WO2018190421A1 - 光硬化性樹脂組成物、それを用いた燃料電池およびシール方法 - Google Patents
光硬化性樹脂組成物、それを用いた燃料電池およびシール方法 Download PDFInfo
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- WO2018190421A1 WO2018190421A1 PCT/JP2018/015545 JP2018015545W WO2018190421A1 WO 2018190421 A1 WO2018190421 A1 WO 2018190421A1 JP 2018015545 W JP2018015545 W JP 2018015545W WO 2018190421 A1 WO2018190421 A1 WO 2018190421A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/04—Polymers provided for in subclasses C08C or C08F
- C08F290/042—Polymers of hydrocarbons as defined in group C08F10/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/04—Polymers provided for in subclasses C08C or C08F
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5435—Silicon-containing compounds containing oxygen containing oxygen in a ring
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
- C09K3/1018—Macromolecular compounds having one or more carbon-to-silicon linkages
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0286—Processes for forming seals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/33—Applications of adhesives in processes or use of adhesives in the form of films or foils for batteries or fuel cells
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/028—Sealing means characterised by their material
- H01M8/0284—Organic resins; Organic polymers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a photocurable resin composition that maintains adhesion to an electrolyte membrane even after being immersed in warm water.
- a fuel cell is a power generator that extracts electricity by chemically reacting hydrogen and oxygen.
- a fuel cell is a clean next-generation power generation device because it has high energy efficiency during power generation and water is generated by the reaction of hydrogen and oxygen.
- fuel cells There are four types of fuel cells: solid polymer fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells, and solid oxide fuel cells.
- solid polymer fuel cells have an operating temperature. Since it has a relatively low temperature (around 80 ° C.) and high power generation efficiency, it is expected to be used in applications such as a power source for automobiles, a household power generator, a small power source for electronic devices such as a mobile phone, and an emergency power source.
- the cell 1 of the polymer electrolyte fuel cell is an electrolyte membrane electrode assembly 5 (MEA) having a structure in which a polymer electrolyte membrane 4 is sandwiched between an air electrode 3a and a fuel electrode 3b. ), A frame 6 that supports the MEA, and a separator 2 in which a gas flow path is formed.
- MEA electrolyte membrane electrode assembly 5
- Patent Documents 5 and 6 disclose a photocurable sealant containing polyisobutylene diacrylate, a (meth) acryl monomer, and a photoinitiator.
- the photocurable resin composition disclosed in Patent Documents 5 and 6 contains polyisobutylene diacrylate as a main component in order to obtain sealing properties, the photocurability is insufficient.
- the photocurable resin compositions disclosed in Patent Documents 5 and 6 are mainly composed of polyisobutylene diacrylate having a low polarity in order to obtain a sealing property, but due to the structure, adhesion to various members. There was a problem of inferiority.
- the polymer electrolyte membrane of the fuel cell is a fluoropolymer, it is a material that is extremely difficult to bond with conventional sealing agents, and it is difficult to bond with the photocurable resin compositions of Patent Documents 5 and 6. Met.
- the sealing agent used is required to maintain adhesion to the electrolyte membrane even after being immersed in warm water.
- an object of the present invention is to provide a photo-curable resin composition that maintains the adhesion to an electrolyte membrane, which is a difficult-to-adhere material, even after being immersed in warm water.
- a photocurable resin composition comprising the following components (A) to (C):
- component a radical photopolymerization initiator
- C) component As the component (C1), a compound selected from one or more selected from the group consisting of a silicone oligomer having at least one alkoxy group and (meth) acryloyl group, and a silane monomer having at least one alkoxy group and isocyanate group, respectively
- C2 As a component, a mixture comprising at least one compound selected from the group consisting of a silicone oligomer having at least one alkoxy group and an epoxy group and at least one silicone oligomer having at least one alkoxy group and a phenyl group
- R 1 represents a monovalent or polyvalent aromatic hydrocarbon group, or a monovalent or polyvalent aliphatic hydrocarbon group
- PIB represents the above-mentioned — [CH 2 C (CH 3 ) 2
- R 4 represents a divalent hydrocarbon group having 2 to 6 carbon atoms which may contain an oxygen atom
- R 2 and R 3 each independently represents a hydrogen atom or a carbon number of 1
- R 5 represents a hydrogen atom, a methyl group, or an ethyl group
- n is an integer of 1 to 6.
- the photocurable sealant for a fuel cell according to [6] which is a photocurable sealant for a fuel cell.
- the photocurable sealant for a fuel cell is a sealant between adjacent separators in a fuel cell, or a sealant between a fuel cell frame and an electrolyte membrane or an electrolyte membrane electrode assembly.
- a method for sealing at least a portion between at least two flanges of a part to be sealed having at least two flanges, wherein at least one of the flanges can transmit light of active energy rays A step of applying the photocurable resin composition according to any one of [1] to [5] to at least one surface of the flange, one flange applied with the photocurable resin composition, and the other flange Bonding the flange with the photocurable resin composition, and irradiating an active energy ray through the light-transmittable flange to cure the photocurable resin composition; Sealing at least a portion of the sealing method.
- the step of applying the photocurable resin composition according to claim 1, irradiating the applied photocurable resin composition with active energy rays to cure the photocurable resin composition, and the photocurable resin Forming a gasket made of a cured product of the composition, placing the other flange on the gasket, and crimping the one flange coated with the photocurable resin composition and the other flange through the gasket; And sealing at least a part between the at least two flanges.
- a method for sealing at least a part between at least two flanges of a part to be sealed having at least two flanges the step of disposing a gasket forming mold on at least one of the flanges Injecting the photocurable resin composition according to any one of [1] to [5] into at least a part of a gap between the gasket forming mold and the flange on which the mold is disposed.
- This invention provides the photocurable resin composition which maintains the adhesive force with respect to the electrolyte membrane which is a difficult-to-adhere material even after being immersed in warm water. Moreover, the fuel cell which has high reliability can be provided by sealing with the photocurable resin composition of this invention.
- the present invention relates to a photocurable resin composition
- a photocurable resin composition comprising the following components (A) to (C) and an optional component (D).
- component a radical photopolymerization initiator (C) component : (C1) a compound selected from the group consisting of a silicone oligomer having at least one alkoxy group and (meth) acryloyl group, and a silane monomer having at least one alkoxy group and isocyanate group, and
- Component (D) comprising at least a compound selected from the group consisting of a silicone oligomer having at least one alkoxy group and an epoxy group, and a silicone oligomer having at least one alkoxy group and a phenyl
- the component (A) used in the present invention is particularly limited as long as it is a polymer having at least one (meth) acryloyl group and having a polyisobutylene skeleton containing a — [CH 2 C (CH 3 ) 2 ] — unit. It is not a thing.
- the component (A) may have, for example, a — [CH 2 C (CH 3 ) 2 ] — unit (polyisobutylene skeleton), and other than “— [CH 2 C (CH 3 ) 2 ] — units”. It may be a polymer containing “a structural unit”.
- the component (A) contains — [CH 2 C (CH 3 ) 2 ] — units, for example, 70% by mass or more, preferably 75% by mass or more, more preferably 80% by mass or more, relative to the total amount of the structural units. It is appropriate to include.
- the component (A) includes — [CH 2 C (CH 3 ) 2 ] — units, for example, 100% by mass or less, in another aspect, 95% by mass or less, and in another aspect, 90% by mass or less. Is appropriate.
- the component (A) preferably has 1 to 12 (meth) acryloyl groups, more preferably 2 to 8, more preferably 2 to 4, and particularly preferably 2 (meth) acryloyl groups.
- the polymer is not limited by theory, but can be defined as, for example, a compound having a repeating unit of a monomer in the main chain of the polymer and comprising 100 or more repeating units.
- the (meth) acryloyl group may be present at either the side chain or the end of the molecule, but is preferably present at the end of the molecule from the viewpoint of rubber elasticity.
- the component (A) is preferably a polymer having a polyisobutylene skeleton represented by the following general formula (1) from the viewpoint of excellent photocurability and adhesion to an electrolyte membrane.
- Specific examples of the component (A) include polyisobutylene having a (meth) acryloyloxyalkoxyphenyl group.
- the main skeleton of the component (A) in the present invention is a polyisobutylene skeleton, but as the monomer constituting the polyisobutylene skeleton, other than the main use of isobutylene, there is no limitation as long as the effects of the present invention are not impaired. These monomers may be copolymerized.
- (A) component is liquid at normal temperature (25 degreeC) from the application
- R 1 represents a monovalent or polyvalent aromatic hydrocarbon group or a monovalent or polyvalent aliphatic hydrocarbon group, preferably a polyvalent aromatic hydrocarbon group, particularly preferably. It is a divalent phenylene group.
- PIB represents a polyisobutylene skeleton containing the above-mentioned — [CH 2 C (CH 3 ) 2 ] — units (or composed of — [CH 2 C (CH 3 ) 2 ] — units).
- R 4 represents a divalent hydrocarbon group having 2 to 6 carbon atoms which may contain an oxygen atom, preferably a divalent hydrocarbon group having 2 or 3 carbon atoms.
- R 2 and R 3 each independently represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 20 carbon atoms, preferably a hydrogen atom.
- R 5 represents a hydrogen atom, a methyl group or an ethyl group, preferably a hydrogen atom or a methyl group.
- n is an integer of 1 to 6, particularly preferably an integer of 2 to 4.
- the molecular weight of the component (A) in the present invention is not particularly limited, but the number average molecular weight by chromatographic measurement is preferably, for example, 200 to 500,000 from the viewpoint of fluidity and physical properties after curing, Preferably it is 1,000 to 100,000, and particularly preferably 3,000 to 50,000.
- the number average molecular weight was calculated by a standard polystyrene conversion method using size permeation chromatography (SEC) unless otherwise specified.
- the viscosity at 25 ° C. of the component (A) in the present invention is not particularly limited, but is 5 Pa ⁇ s or more, preferably 50 Pa ⁇ s or more, more preferably 100 Pa ⁇ s or more from the viewpoint of workability and the like. For example, it is 3000 Pa ⁇ s or less, preferably 2500 Pa ⁇ s or less, more preferably 2000 Pa ⁇ s or less. A particularly preferred viscosity is 1550 Pa ⁇ s. Unless otherwise specified, the viscosity was measured at 25 ° C. using a cone plate viscometer.
- a method obtained by reacting a terminal hydroxyl group polyisobutylene, a (meth) acryloyl group and a compound having an isocyanate group, or a compound having a terminal hydroxyl group polyisobutylene and an isocyanate group A method obtained by reacting a compound having a meth) acryloyl group and a hydroxyl group, or a reaction between a terminal hydroxyl group polyisobutylene and (meth) acrylic acid or a (meth) acrylic acid lower ester using a dehydration esterification method or a transesterification method. And the method obtained.
- the method for producing the polyisobutylene represented by the general formula (1) is not particularly limited, but preferably the halogen-terminated polyisobutylene disclosed in JP2013-216682A and the general formula shown below.
- a method of reacting a compound having a (meth) acryloyl group and a phenoxy group as represented by (2) is mentioned.
- the halogen-terminated polyisobutylene can be obtained by a known method, for example, by cationic polymerization, and more preferably by living cationic polymerization.
- R 2 , R 3 , R 4 , and R 5 may be as defined in formula (1) above.
- R 4 represents a divalent hydrocarbon group that may contain an oxygen atom having 2 to 6 carbon atoms.
- R 2 and R 3 each independently represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 20 carbon atoms.
- R 5 represents a hydrogen atom, a methyl group, or an ethyl group.
- Examples of the compound represented by the formula (2) include phenoxymethyl (meth) acrylate, phenoxyethyl (meth) acrylate, phenoxypropyl (meth) acrylate, and the like, and preferably phenoxyethyl (meth) acrylate.
- the radical photopolymerization initiator that is the component (B) used in the present invention is limited as long as it is a compound that generates a radical or the like that cures the component (A) of the present invention by irradiation with light (active energy rays). Is not to be done.
- active energy rays are radiation such as ⁇ rays and ⁇ rays, electromagnetic waves such as ⁇ rays and X rays, electron beams (EB), ultraviolet rays having a wavelength of about 100 to 400 nm, and visible rays having a wavelength of about 400 to 800 nm. In other words, it includes all light in a broad sense, such as ultraviolet rays.
- Examples of the component (B) include an acetophenone photoradical polymerization initiator, a benzoin photoradical polymerization initiator, a benzophenone photoradical polymerization initiator, a thioxanthone photoradical polymerization initiator, and an acylphosphine oxide photoradical polymerization initiator. , Titanocene-based photoradical polymerization initiators, etc. Among them, acetophenone-based photoradical polymerization initiators, acyls from the viewpoint that a cured product having excellent surface curability and deep curability can be obtained by irradiation with active energy rays. A phosphine oxide photoradical polymerization initiator is preferred. Moreover, these may be used independently and 2 or more types may be used together.
- acetophenone photoradical polymerization initiator examples include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenyl-propan-1-one, benzyldimethyl ketal, 4- (2-hydroxyethoxy) phenyl- (2 -Hydroxy-2-propyl) ketone, 1-hydroxy-cyclohexyl-phenyl-ketone, 2-methyl-2-morpholino (4-thiomethylphenyl) propan-1-one, 2-benzyl-2-dimethylamino-1- Examples include (4-morpholinophenyl) butanone and 2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl] propanone oligomer, but are not limited thereto.
- acetophenone photoradical polymerization initiators examples include IRGACURE 184, IRGACURE 1173, IRGACURE 2959, IRGACURE 127 (manufactured by BASF), and ESACURE KIP-150 (manufactured by Lamberti spa).
- acylphosphine oxide photo radical polymerization initiator examples include bis (2,4,6-trimethylbenzoyl) -phenyl-phosphine oxide, 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide, and the like. This is not the case.
- examples of commercially available acylphosphine oxide photoradical polymerization initiators include IRGACURE TPO, IRGACURE819, IRGACURE819DW (manufactured by BASF).
- the blending amount of the component (B) of the present invention is not particularly limited, but it is preferably 0.1 to 30 masses from the viewpoint of achieving both surface curability and deep curability with respect to 100 mass parts of the component (A). Part, more preferably 0.5 to 20 parts by weight, and particularly preferably 1 to 15 parts by weight.
- the component (C) of the present invention is a mixture containing at least a component (C1) and a component (C2) described below, which are different from the components (A) and (D) of the present invention.
- the component (C1) is composed of a silicone oligomer having at least one alkoxy group and (meth) acryloyl group (but not having an epoxy group or phenyl group) and a silane monomer having at least one alkoxy group and isocyanate group.
- Component (C2) is a silicone oligomer having at least one alkoxy group and an epoxy group (but not having a (meth) acryloyl group or phenyl group) and a silicone oligomer having at least one alkoxy group and a phenyl group ( However, it is a compound selected from the group consisting of epoxy group and (meth) acryloyl group).
- the component (C) of the present invention is preferably in a liquid state at 25 ° C. because it is excellent in adhesion to the electrolyte membrane and application workability.
- the alkoxy group in (C) component For example, a methoxy group, an ethoxy group, etc. are mentioned.
- the (C1) component, the (C2) component silicone oligomer (silicone oligomer having at least one alkoxy group and (meth) acryloyl group, silicone oligomer having at least one alkoxy group and epoxy group, alkoxy group and phenyl group) Is not particularly limited, but it is preferable that the kinematic viscosity at 25 ° C. is less than 70 mm 2 / s from the viewpoint of easy penetration into the electrolyte membrane which is a porous material and excellent adhesion. Particularly preferably, it is 60 mm 2 / s or less.
- the silicone oligomers of the component (C1) and the component (C2) are not particularly limited, but are preferably 10% by weight or more and less than 40% by weight, particularly preferably from the viewpoint of excellent adhesion to the electrolyte membrane. It is 15 mass% or more and less than 30 mass%.
- the silicone oligomers of the components (C1) and (C2) in the present invention are not particularly limited.
- the weight average molecular weight is in the range of 500 to 7000, and dimethylsiloxane, methylphenylsiloxane, diphenylsiloxane, etc.
- the silicone oligomer is not particularly limited, but may be one in which two or more hydrolyzable silyl group-containing silane monomers undergo a condensation reaction and two or more organosilicon compounds are condensed to form a —Si—O—Si— structure. Can be mentioned.
- the hydrolyzable silyl group-containing silane monomer is not particularly limited, and examples thereof include dimethyldimethoxysilane, dimethyldiethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, and phenyltrimethoxy.
- Silane phenyltriethoxysilane, tetramethoxysilane, tetraethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxy Propylmethyldiethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3- Taku Lilo propyl methyl diethoxy silane and the like. Moreover, these may be used independently and 2 or more types may be used together.
- the silicone oligomer having at least one alkoxy group and (meth) acryloyl group as the component (C1) is preferably a silicone oligomer having at least one alkoxy group and at least one (meth) acryloyl group in the side chain.
- Examples of commercially available silicone oligomers having at least one alkoxy group and at least one (meth) acryloyl group in the side chain include KR-513 and X-40-2672B (manufactured by Shin-Etsu Chemical Co., Ltd.).
- the silane monomer having at least one alkoxy group and isocyanate group in the component (C1) is not particularly limited, and examples thereof include 3-isocyanatopropyltriethoxysilane, 3-isocyanatopropylmethyldiethoxysilane, and isocyanatepropyltrimethoxysilane.
- Etc. Commercially available silane monomers each having one or more alkoxy groups and isocyanate groups include KBM-9007, KBE-9007, KBE-9207 (manufactured by Shin-Etsu Chemical Co., Ltd.), A-1310, Y-5187 (Momentive Performance Materials Japan GK).
- a silicone oligomer having a methacryloyl group and a methoxy group in the side chain (X-40-9272B, manufactured by Shin-Etsu Chemical Co., Ltd.) is also preferably used.
- the silicone oligomer having at least one alkoxy group and epoxy group in the component (C2) is preferably a silicone oligomer having at least an alkoxy group and an epoxy group in the side chain.
- X-41-1056 manufactured by Shin-Etsu Chemical Co., Ltd.
- X-41-1056 and the like are mentioned as commercial products of the silicone oligomer having an alkoxy group and an epoxy group at least in the side chain.
- the silicone oligomer having at least one alkoxy group and phenyl group in the component (C2) is preferably a silicone oligomer having at least one alkoxy group and at least one phenyl group in the side chain.
- Examples of commercially available silicone oligomers each having at least one alkoxy group and one phenyl group include KR-213 (manufactured by Shin-Etsu Chemical Co., Ltd.).
- the blending amount of component (C) of the present invention is not particularly limited, but is preferably 0.1 to 50 parts by weight with respect to 100 parts by weight of component (A). More preferably, the amount is 0.5 to 30 parts by mass, and particularly preferably 1 to 20 parts by mass.
- Component is in said range, and the adhesive force with respect to an electrolyte membrane is more excellent.
- the ratio of the component (C1) to the component (C2) of the present invention is not particularly limited, but is preferably 0.1 to 5, more preferably It is 0.15 to 3, particularly preferably 0.2 to 2. By being within the above range, the adhesion to the electrolyte membrane is more excellent.
- the present invention may further contain a component (D).
- the (meth) acrylate monomer that is the component (D) of the present invention is a compound that is polymerized by the radical species generated by the component (B) of the present invention, and is used as a reactive diluent.
- the component (D) of the present invention excludes the components (A) and (C1) of the present invention.
- the component (D) for example, monofunctional, bifunctional, trifunctional and polyfunctional monomers can be used, and among these, the (A) component of the present invention is compatible with light.
- a (meth) acrylate monomer having an alkyl group having 5 to 30 carbon atoms or an alicyclic group having 5 to 30 carbon atoms is preferable.
- said carbon number it is 2 or more, for example, Preferably it is 3 or more, More preferably, it is 5 or more, More preferably, it is 7 or more, for example, 30 or less, Preferably it is 20 or less, More preferably, it is 15 or less. Preferably it is 10 or less.
- the (meth) acrylate monomer having an alkyl group having 5 to 30 carbon atoms is not particularly limited.
- Examples of the (meth) acrylate monomer having an alicyclic group having 5 to 30 carbon atoms include cyclohexyl (meth) acrylate, dicyclopentanyl (meth) acrylate, dicyclopentenyl (meth) acrylate, and dicyclopentenyloxy.
- (Meth) acrylate, isobornyl (meth) acrylate, adamantyl (meth) acrylate, dicyclopentenyl di (meth) acrylate and the like can be mentioned, and the component (D) can be used alone or as a mixture of two or more.
- the blending amount of the component (D) is preferably 3 to 300 parts by weight, more preferably 5 to 200 parts by weight, and particularly preferably 10 to 100 parts by weight with respect to 100 parts by weight of the component (A). . If the component (D) is 3 parts by mass or more, the surface curability is not likely to decrease, and if it is 300 parts by mass or less, the moisture permeability of the photocurable resin composition does not decrease, which is preferable.
- an oligomer having a (meth) acryloyl group (not including the components (A) and (D) of the present invention), a thermal radical initiator, and a polythiol within a range that does not impair the object of the present invention.
- Additives such as pigments, flame retardants, and surfactants can be used.
- the oligomer having the (meth) acryloyl group (not including the components (A) and (D) of the present invention) is not particularly limited.
- urethane (meth) acrylate having a polybutadiene skeleton hydrogenated polybutadiene skeleton Urethane (meth) acrylate, Urethane (meth) acrylate with polycarbonate skeleton, Urethane (meth) acrylate with polyether skeleton, Urethane (meth) acrylate with polyester skeleton, Urethane (meth) acrylate with castor oil skeleton, Isoprene (meth) acrylate
- Examples include hydrogenated isoprene-based (meth) acrylate, epoxy (meth) acrylate, (meth) acrylic group-containing acrylic polymer, and among others, because of excellent compatibility with the components (A) and (D) of the present invention, Polybutadiene skeleton Down (meth) acrylate,
- the thermal radical initiator is not particularly limited, and examples thereof include ketone peroxide, peroxyketal, dialkyl peroxide, hydroperoxide, peroxyester, diacyl peroxide, and peroxydicarbonate. These compounds may be used alone or in combination of two or more.
- polythiol compound examples include, but are not limited to, trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptopropionate), trimethylolpropane tris (3-mercaptobutyrate), Trimethylol ethane tris (3-mercaptobutyrate), trimethylol ethane tris (3-mercaptobutyrate), ethylene glycol bis (3-mercaptoglycolate), butanediol bis (3-mercaptoglycolate), trimethylolpropane tris (3-mercaptoglycolate), pentaerythritol tetrakis (3-mercaptoglycolate), tris-[(3-mercaptopropionyloxy) -ethyl] -isocyanurate, penta Lithritol tetrakis (3-mercaptopropionate), tetraethylene glycol bis (3-
- polythiol compounds examples include TMTP, PETP (manufactured by Sakai Chemical Co., Ltd.), TEMPIC, TMMP, PEMP, PEMP-II-20P, DPMP (manufactured by SC Organic Chemical Co., Ltd.), MTNR1, MTBD1, MTPE1 (Showa) But not limited to these. These compounds may be used alone or in combination of two or more.
- a tertiary amine compound may be blended.
- the tertiary amine compound is not particularly limited.
- a styrene copolymer may be blended for the purpose of adjusting the rubber physical properties of the cured product.
- the styrene copolymer is not particularly limited.
- styrene-butadiene copolymer styrene-isoprene copolymer (SIP), styrene-butadiene copolymer (SB), styrene-ethylene-butylene-styrene copolymer.
- SEBS polymer
- SIBS styrene-isobutylene-styrene copolymer
- AS acrylonitrile-styrene copolymer
- ABS styrene-butadiene-acrylonitrile copolymer
- a filler that does not impair storage stability may be added to the present invention.
- specific examples include organic powders, inorganic powders, and metallic powders.
- the inorganic powder filler include glass, fumed silica, alumina, mica, ceramics, silicone rubber powder, calcium carbonate, aluminum nitride, carbon powder, kaolin clay, dry clay mineral, and dry diatomaceous earth.
- the blending amount of the inorganic powder is preferably about 0.1 to 100 parts by mass with respect to 100 parts by mass of the component (A). If it is 0.1 parts by mass or more, a sufficient effect can be expected, and if it is 100 parts by mass or less, the flowability of the photocurable resin composition is not affected, and workability is not deteriorated. .
- Fumed silica can be blended for the purpose of adjusting the viscosity of the photocurable resin composition or improving the mechanical strength of the cured product.
- those hydrophobized with organochlorosilanes, polyorganosiloxane, hexamethyldisilazane, etc. can be used.
- Specific examples of fumed silica include commercially available products such as trade names Aerosil R974, R972, R972V, R972CF, R805, R812, R812S, R816, R8200, RY200, RX200, RY200S, and R202 manufactured by Nippon Aerosil. .
- organic powder filler examples include polyethylene, polypropylene, nylon, crosslinked acrylic, crosslinked polystyrene, polyester, polyvinyl alcohol, polyvinyl butyral, and polycarbonate.
- the blending amount of the organic powder is preferably about 0.1 to 100 parts by mass with respect to 100 parts by mass of the component (A). If it is 0.1 parts by mass or more, a sufficient effect can be expected, and if it is 100 parts by mass or less, the flowability of the photocurable resin composition is not affected, and workability is not deteriorated. .
- a storage stabilizer may be added to the present invention.
- a radical absorbent such as benzoquinone, hydroquinone, hydroquinone monomethyl ether, a metal chelating agent such as ethylenediaminetetraacetic acid or its 2-sodium salt, oxalic acid, acetylacetone, o-aminophenol, etc. may be added. it can.
- An antioxidant may be added to the present invention.
- the antioxidant include ⁇ -naphthoquinone, 2-methoxy-1,4-naphthoquinone, methyl hydroquinone, hydroquinone, hydroquinone monomethyl ether, mono-tert-butyl hydroquinone, 2,5-di-tert-butyl hydroquinone, p Quinone compounds such as benzoquinone, 2,5-diphenyl-p-benzoquinone, 2,5-di-tert-butyl-p-benzoquinone; phenothiazine, 2,2-methylene-bis (4-methyl-6-tert- Butylphenol), catechol, tert-butylcatechol, 2-butyl-4-hydroxyanisole, 2,6-di-tert-butyl-p-cresol, 2-tert-butyl-6- (3-tert-butyl-2- Hydroxy-5-methylbenzyl) -4-methyl Phenyl acrylate
- a light stabilizer may be added to the present invention.
- the light stabilizer include bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, and 4-benzoyl.
- An adhesion promoter (not including the component (C) of the present invention) may be added to the present invention.
- adhesion promoter 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-acryloxypropyltrimethoxysilane , Methacryloxyoctyltrimethoxysilane, vinyltrimethoxysilane, vinyltrichlorosilane, vinyltriethoxysilane, vinyl-tris ( ⁇ -methoxyethoxy) silane, ⁇ -chloropropyltrimethoxysilane, ⁇ - (3,4-epoxycyclohexyl) ) Ethyltrimethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -mercaptopropyltrimethoxy
- hydroxyethyl methacrylate phosphate, methacryloxyoxyethyl acid phosphate, methacryloxyoxyethyl acid phosphate monoethylamine half salt, 2-hydroxyethyl methacrylate phosphate and the like are preferable.
- the content of the adhesion-imparting agent is preferably 0.05 to 30 parts by mass, more preferably 0.2 to 10 parts by mass with respect to 100 parts by mass of the component (A).
- Plasticizers, pigments, flame retardants and surfactants may be added to the present invention.
- the plasticizer include petroleum-based process oils such as raffinic process oil, naphthenic process oil, and aromatic process oil, acrylic plasticizers, dibasic acids such as diethyl phthalate, dioctyl phthalate, and dibutyl adipate. And low molecular weight liquid polymers such as dialkyl, liquid polybutene, and liquid polyisoprene.
- the pigment include carbon.
- the flame retardant include a hydrated metal compound system, a phosphorus system, a silicone system, and a nitrogen compound system.
- the surfactant include an anionic surfactant, a nonionic surfactant, and a nonionic surfactant. These may be used alone or in combination of two or more.
- the photocurable resin composition of the present invention can be produced by a conventionally known method. For example, predetermined amounts of the components (A) to (C) and other optional components are blended, and using a mixing means such as a mixer, preferably at a temperature of 10 to 70 ° C., preferably 0.1 to 5 It can be manufactured by mixing for a period of time. Moreover, it is preferable to manufacture in a light-shielding environment.
- ⁇ Application method> As a method for applying the photocurable resin composition of the present invention to an adherend, known sealing agents and adhesive methods are used. For example, methods such as dispensing, spraying, inkjet, screen printing, gravure printing, dipping, spin coating using an automatic coater can be used. In addition, it is preferable that the photocurable resin composition of this invention is a liquid at 25 degreeC from a viewpoint of applicability
- the photocurable resin composition of the present invention can be cured by irradiation with light such as ultraviolet rays, visible light, and active energy rays.
- the light here refers to various active energy rays such as radiation such as ⁇ rays and ⁇ rays, electromagnetic waves such as ⁇ rays and X rays, electron beams (EB), ultraviolet rays of about 100 to 400 nm, and visible rays of about 400 to 800 nm. It means light in a broad sense including
- the light source at the time of curing is not particularly limited. A fluorescent lamp, sunlight, an electron beam irradiation apparatus, etc. are mentioned.
- the irradiation amount of light irradiation is preferably 10 kJ / m 2 or more, more preferably 15 kJ / m 2 or more from the viewpoint of the properties of the cured product.
- the cured product of the present invention is obtained by irradiating the photocurable resin composition of the present invention with light such as ultraviolet rays (active energy rays or the like) by the above curing method.
- light such as ultraviolet rays (active energy rays or the like)
- any curing method may be used.
- a photocurable sealant As a use for which the photocurable resin composition of the present invention or a cured product thereof is suitably used, a photocurable sealant is used.
- the sealing agent includes uses such as an adhesive, a coating agent, a casting agent, and a potting agent.
- the photocurable resin composition of this invention is a liquid at 25 degreeC.
- the photocurable resin composition of the present invention or a cured product thereof is a rubber elastic body excellent in low gas permeability, low moisture permeability, heat resistance, acid resistance, and flexibility. Therefore, fuel cell, solar cell, dye-sensitized solar cell, lithium ion battery, electrolytic capacitor, liquid crystal display, organic EL display, electronic paper, LED, hard disk device, photodiode, optical communication / circuit, electric wire / cable, Examples include laminated bodies such as optical fibers, optical isolators, IC cards, sensors, substrates, pharmaceutical / medical instruments / equipment, and the like. Among these uses, the photocurable resin composition of the present invention is particularly preferable for use in fuel cells because the adhesive strength to the electrolyte membrane can be maintained after being immersed in warm water.
- a fuel cell is a power generator that extracts electricity by chemically reacting hydrogen and oxygen.
- fuel cells there are four types of fuel cells: solid polymer fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells, and solid oxide fuel cells. Since the operating temperature is relatively low (around 80 ° C.) and high power generation efficiency, it is used for applications such as automobile power sources, household power generators, small power supplies for electronic devices such as mobile phones, and emergency power supplies.
- a cell 1 of a typical polymer electrolyte fuel cell is an electrolyte membrane electrode assembly having a structure in which a polymer electrolyte membrane 4 is sandwiched between an air electrode 3a and a fuel electrode 3b. 5 (MEA), a frame 6 that supports the MEA, and a separator 2 in which a gas flow path is formed.
- fuel gas hydrogen gas
- oxidizing gas oxygen gas
- a package in which several hundreds of cells are stacked is called a cell stack 10 as shown in FIG.
- a sealing agent is frequently used for the purpose of preventing leakage of fuel gas, oxygen gas and the like. Specifically, a sealant is used between adjacent separators, between the separator and the frame, between the frame and the electrolyte membrane or MEA, and the like.
- the polymer electrolyte membrane examples include a cation exchange membrane having ion conductivity, preferably a chemically stable and strong operation at a high temperature, and examples thereof include a fluorine polymer having a sulfonic acid group. It is done.
- examples of commercially available products include Nafion (registered trademark) manufactured by DuPont, Flemion (registered trademark) manufactured by Asahi Kasei Corporation, and Aciplex (registered trademark) manufactured by Asahi Glass Co., Ltd.
- the polymer electrolyte membrane is a material that hardly adheres, but can be adhered by using the photocurable resin composition of the present invention.
- the fuel electrode is called a hydrogen electrode or an anode, and a known one is used.
- carbon in which a catalyst such as platinum, nickel, ruthenium or the like is supported is used.
- the air electrode is called an oxygen electrode or a cathode, and a known one is used.
- carbon in which a catalyst such as platinum or an alloy is supported is used.
- the surface of each electrode may be provided with a gas diffusion layer that functions to diffuse gas and keep the electrolyte moist.
- a known gas diffusion layer is used, and examples thereof include carbon paper, carbon cloth, and carbon fiber.
- the separator 2 has a fine flow path with irregularities, through which fuel gas and oxidizing gas pass and are supplied to the electrodes.
- the separator is made of aluminum, stainless steel, titanium, graphite, carbon, or the like.
- the frame is used to support and reinforce a thin electrolyte membrane or MEA so as not to be broken.
- the material of the frame include thermoplastic resins such as polyvinyl chloride, polyethylene naphthalate, polyethylene terephthalate, polypropylene, and polycarbonate.
- thermoplastic resins such as polyvinyl chloride, polyethylene naphthalate, polyethylene terephthalate, polypropylene, and polycarbonate.
- a member transmits light is preferable.
- the fuel cell of the present invention is a fuel cell characterized by being sealed with the photocurable resin composition of the present invention or a cured product thereof.
- the member that needs to be sealed in the fuel cell include a separator, a frame, an electrolyte, a fuel electrode, an air electrode, and an MEA. More specific seal locations include between adjacent separators, between separators and frames, between frames and electrolyte membranes or MEAs, and the like.
- the purpose of the main seal “between the separator and the frame” or “between the polymer electrolyte membrane or MEA and the frame” is to prevent gas mixing and leakage, and between the adjacent separators.
- the purpose of the seal is to prevent gas leakage and to prevent cooling water from leaking from the cooling water flow path to the outside. In addition, since it becomes a strong acid atmosphere with the acid generated from the electrolyte membrane, the sealant is required to have acid resistance.
- the sealing method using the photo-curable resin composition of the present invention is not particularly limited, but representatively, FIPG (form in place gasket), CIPG (cure in place gasket), MIPG (mold in place gasket) And liquid injection molding.
- FIPG is capable of transmitting active energy rays such as ultraviolet rays in a state where the photo-curable resin composition of the present invention is applied to the flange of the part to be sealed by an automatic coating apparatus and bonded to the other flange.
- This is a method of irradiating from the flange side, curing the photocurable resin composition, and adhesively sealing. More specifically, it is a method for sealing at least a part between at least two flanges of a part to be sealed having at least two flanges, wherein at least one of the flanges can transmit light of active energy rays.
- a step of applying the above-mentioned photocurable resin composition to at least one surface of the flange, the one flange coated with the photocurable resin composition, and the other flange, the photocurable resin composition A step of laminating through, and a step of irradiating an active energy ray through the light transmissive flange to cure the photocurable resin composition and sealing at least a part between the at least two flanges, It is the sealing method characterized by including.
- CIPG means that the photo-curable resin composition of the present invention is bead-coated on the flange of a part to be sealed by an automatic coating apparatus or the like, and irradiated with active energy rays such as ultraviolet rays to cure the photo-curable resin composition. Form a gasket. And it is the technique of pasting together and compressing and sealing with the other flange. More specifically, there is provided a method for sealing at least a part between at least two flanges of a part to be sealed having at least two flanges, wherein at least one of the flanges includes the above-described photocurable resin.
- a mold In MIPG, a mold is pressed into contact with a flange of a part to be sealed in advance, a photocurable resin composition is injected into a cavity formed between the mold of the light transmissive material and the flange, and active energy rays such as ultraviolet rays are used. To form a gasket. And it is the technique of pasting together and compressing and sealing with the other flange.
- the mold is preferably made of a light transmissive material, and specific examples include glass, polymethyl methacrylate (PMMA), polycarbonate, cycloolefin polymer, and olefin.
- a release agent such as a fluorine type or a silicone type in advance to the mold in order to facilitate removal from the mold after the gasket is formed. More specifically, a method for sealing at least a part between at least two flanges of a part to be sealed having at least two flanges, wherein a gasket forming mold is disposed on at least one of the flanges.
- the photocurable resin composition of the present invention is poured into a mold made of a material capable of transmitting light with a specific pressure, and irradiated with active energy rays such as ultraviolet rays to be photocured to form a gasket. And it is the technique of pasting together and compressing and sealing with the other flange.
- the mold is preferably made of a light transmissive material, and specific examples include glass, PMMA, polycarbonate, cycloolefin polymer, and olefin.
- a release agent such as a fluorine type or a silicone type in advance to the mold in order to facilitate removal from the mold after the gasket is formed.
- the product was dissolved in 3000 ml of n-hexane, washed three times with 3000 ml of pure water, reprecipitated from methanol, and then the solvent was reduced in pressure.
- the polyisobutylene (a1) which has acryloyloxyethoxyphenyl group was obtained by distilling down and vacuum-drying the obtained polymer at 80 degreeC for 24 hours.
- A1 contains a — [CH 2 C (CH 3 ) 2 ] — unit and contains two acryloyl groups. More specifically, a1, in the general formula (3), R 1 represents a phenylene group, PIB represents a polyisobutylene backbone, R 4 represents a hydrocarbon group having 2 carbon atoms, R 2 and R 3 Each independently represents a hydrogen atom, R 5 represents a hydrogen atom, and n is a polyisobutylene of 2.
- the number average molecular weight (chromatography method, polystyrene conversion) of a1 component was 11,100
- the viscosity (25 degreeC) of a1 component was 1550 Pa.s.
- c1-3 Silicone oligomer having a weight average molecular weight of 889 and having a methacryloyl group and a methoxy group in the side chain (X-40-9272B, manufactured by Shin-Etsu Chemical Co., Ltd.) ⁇ (C2) component of (C) component> c2-1: Silicone oligomer having a glycidyl group and a methoxy group having a weight average molecular weight of 2749, an alkoxy group amount of 17% by mass, and a kinematic viscosity at 25 ° C.
- c'1 3-acryloxypropyltrimethoxysilane (KBM-5103, manufactured by Shin-Etsu Chemical Co., Ltd.)
- c'2 Vinyltrimethoxysilane (KBM-1003, manufactured by Shin-Etsu Chemical Co., Ltd.)
- c'3 3-glycidoxypropyltrimethoxysilane (KBM-403, manufactured by Shin-Etsu Chemical Co., Ltd.)
- c′4 N-2- (aminoethyl) -3-aminopropyltrimethoxysilane (KBM-403, manufactured by Shin-Etsu Chemical Co., Ltd.)
- d1 Isobornyl methacrylate (SR423, manufactured by Sartomer)
- test methods used in the examples and comparative examples in Table 1 are as follows.
- a photocurable resin composition is applied to a polypropylene (PP) film so as to have a thickness of 50 ⁇ m, and is bonded to a fluoropolymer electrolyte membrane having a sulfonic acid group (Nafion (registered trademark) manufactured by DuPont).
- the PP film was cured by irradiating it with ultraviolet rays for 20 seconds so that the integrated light amount was 45 kJ / m 2 to obtain a test piece.
- PP polypropylene
- Comparative Example 1 of Table 1 is a composition which does not contain the (C2) component of this invention, it turns out that the adhesiveness with respect to the electrolyte membrane after being immersed in warm water is inferior.
- Comparative Example 2 is a composition that does not contain the component (C1) of the present invention, but it can be seen that the adhesion to the electrolyte membrane is inferior in both the initial stage and the stage after being immersed in warm water.
- Comparative Example 3 is a composition changed to c1-3 instead of the component (C2) of the present invention, but it is understood that the adhesion to the electrolyte membrane after being immersed in warm water is inferior.
- Comparative Examples 4 to 7 are compositions changed to c′1 to c′4 in place of the component (C2) of the present invention, but it is understood that the adhesion to the electrolyte membrane after being immersed in warm water is poor. .
- Comparative Example 8 A comparative example 8 was obtained in the same manner as in Example 1 except that polybutadiene skeleton urethane dimethacrylate (TE-2000, manufactured by Nippon Soda Co., Ltd.) was used instead of the component (A) in Example 1. It was.
- TE-2000 polybutadiene skeleton urethane dimethacrylate
- Example 9 a preparation was made in the same manner as in Example 1 except that a polyether skeleton urethane diacrylate (UXF-4002, manufactured by Nippon Kayaku Co., Ltd.) was used instead of the component (A). Got.
- a polyether skeleton urethane diacrylate UXF-4002, manufactured by Nippon Kayaku Co., Ltd.
- the moisture permeability (g / m 2 ⁇ 24h) was calculated and evaluated based on the following evaluation criteria. The results are shown in Table 2. The detailed test method conforms to JIS Z 0208. The moisture permeability is preferably less than 50 g / m 2 ⁇ 24 h when used as a photocurable sealant for fuel cells.
- the type of test was the pressure sensor method, the conditions were 23 ° C., the test gas (hydrogen gas) on the high pressure side was measured at 100 kPa, and the evaluation was made based on the following evaluation criteria.
- the results are shown in Table 2.
- the hydrogen gas barrier property is preferably less than 1 ⁇ 10 ⁇ 15 mol ⁇ m / m 2 ⁇ s ⁇ Pa when used as a photocurable sealant for fuel cells.
- Comparative Example 8 uses urethane diacrylate having a polybutadiene skeleton in place of the component (A), but has a result that the hydrogen gas barrier property is inferior.
- Comparative Example 9 the polyether skeleton urethane diacrylate was used in place of the component (A), but the moisture permeability and hydrogen gas barrier properties were inferior.
- this invention can maintain the adhesive force with respect to an electrolyte membrane even after being immersed in warm water, it can be used for various sealing uses. In particular, it is industrially useful because it is effective as a photocurable sealant for fuel cells.
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Abstract
Description
〔1〕下記の(A)~(C)成分を含有することを特徴とする光硬化性樹脂組成物。
(A)成分:(メタ)アクリロイル基を1以上有する、-[CH2C(CH3)2]-単位を含むポリイソブチレン骨格を有するポリマー
(B)成分:光ラジカル重合開始剤
(C)成分:
(C1)成分として、アルコキシ基と(メタ)アクリロイル基とをそれぞれ1以上有するシリコーンオリゴマー、およびアルコキシ基とイソシアネート基とをそれぞれ1以上有するシランモノマーからなる群から1以上選択される化合物と
(C2)成分として、アルコキシ基とエポキシ基とをそれぞれ1以上有するシリコーンオリゴマー、及びアルコキシ基とフェニル基とをそれぞれ1以上有するシリコーンオリゴマーからなる群から1以上選択される化合物とを少なくとも含む混合物
[2]前記(A)成分が、一般式(1)で表されるポリイソブチレン骨格を有するポリマーである、[1]に記載の光硬化性樹脂組成物。
(式(1)中、R1は、一価もしくは多価芳香族炭化水素基、または一価もしくは多価脂肪族炭化水素基を示し、PIBは前記-[CH2C(CH3)2]-単位を含むポリイソブチレン骨格を示し、R4は酸素原子を含んでもよい炭素数2~6の2価の炭化水素基を表し、R2及びR3はそれぞれ独立して水素原子又は炭素数1~20の1価の炭化水素基を表し、R5は水素原子、メチル基、又はエチル基を表し、nは1~6のいずれかの整数である。)
[3]更に(D)成分として、(メタ)アクリレートモノマーを含有する、[1]または[2]に記載の光硬化性樹脂組成物。
[4]前記(D)成分が、炭素数5~30のアルキル基または炭素数5~30の脂環式基を有する(メタ)アクリレートモノマーである、[3]に記載の光硬化性樹脂組成物。
[5]前記(A)成分100質量部に対して、(C)成分0.1~30質量部、(D)成分0.1~30質量部含むことを特徴とする[1]~[4]のいずれか1項に記載の光硬化性樹脂組成物。
[6][1]~[5]のいずれか1項に記載の光硬化性樹脂組成物を含む、燃料電池用光硬化性シール剤。
[7]前記燃料電池用光硬化性シール剤が、燃料電池における部材であるセパレーター、フレーム、電解質、燃料極、空気極、及び電解質膜電極接合体からなる群のいずれかの部材周辺用燃料電池用光硬化性シール剤である、[6]に記載の燃料電池用光硬化性シール剤。
[8]前記燃料電池用光硬化性シール剤が、燃料電池における隣り合うセパレーター同士との間のシール剤、若しくは燃料電池のフレームと電解質膜または電解質膜電極接合体との間のシール剤である、[6]に記載の燃料電池用光硬化性シール剤。
[9]前記燃料電池が、固体高分子形燃料電池である、[6]~[8]のいずれか1項に記載の燃料電池用光硬化性シール剤。
[10][1]~[5]のいずれか1項に記載の光硬化性樹脂組成物または[6]~[9]のいずれか1項に記載のシール剤を光硬化してなる硬化物。
[11]燃料電池における隣り合うセパレーター同士との間のシール、及び燃料電池のフレームと電解質膜または電解質膜電極接合体との間のシールからなる群のいずれかを含む燃料電池であって、前記いずれかのシールが、[10]に記載の硬化物を含む、燃料電池。
[12]前記燃料電池が、固体高分子形燃料電池である、[11]に記載の燃料電池。
[13]少なくとも2つのフランジを有する被シール部品の当該少なくとも2つのフランジの間の少なくとも一部をシールする方法であって、前記フランジの少なくとも一方が活性エネルギー線の光を透過可能であり、前記フランジの少なくとも一方の表面に、[1]~[5]のいずれか1項に記載の光硬化性樹脂組成物を塗布する工程、前記光硬化性樹脂組成物を塗布した一方のフランジと他方のフランジとを前記光硬化性樹脂組成物を介して貼り合わせる工程、及び、活性エネルギー線を前記光透過可能なフランジを通して照射して前記光硬化性樹脂組成物を硬化させ、前記少なくとも2つのフランジの間の少なくとも一部をシールする工程、を含むことを特徴とする前記シール方法。
[14]少なくとも2つのフランジを有する被シール部品の当該少なくとも2つのフランジの間の少なくとも一部をシールする方法であって、前記フランジの少なくとも一方のフランジに、[1]~[5]のいずれか1項に記載の光硬化性樹脂組成物を塗布する工程、前記塗布した光硬化性樹脂組成物に活性エネルギー線を照射して前記光硬化性樹脂組成物を硬化させ、前記光硬化性樹脂組成物の硬化物からなるガスケットを形成する工程、他方のフランジを前記ガスケット上に配置して、光硬化性樹脂組成物を塗布した一方のフランジと前記他方のフランジとを前記ガスケットを介して圧着し、前記少なくとも2つのフランジの間の少なくとも一部をシールする工程、を含むことを特徴とする前記シール方法。
[15]少なくとも2つのフランジを有する被シール部品の当該少なくとも2つのフランジの間の少なくとも一部をシールする方法であって、前記フランジの少なくとも一方のフランジ上にガスケット形成用金型を配置する工程、前記ガスケット形成用金型と該金型を配置したフランジとの間の空隙の少なくとも一部に[1]~[5]のいずれか1項に記載の光硬化性樹脂組成物を注入する工程、前記光硬化性樹脂組成物に前記活性エネルギー線を照射して前記光硬化性樹脂組成物を硬化させ、前記光硬化性樹脂組成物の硬化物からなるガスケットを形成する工程、前記金型を前記一方のフランジから取り外す工程、他方のフランジを前記ガスケット上に配置して、前記一方のフランジと前記他方のフランジとを前記ガスケットを介して圧着し、前記少なくとも2つのフランジの間の少なくとも一部をシールする工程、を含むことを特徴とするシール方法。
<光硬化性樹脂組成物>
本発明は、下記の(A)~(C)成分及び任意の(D)成分を含有することを特徴とする光硬化性樹脂組成物に関する。
(A)成分:(メタ)アクリロイル基を1以上有する、-[CH2C(CH3)2]-単位を含むポリイソブチレン骨格を有するポリマー
(B)成分:光ラジカル重合開始剤
(C)成分:
(C1)成分として、アルコキシ基と(メタ)アクリロイル基とをそれぞれ1以上有するシリコーンオリゴマーおよびアルコキシ基とイソシアネート基とをそれぞれ1以上有するシランモノマーからなる群から1以上選択される化合物と
(C2)成分として、アルコキシ基とエポキシ基とをそれぞれ1以上有するシリコーンオリゴマー、及びアルコキシ基とフェニル基とをそれぞれ1以上有するシリコーンオリゴマーからなる群から1以上選択される化合物とを少なくとも含む混合物
(D)成分:(メタ)アクリレートモノマー。
本発明の光硬化性樹脂組成物の各(A)~(D)成分、並びに任意成分は、下記のいずれかの条件を満たすものを任意に組み合わせて使用することができる。なお、各(A)~(D)成分は相互に異なる成分である。
本発明に用いられる(A)成分とは、(メタ)アクリロイル基を1以上有する、-[CH2C(CH3)2]-単位を含むポリイソブチレン骨格を有するポリマーであれば特に限定されるものではない。(A)成分としては、例えば、-[CH2C(CH3)2]-単位(ポリイソブチレン骨格)を有すればよく、「-[CH2C(CH3)2]-単位以外の他の構成単位」を含むポリマーであってもよい。(A)成分は、-[CH2C(CH3)2]-単位を、構成単位全量に対して、例えば70質量%以上含み、好ましくは75質量%以上含み、より好ましくは80質量%以上含むことが適当である。また、(A)成分は、-[CH2C(CH3)2]-単位を、例えば100質量%以下含み、別の態様では95質量%以下含み、また別の態様では90質量%以下含むことが適当である。(A)成分は、(メタ)アクリロイル基を、好ましくは1~12個、より好ましくは2~8個、さらに好ましくは2~4個、特に好ましくは2個有することが適当である。なお、本発明において、ポリマーとは、理論にとらわれないが、例えば、ポリマーの主鎖にモノマーの繰り返し単位を伴う構造で、100以上の繰り返し単位からなる化合物を指すと定義できる。また、(メタ)アクリロイル基は分子の側鎖、または、末端のいずれに存在していてもかまわないが、ゴム弾性の点から、分子の末端に存在することが好ましい。
本発明に用いられる(B)成分である光ラジカル重合開始剤は、光(活性エネルギー線)を照射することにより、本発明の(A)成分を硬化せしめるラジカル等を発生させる化合物であれば限定されるものではない。ここで活性エネルギー線とは、α線やβ線等の放射線、γ線やX線等の電磁波、電子線(EB)、波長が100~400nm程度の紫外線、波長が400~800nm程度の可視光線等の広義の光全てを含むものであり、好ましくは紫外線である。(B)成分としては、例えば、アセトフェノン系光ラジカル重合開始剤、ベンゾイン系光ラジカル重合開始剤、ベンゾフェノン系光ラジカル重合開始剤、チオキサントン系光ラジカル重合開始剤、アシルホスフィンオキサイド系光ラジカル重合開始剤、チタノセン系光ラジカル重合開始剤等が挙げられ、この中でも、活性エネルギー線を照射することにより表面硬化性および深部硬化性に優れる硬化物が得られるという観点からアセトフェノン系光ラジカル重合開始剤、アシルホスフィンオキサイド系光ラジカル重合開始剤が好ましい。またこれらは単独で用いてもよく、2種以上が併用されてもよい。
本発明の(C)成分は、本発明の(A)成分及び(D)成分とは異なる、以下に説明する(C1)成分と(C2)成分とを少なくとも含む混合物である。(C1)成分は、アルコキシ基と(メタ)アクリロイル基とをそれぞれ1以上有するシリコーンオリゴマー(但し、エポキシ基やフェニル基を有さない)およびアルコキシ基とイソシアネート基とをそれぞれ1以上有するシランモノマーからなる群から1以上選択される化合物である。(C2)成分は、アルコキシ基とエポキシ基とをそれぞれ1以上有するシリコーンオリゴマー(但し、(メタ)アクリロイル基やフェニル基を有さない)およびアルコキシ基とフェニル基とをそれぞれ1以上有するシリコーンオリゴマー(但し、エポキシ基や(メタ)アクリロイル基を有さない)からなる群から1以上選択される化合物である。このような(C)成分と、本発明のその他成分と組み合わせることにより、電解質膜に対する密着力を温水に浸漬後も維持するという効果を有する。本発明の(C)成分は、25℃で液状あるものが、電解質膜に対する密着力および塗布作業性の点で優れることからから好ましい。なお、(C)成分におけるアルコキシ基とは、特に限定されないが、例えばメトキシ基、エトキシ基などが挙げられる。
本発明に更に(D)成分を含んでもよい。本発明の(D)成分である(メタ)アクリレートモノマーとは、本発明の(B)成分が発生するラジカル種により重合する化合物であり、反応性希釈剤として用いられる。但し、本発明の(D)成分は、本発明の(A)成分、(C1)成分を除くものとする。(D)成分としては、例えば単官能性、二官能性、三官能性及び多官能性のモノマー等を使用することができ、これらの中でも、本発明の(A)成分と相溶し、光硬化性が優れることから、炭素数5~30のアルキル基または炭素数5~30の脂環式基を有する(メタ)アクリレートモノマーが好ましい。ここで、上記炭素数としては、例えば2以上、好ましくは3以上、より好ましくは5以上、さらに好ましくは7以上であり、また、例えば30以下、好ましくは20以下、より好ましくは15以下、さらに好ましくは10以下である。
本発明の組成物に対し、本発明の目的を損なわない範囲で、(メタ)アクリロイル基を有するオリゴマー(本発明の(A)成分と(D)成分を含まない)、熱ラジカル開始剤、ポリチオール化合物、3級アミン化合物、スチレン系共重合体等の各種エラストマー、充填材、保存安定剤、酸化防止剤、光安定剤、密着付与剤(本発明の(C)成分を含まない)、可塑剤、顔料、難燃剤、及び界面活性剤等の添加剤を使用することができる。
本発明の光硬化性樹脂組成物を被着体への塗布する方法としては、公知のシール剤や接着剤の方法が用いられる。例えば、自動塗布機を用いたディスペンシング、スプレー、インクジェット、スクリーン印刷、グラビア印刷、ディッピング、スピンコートなどの方法を用いることができる。なお、本発明の光硬化性樹脂組成物は、塗布性の観点から25℃で液状であることが好ましい。
本発明の光硬化性樹脂組成物は、紫外線、可視光、活性エネルギー線等の光を照射することにより硬化させることができる。ここでいう光は、α線やβ線等の放射線、γ線やX線等の電磁波、電子線(EB)、100~400nm程度の紫外線、400~800nm程度の可視光線等の各種活性エネルギー線を含む広義の光を意味する。硬化させる際の光源は特に限定されず、例えば、低圧水銀灯、中圧水銀灯、高圧水銀灯、超高圧水銀灯、ブラックライトランプ、マイクロウェーブ励起水銀灯、メタルハライドランプ、ナトリウムランプ、ハロゲンランプ、キセノンランプ、LED、蛍光灯、太陽光、電子線照射装置等が挙げられる。光照射の照射量は硬化物の特性の観点から10kJ/m2以上であることが好ましく、より好ましくは15kJ/m2以上である。
本発明の硬化物は、本発明の光硬化性樹脂組成物に対し、上記硬化方法によって紫外線等の光(活性エネルギー線等)を照射することにより硬化させてなる。本発明の硬化物は、本発明の光硬化性樹脂組成物が硬化したものであれば、その硬化方法の如何は問わない。
本発明の光硬化性樹脂組成物またはその硬化物が好適に用いられる用途としては、光硬化性シール剤である。本発明においてシール剤とは、接着剤、コーティング剤、注型剤、ポッティング剤等の用途も含まれるものである。なお、このような用途で使用するにあたり、本発明の光硬化性樹脂組成物は25℃で液状であることが好ましい。
燃料電池とは、水素と酸素を化学的に反応させることにより電気を取り出す発電装置である。また、燃料電池には、固体高分子形燃料電池、りん酸形燃料電池、溶融炭酸塩形燃料電池、固体酸化物形燃料電池の4つの方式があるが、中でも固体高分子形燃料電池は、運転温度が比較的低温(80℃前後)でありながら高発電効率であるので、自動車用動力源、家庭用発電装置、携帯電話などの電子機器用小型電源、非常電源等の用途に用いられる。
燃料極(アノード電極):H2→2H++2e-
酸素極(カソード電極):1/2O2+2H++2e-→H2O
ナフィオン(登録商標)
本発明の光硬化性樹脂組成物を用いたシール手法としては、特に限定されないが、代表的には、FIPG(フォームインプレイスガスケット)、CIPG(キュアーインプレイスガスケット)、MIPG(モールドインプレイスガスケット)、液体射出成形などが挙げられる。
各成分を表1に示す質量部で採取し、遮光環境下にてプラネタリーミキサーで60分間、常温(25℃)で混合し、光硬化性樹脂組成物を調製し、各種物性に関して次のようにして測定した。尚詳細な調製量は表1に従い、数値は全て質量部で表記する。
5Lのセパラブルフラスコの容器内を窒素置換した後、n-ヘキサン200mL及び塩化ブチル2000mLを加え、窒素雰囲気下で攪拌しながら-70℃まで冷却した。次いで、イソブチレン840mL(9mol))、p-ジクミルクロライド12g(0.05mol)及び2-メチルピリジン1.1g(0.012mol)を加えた。反応混合物が-70℃まで冷却された後で、四塩化チタン5.0mL(0.05mol)を加えて重合を開始した。重合開始3時間後に、フェノキシエチルアクリレート(ライトアクリレートPO-A、共栄社化学株式会社製)40gと四塩化チタン110mlを添加した。その後、-70℃で4時間攪拌を続けた後、メタノール1000mlを添加して反応を停止させた。
反応溶液から上澄み液を分取し、溶剤等を留去した後、生成物をn-ヘキサン3000mlに溶解させ、3000mlの純水で3回水洗を行い、メタノールから再沈殿した後、溶媒を減圧下に留去して、得られた重合体を80℃で24時間真空乾燥することにより、アクリロイルオキシエトキシフェニル基を有するポリイソブチレン(a1)を得た。
なお、a1成分の数平均分子量(クロマトグラフィー法、ポリスチレン換算)は11,100であり、a1成分の粘度(25℃)は1550Pa・sであった。
b1:2-ヒドロキシ-2-メチル-1-フェニル-プロパン-1-オン(IRGACURE1173、BASF社製)
<(C)成分の(C1)成分>
c1-1:3-イソシアネートプロピルトリエトキシシラン(KBE-9007、信越化学工業株式会社製)
c1-2:重量平均分子量が2639、アルコキシ基量20質量%、25℃の動粘度が35mm2/sのアクリロイル基とメトキシ基を側鎖に有するシリコーンオリゴマー(KR-513、信越化学工業株式会社製)
c1-3:重量平均分子量が889、メタクリロイル基とメトキシ基を側鎖に有するシリコーンオリゴマー(X-40-9272B、信越化学工業株式会社製)
<(C)成分の(C2)成分>
c2-1:重量平均分子量が2749、アルコキシ基量17質量%、25℃の動粘度が50mm2/sのグリシジル基とメトキシ基を有するシリコーンオリゴマー(X-41-1056、信越化学工業株式会社製)
c2-2:アルコキシ基量20質量%、25℃の動粘度が16mm2/sのフェノキシ基とメトキシ基を側鎖に有するシリコーンオリゴマー(KR-213、信越化学工業株式会社製)
<(C)成分の比較成分>
c’1:3-アクリロキシプロピルトリメトキシシラン(KBM-5103、信越化学工業株式会社製)
c’2:ビニルトリメトキシシラン(KBM-1003、信越化学工業株式会社製)
c’3:3-グリシドキシプロピルトリメトキシシラン(KBM-403、信越化学工業株式会社製)
c’4:N-2-(アミノエチル)-3-アミノプロピルトリメトキシシラン(KBM-403、信越化学工業株式会社製)
<(D)成分>
d1:イソボルニルメタクリレート(SR423、サートマー社製)
ポリプロピレン(PP)フィルムに光硬化性樹脂組成物を50μm厚となるように塗布し、それを、スルホン酸基を持つフッ素系ポリマーの電解質膜(ナフィオン(登録商標)デュポン社製)に貼り合わせ、PPフィルムの方から積算光量45kJ/m2になるように20秒間紫外線を照射して硬化させ試験片とした。次に、電解質膜からPPフィルムと共に光硬化性樹脂組成物の硬化物を180度方向に、引っ張り試験機を用いて10mm/分の速度で引き剥がした。接着界面を観察し、下記基準に基づき評価を行った。
[評価基準]
Very Good(優良):電解質膜破断
Good(良好):CF(凝集破壊)発生、AF(PPフィルムあるいは電解質膜から界面破壊)なし
Bad(不良):AF(PPフィルムあるいは電解質膜から界面破壊)発生
初期の電解質膜に対する密着性試験と同様に、まずポリプロピレン(PP)フィルムに光硬化性樹脂組成物を50μm厚となるように塗布し、それを、スルホン酸基を持つフッ素系ポリマーの電解質膜(ナフィオン(登録商標)デュポン社製)に貼り合わせ、PPフィルムの方から積算光量45kJ/m2になるように20秒間紫外線を照射して硬化させ試験片とした。次に前記試験片を90℃の温水に100時間浸漬させた後に、取り出して25℃で6時間乾燥させた。次に、浸漬後の試験片の電解質膜からPPフィルムと共に光硬化性樹脂組成物の硬化物を180度方向に、引っ張り試験機を用いて10mm/分の速度で引き剥がした。接着界面を観察し、下記基準に基づき評価を行った。
[評価基準]
Very Good(優良):電解質膜破断
Good(良好):CF(凝集破壊)発生、AF(PPフィルムまたは電解質膜から界面破壊)なし
Bad(不良):AF(PPフィルムまたは電解質膜から界面破壊)発生
実施例1において、(A)成分の代わりにポリブタジエン骨格のウレタンジメタクリレート(TE-2000、日本曹達株式会社製)にした以外は、実施例1と同様にして、調製し、比較例8を得た。
実施例1において、(A)成分の代わりにポリエーテル骨格のウレタンジアクリレート(UXF-4002、日本化薬株式会社製)にした以外は、実施例1と同様にして、調製し、比較例9を得た。
200mm×200mm×1.0mmの枠に実施例1、2と比較例8、9の光硬化性樹脂組成物を流し込んだ。その後、紫外線照射機により積算光量45kJ/m2になるように紫外線を20秒間照射し、厚さ1.0mmのシート状の硬化物を作成した。塩化カルシウム(無水)5gを直径30mmの開口部を有するアルミニウム製カップに入れて、前記硬化物をカップにセットした。「初期の全質量」(g)を測定した後、雰囲気温度40℃で相対湿度95%に保たれた恒温恒湿槽に24時間放置し、「放置後の全質量」(g)を測定して、透湿度(g/m2・24h)を計算し、下記評価基準に基づき評価した。結果を表2に示す。詳細な試験方法はJIS Z 0208に準拠する。なお、透湿度は、燃料電池用光硬化性シール剤として使用する場合、50g/m2・24h未満であることが好ましい。
[評価基準]
Very Good(優良):透湿度が、10g/m2・24h未満
Good(良好):透湿度が、10g/m2・24h以上、50g/m2・24h未満
Bad(不良):透湿度が、50g/m2・24h以上
実施例1、2と比較例8、9の光硬化性樹脂組成物を用いて紫外線照射機により積算光量45kJ/m2になるように紫外線を20秒間照射し、厚さ1.0mmのシート状の硬化物を作成した。次にシート状の硬化物を用いて、JIS K7126-1:2006(プラスチック-フィルム及びシート-ガス透過度試験方法-第1部:差圧法)に準拠し測定した。尚、試験の種類は圧力センサ法であり、条件は23℃、高圧側の試験ガス(水素ガス)は100kPaにて測定し、下記評価基準に基づき評価した。結果を表2に示す。なお、水素ガスバリア性は、燃料電池用光硬化性シール剤として使用する場合、1×10-15mol・m/m2・s・Pa未満であることが好ましい。
[評価基準]
Good(良好):1×10-15mol・m/m2・s・Pa未満
Bad(不良):1×10-15mol・m/m2・s・Pa以上
2 セパレーター
3a 空気極(カソード)
3b 燃料極(アノード)
4 高分子電解質膜
5 電解質膜電極接合体(MEA)
6 フレーム
7 接着剤またはシール剤
8a 酸化ガス流路
8b 燃料ガス流路
9 冷却水流路
10 セルスタック
11 固体高分子形燃料電池
Claims (15)
- 下記の(A)~(C)成分を含有することを特徴とする光硬化性樹脂組成物。
(A)成分:(メタ)アクリロイル基を1以上有する、-[CH2C(CH3)2]-単位を含むポリイソブチレン骨格を有するポリマー
(B)成分:光ラジカル重合開始剤
(C)成分:
(C1)成分として、アルコキシ基と(メタ)アクリロイル基とをそれぞれ1以上有するシリコーンオリゴマー、およびアルコキシ基とイソシアネート基とをそれぞれ1以上有するシランモノマーからなる群から1以上選択される化合物と
(C2)成分として、アルコキシ基とエポキシ基とをそれぞれ1以上有するシリコーンオリゴマー、及びアルコキシ基とフェニル基とをそれぞれ1以上有するシリコーンオリゴマーからなる群から1以上選択される化合物とを少なくとも含む混合物 - 更に(D)成分として、(メタ)アクリレートモノマーを含有する、請求項1または2に記載の光硬化性樹脂組成物。
- 前記(D)成分が、炭素数5~30のアルキル基または炭素数5~30の脂環式基を有する(メタ)アクリレートモノマーである、請求項3に記載の光硬化性樹脂組成物。
- 前記(A)成分100質量部に対して、(C)成分0.1~30質量部、(D)成分0.1~30質量部含む、請求項1~4のいずれか1項に記載の光硬化性樹脂組成物。
- 請求項1~5のいずれか1項に記載の光硬化性樹脂組成物を含む、燃料電池用光硬化性シール剤。
- 前記燃料電池用光硬化性シール剤が、燃料電池における部材であるセパレーター、フレーム、電解質、燃料極、空気極、及び電解質膜電極接合体からなる群のいずれかの部材周辺用燃料電池用光硬化性シール剤である、請求項6に記載の燃料電池用光硬化性シール剤。
- 前記燃料電池用光硬化性シール剤が、燃料電池における隣り合うセパレーター同士との間のシール剤、若しくは燃料電池のフレームと電解質膜または電解質膜電極接合体との間のシール剤である、請求項6に記載の燃料電池用光硬化性シール剤。
- 前記燃料電池が、固体高分子形燃料電池である、請求項6~8のいずれか1項に記載の燃料電池用光硬化性シール剤。
- 請求項1~5のいずれか1項に記載の光硬化性樹脂組成物または請求項6~9のいずれか1項に記載のシール剤を光硬化してなる硬化物。
- 燃料電池における隣り合うセパレーター同士との間のシール、及び燃料電池のフレームと電解質膜または電解質膜電極接合体との間のシールからなる群のいずれかを含む燃料電池であって、前記いずれかのシールが、請求項10に記載の硬化物を含む、燃料電池。
- 前記燃料電池が、固体高分子形燃料電池である、請求項11に記載の燃料電池。
- 少なくとも2つのフランジを有する被シール部品の当該少なくとも2つのフランジの間の少なくとも一部をシールする方法であって、前記フランジの少なくとも一方が活性エネルギー線の光を透過可能であり、前記フランジの少なくとも一方の表面に、請求項1~5のいずれか1項に記載の光硬化性樹脂組成物を塗布する工程、前記光硬化性樹脂組成物を塗布した一方のフランジと他方のフランジとを前記光硬化性樹脂組成物を介して貼り合わせる工程、及び、活性エネルギー線を前記光透過可能なフランジを通して照射して前記光硬化性樹脂組成物を硬化させ、前記少なくとも2つのフランジの間の少なくとも一部をシールする工程、を含むことを特徴とする前記シール方法。
- 少なくとも2つのフランジを有する被シール部品の当該少なくとも2つのフランジの間の少なくとも一部をシールする方法であって、前記フランジの少なくとも一方のフランジに、請求項1~5のいずれか1項に記載の光硬化性樹脂組成物を塗布する工程、前記塗布した光硬化性樹脂組成物に活性エネルギー線を照射して前記光硬化性樹脂組成物を硬化させ、前記光硬化性樹脂組成物の硬化物からなるガスケットを形成する工程、他方のフランジを前記ガスケット上に配置して、光硬化性樹脂組成物を塗布した一方のフランジと前記他方のフランジとを前記ガスケットを介して圧着し、前記少なくとも2つのフランジの間の少なくとも一部をシールする工程、を含むことを特徴とする前記シール方法。
- 少なくとも2つのフランジを有する被シール部品の当該少なくとも2つのフランジの間の少なくとも一部をシールする方法であって、前記フランジの少なくとも一方のフランジ上にガスケット形成用金型を配置する工程、前記ガスケット形成用金型と該金型を配置したフランジとの間の空隙の少なくとも一部に請求項1~5のいずれか1項に記載の光硬化性樹脂組成物を注入する工程、前記光硬化性樹脂組成物に前記活性エネルギー線を照射して前記光硬化性樹脂組成物を硬化させ、前記光硬化性樹脂組成物の硬化物からなるガスケットを形成する工程、前記金型を前記一方のフランジから取り外す工程、他方のフランジを前記ガスケット上に配置して、前記一方のフランジと前記他方のフランジとを前記ガスケットを介して圧着し、前記少なくとも2つのフランジの間の少なくとも一部をシールする工程、を含むことを特徴とするシール方法。
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| CN201880024604.6A CN110520454A (zh) | 2017-04-14 | 2018-04-13 | 光固化性树脂组合物、使用该光固化性树脂组合物的燃料电池和密封方法 |
| EP18783645.7A EP3611200A4 (en) | 2017-04-14 | 2018-04-13 | COMPOSITION OF PHOTOSETTING RESIN, FUEL CELL USING IT AND SEALING PROCESS |
| US16/604,258 US20200157270A1 (en) | 2017-04-14 | 2018-04-13 | Photocurable resin composition, fuel cell using same, and sealing method |
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Cited By (7)
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|---|---|---|---|---|
| JP2021021012A (ja) * | 2019-07-29 | 2021-02-18 | アイカ工業株式会社 | 光硬化型ガスケット樹脂組成物 |
| JP2021134327A (ja) * | 2020-02-28 | 2021-09-13 | アイカ工業株式会社 | ハードディスクドライブ用光硬化型ガスケット樹脂組成物及びハードディスクドライブ |
| WO2022044596A1 (ja) * | 2020-08-31 | 2022-03-03 | 株式会社スリーボンド | 硬化性樹脂組成物、燃料電池およびシール方法 |
| JPWO2022080044A1 (ja) * | 2020-10-13 | 2022-04-21 | ||
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| WO2024106157A1 (ja) * | 2022-11-18 | 2024-05-23 | 株式会社スリーボンド | ガスケット成形方法、シール方法、ガスケット、複合体、燃料電池 |
| WO2025052775A1 (ja) * | 2023-09-07 | 2025-03-13 | 株式会社スリーボンド | 光硬化性樹脂組成物 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0288614A (ja) | 1988-08-05 | 1990-03-28 | Edison Polymer Innov Corp | 重合体組成物 |
| JP2004075824A (ja) | 2002-08-15 | 2004-03-11 | Shin Etsu Chem Co Ltd | 硬化性フルオロポリエーテル系ゴム組成物及びゴム製品 |
| JP2004111146A (ja) | 2002-09-17 | 2004-04-08 | Mitsui Chemicals Inc | 燃料電池シール部品用重合体組成物、燃料電池シール部品、燃料電池シール部品の製造方法、および燃料電池 |
| JP2007100099A (ja) | 2002-12-05 | 2007-04-19 | Daikin Ind Ltd | 含フッ素ポリマー組成物及び硬化体 |
| JP2009531516A (ja) | 2006-03-29 | 2009-09-03 | ナショナル スターチ アンド ケミカル インベストメント ホールディング コーポレイション | 放射線−硬化性ゴム系接着剤/シーラント |
| JP2011124258A (ja) | 2009-12-08 | 2011-06-23 | Furukawa Electric Co Ltd:The | 窒化物系ダイオード |
| JP2013148785A (ja) * | 2012-01-20 | 2013-08-01 | Kaneka Corp | 画像表示装置およびその製造方法 |
| JP2013216782A (ja) | 2012-04-09 | 2013-10-24 | Kaneka Corp | 硬化性組成物およびその用途 |
| WO2017018547A1 (ja) * | 2015-07-30 | 2017-02-02 | 株式会社スリーボンド | 光硬化性樹脂組成物、燃料電池およびシール方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4287326A (en) * | 1980-03-03 | 1981-09-01 | Toray Silicone Company, Ltd. | Siloxane-modified epoxy resin compositions |
| CN102459476A (zh) * | 2009-06-05 | 2012-05-16 | Dnp精细化工股份有限公司 | 活性能量射线固化型喷墨记录用油墨组合物 |
| CN105295414A (zh) * | 2015-11-24 | 2016-02-03 | 刘志辉 | 一种锚固剂 |
-
2018
- 2018-04-13 JP JP2019512580A patent/JPWO2018190421A1/ja active Pending
- 2018-04-13 EP EP18783645.7A patent/EP3611200A4/en not_active Withdrawn
- 2018-04-13 CN CN201880024604.6A patent/CN110520454A/zh active Pending
- 2018-04-13 US US16/604,258 patent/US20200157270A1/en not_active Abandoned
- 2018-04-13 WO PCT/JP2018/015545 patent/WO2018190421A1/ja not_active Ceased
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0288614A (ja) | 1988-08-05 | 1990-03-28 | Edison Polymer Innov Corp | 重合体組成物 |
| JP2004075824A (ja) | 2002-08-15 | 2004-03-11 | Shin Etsu Chem Co Ltd | 硬化性フルオロポリエーテル系ゴム組成物及びゴム製品 |
| JP2004111146A (ja) | 2002-09-17 | 2004-04-08 | Mitsui Chemicals Inc | 燃料電池シール部品用重合体組成物、燃料電池シール部品、燃料電池シール部品の製造方法、および燃料電池 |
| JP2007100099A (ja) | 2002-12-05 | 2007-04-19 | Daikin Ind Ltd | 含フッ素ポリマー組成物及び硬化体 |
| JP2009531516A (ja) | 2006-03-29 | 2009-09-03 | ナショナル スターチ アンド ケミカル インベストメント ホールディング コーポレイション | 放射線−硬化性ゴム系接着剤/シーラント |
| JP2011124258A (ja) | 2009-12-08 | 2011-06-23 | Furukawa Electric Co Ltd:The | 窒化物系ダイオード |
| JP2013148785A (ja) * | 2012-01-20 | 2013-08-01 | Kaneka Corp | 画像表示装置およびその製造方法 |
| JP2013216782A (ja) | 2012-04-09 | 2013-10-24 | Kaneka Corp | 硬化性組成物およびその用途 |
| WO2017018547A1 (ja) * | 2015-07-30 | 2017-02-02 | 株式会社スリーボンド | 光硬化性樹脂組成物、燃料電池およびシール方法 |
Non-Patent Citations (3)
| Title |
|---|
| "Polymer Bulletin", vol. 6, 1981, pages: 135 - 141 |
| See also references of EP3611200A4 |
| T. P. LIAOJ. P. KENNEDY, POLYER BULLETIN, vol. 20, 1988, pages 253 - 260 |
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| EP3611200A4 (en) | 2020-12-30 |
| US20200157270A1 (en) | 2020-05-21 |
| CN110520454A (zh) | 2019-11-29 |
| EP3611200A1 (en) | 2020-02-19 |
| JPWO2018190421A1 (ja) | 2020-05-21 |
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