシ樹脂組成物とその成形品、繊維強化複合材料、繊維強化複合材料用成形材料、および繊維強化複合材料の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20240150517A1 (en) | 2024-05-09 |
| JPWO2021112111A1 (ja) | 2021-06-10 |
| CN114761457A (zh) | 2022-07-15 |
| EP4071192A1 (en) | 2022-10-12 |
| JP7596789B2 (ja) | 2024-12-10 |
| EP4071192B1 (en) | 2024-09-11 |
| US12331153B2 (en) | 2025-06-17 |
| EP4071192A4 (en) | 2023-12-20 |
| ES2989637T3 (es) | 2024-11-27 |
| CN114761457B (zh) | 2024-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6903897B2 (ja) | エポキシ樹脂組成物、並びにこれを用いた成形品、プリプレグ及び繊維強化プラスチック | |
| US20110111663A1 (en) | Epoxy resin composition and prepreg using the same | |
| US10400077B2 (en) | Reinforcing fiber fabric substrate, preform, and fiber-reinforced composite material | |
| WO2014030638A1 (ja) | エポキシ樹脂組成物、及びこれを用いたフィルム、プリプレグ、繊維強化プラスチック | |
| JP6439901B1 (ja) | 繊維強化複合材料用エポキシ樹脂組成物、および繊維強化複合材料 | |
| KR102551722B1 (ko) | 시트 몰딩 컴파운드, 프리프레그 및 섬유 강화 복합 재료 | |
| US11339243B2 (en) | Epoxy resin composition, molding material for fiber-reinforced composite material, and fiber-reinforced composite material | |
| WO2020100785A1 (ja) | 熱硬化性成形材料、繊維強化複合材料、繊維強化プラスチック用熱硬化性エポキシ樹脂組成物、熱硬化性成形材料の製造方法、繊維強化プラスチック | |
| JP7596789B2 (ja) | エポキシ樹脂組成物、繊維強化複合材料用成形材料および繊維強化複合材料 | |
| JP2021147550A (ja) | 成形材料および繊維強化複合材料 | |
| JP6447791B1 (ja) | シートモールディングコンパウンド、プリプレグおよび繊維強化複合材料 | |
| JP7775712B2 (ja) | 成形材料および繊維強化複合材料 | |
| JP2020122047A (ja) | エポキシ樹脂組成物、プリプレグ、及び繊維強化複合樹脂成形体 | |
| JP6737410B1 (ja) | シートモールディングコンパウンドおよび繊維強化複合材料 | |
| JP6835253B2 (ja) | シートモールディングコンパウンド、シートモールディングコンパウンドの製造方法、繊維強化複合材料、繊維強化複合材料の製造方法 | |
| JP2023065896A (ja) | シートモールディングコンパウンドおよび繊維強化複合材料 | |
| JP2024108262A (ja) | 熱硬化性樹脂組成物、繊維強化複合材料用成形材料および繊維強化複合材料 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENP | Entry into the national phase |
Ref document number: 2020567631 Country of ref document: JP Kind code of ref document: A |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20897004 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 17773110 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2020897004 Country of ref document: EP Effective date: 20220704 |
|
| WWG | Wipo information: grant in national office |
Ref document number: 17773110 Country of ref document: US |