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WO2019220895A1 - Composition de résine - Google Patents

Composition de résine Download PDF

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Publication number
WO2019220895A1
WO2019220895A1 PCT/JP2019/017404 JP2019017404W WO2019220895A1 WO 2019220895 A1 WO2019220895 A1 WO 2019220895A1 JP 2019017404 W JP2019017404 W JP 2019017404W WO 2019220895 A1 WO2019220895 A1 WO 2019220895A1
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WO
WIPO (PCT)
Prior art keywords
resin composition
dispersant
molecular weight
elastomer
thermoplastic resin
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
Application number
PCT/JP2019/017404
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English (en)
Japanese (ja)
Inventor
中島　啓造
章浩 野末
直弥 福島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP2018095648A external-priority patent/JP7213459B2/ja
Priority claimed from JP2018134472A external-priority patent/JP2020012050A/ja
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to CN201980032575.2A priority Critical patent/CN112119127B/zh
Publication of WO2019220895A1 publication Critical patent/WO2019220895A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes

Definitions

  • the present disclosure relates generally to resin compositions, and more particularly to resin compositions containing cellulose fibers.
  • Patent Document 1 discloses a composite resin molded body. This composite resin molding is composed of a melt-kneaded product containing a main resin, an organic fibrous filler, and a dispersant.
  • the organic fibrous filler is a cellulose containing cellulose.
  • An object of the present disclosure is to provide a resin composition capable of obtaining a molded product having both rigidity and impact resistance.
  • the resin composition according to one embodiment of the present disclosure contains a thermoplastic resin, cellulose fiber, a dispersant, and an elastomer.
  • the resin composition according to another embodiment of the present disclosure contains a thermoplastic resin, cellulose fibers, and a dispersant.
  • the dispersant includes a plurality of components having different weight average molecular weights.
  • the resin composition which concerns on this embodiment contains a thermoplastic resin, a cellulose fiber, a dispersing agent, and an elastomer.
  • a molded product can be obtained by using a molding method such as injection molding.
  • This molded product has both rigidity and impact resistance. That is, rigidity can be imparted to the molded product by uniformly dispersing the cellulose fibers in the thermoplastic resin with the dispersant. Furthermore, impact resistance can be imparted to the molded article by lowering the embrittlement temperature of the thermoplastic resin with the elastomer.
  • the resin composition according to the present embodiment contains a thermoplastic resin, cellulose fibers, a dispersant, and an elastomer.
  • the form of the resin composition at room temperature is, for example, a spherical, cylindrical, or prismatic pellet.
  • a thermoplastic resin, a cellulose fiber, a dispersing agent, and an elastomer are demonstrated in order.
  • thermoplastic resin is classified into a crystalline resin and an amorphous resin, but is not particularly limited.
  • specific examples of the thermoplastic resin include polyolefin (including cyclic polyolefin), ABS resin, polyvinyl chloride, polystyrene, polyester, nylon, polyvinyl ether, polyvinyl alcohol, polyamide, polycarbonate, and polysulfone.
  • polyolefin is particularly preferable because of its low specific gravity.
  • polyolefins such as polypropylene (PP) and polyethylene (PE) have a low specific gravity
  • a resin composition capable of forming a lightweight and high-rigidity molded product can be easily obtained by complexing with cellulose fibers.
  • the content of the thermoplastic resin is in the range of 60% by mass to 90% by mass with respect to the total mass of the resin composition.
  • the content of the thermoplastic resin is 60% by mass or more, the weight of the molded product can be reduced.
  • the thermoplastic resin includes polyolefin which is a low specific gravity material.
  • the content of the thermoplastic resin is 90% by mass or less, a decrease in the rigidity of the molded product can be suppressed.
  • the rigidity is, for example, bending rigidity.
  • Cellulose fibers impart rigidity to the molded product.
  • Cellulose fibers can be obtained by treating one or more cellulose-containing raw materials selected from woods, pulps, papers, plant stems / leaves and plant shells with a pulverizer. Specifically, after the cellulose-containing raw material is subjected to rough pulverization using a cutter such as a shredder, if necessary, after being processed by an impact pulverizer or an extruder, or after being dried. Cellulose fibers can be obtained by stirring using a medium pulverizer.
  • the average fiber length of the cellulose fibers is in the range of 0.001 mm to 0.1 mm.
  • the average fiber length is 0.001 mm or more, the rigidity of the molded product can be improved.
  • the average fiber length is 0.1 mm or less, a decrease in dispersibility of cellulose fibers can be suppressed.
  • the average fiber length of a cellulose fiber means the particle size (50% cumulative particle size: d50) in the integrated value 50% in the particle size distribution calculated
  • the content of the cellulose fiber is in the range of 5% by mass to 30% by mass with respect to the total mass of the resin composition.
  • the rigidity of a molded product can be improved because content of a cellulose fiber is 5 mass% or more.
  • content of the cellulose fiber is 30% by mass or less, it is possible to suppress a decrease in impact resistance of the molded product.
  • the dispersant has a function of uniformly dispersing the hydrophobic thermoplastic resin and the hydrophilic cellulose fiber. If it has such a function, a dispersing agent will not be specifically limited.
  • the dispersant is a maleic anhydride modified polyolefin.
  • maleic anhydride-modified polyolefin examples include “Yumex series” manufactured by Sanyo Chemical Industries, Ltd., “PRIEX series” and “SCONA series” manufactured by BYK.
  • the maleic anhydride-modified polyolefin has a hydrophobic polyolefin segment (main skeleton) and a hydrophilic maleic anhydride segment (functional group).
  • the polyolefin segment has an affinity for a thermoplastic resin (particularly polyolefin), and the maleic anhydride segment has an affinity for a cellulose fiber. Therefore, the dispersibility of cellulose fibers can be improved by adding maleic anhydride-modified polyolefin to the thermoplastic resin.
  • the aggregation and the impact resistance of the molded product are improved by suppressing the aggregation due to the interaction between the cellulose fibers in the thermoplastic resin by the maleic anhydride-modified polyolefin.
  • the weight average molecular weight of the maleic anhydride-modified polyolefin is preferably 45000 or less, more preferably 20000 or less. Thereby, the dispersibility of the cellulose fiber can be further improved.
  • the lower limit of the weight average molecular weight of the maleic anhydride-modified polyolefin is 5000.
  • the weight average molecular weight of the maleic anhydride-modified polyolefin is a relative value in terms of polystyrene obtained by gel permeation chromatography (GPC).
  • the content of the dispersant is in the range of 1% by mass to 10% by mass with respect to the total mass of the resin composition.
  • the content of the dispersant is 1% by mass or more, the compatibility between the thermoplastic resin and the cellulose fiber can be improved, and the rigidity of the molded product can be improved.
  • the content of the dispersant is 10% by mass or less, a decrease in the rigidity of the molded product can be suppressed.
  • the elastomer imparts impact resistance to the molded product.
  • the elastomer is roughly classified into a thermosetting elastomer and a thermoplastic elastomer, and is preferably a thermoplastic elastomer.
  • Thermoplastic elastomer is an elastomer that has the property of softening when heated to show fluidity and returning to rubber when cooled.
  • specific examples of thermoplastic elastomers include styrene thermoplastic elastomer (TPS), olefin thermoplastic elastomer (TPO), vinyl chloride thermoplastic elastomer, urethane thermoplastic elastomer (TPU), and ester thermoplastic elastomer (TPC).
  • TPS styrene thermoplastic elastomer
  • TPO olefin thermoplastic elastomer
  • vinyl chloride thermoplastic elastomer vinyl chloride thermoplastic elastomer
  • TPU urethane thermoplastic elastomer
  • TPC ester thermoplastic elastomer
  • Amide-based thermoplastic elastomer (TPA) and butadiene-based thermoplastic elastomer are examples of thermoplastic elastomer.
  • thermoplastic elastomers styrene-based thermoplastic elastomers are preferable because they have excellent low-temperature properties.
  • the styrenic thermoplastic elastomer is a block copolymer having a styrene component and a butadiene component. Since this styrenic thermoplastic elastomer is excellent in compatibility with the thermoplastic resin, it is effective in improving the impact resistance of the molded product.
  • hydrogenated styrene thermoplastic elastomers are more preferable.
  • a hydrogenated styrenic thermoplastic elastomer is a polymer obtained by hydrogenating a block copolymer composed of styrene and butadiene.
  • Preferable examples of the hydrogenated styrene-based thermoplastic elastomer include “Tuff Tech H Series” and “Tuff Tech P Series” manufactured by Asahi Kasei Corporation. These elastomers exhibit rubber elasticity in a wide temperature range.
  • thermoplastic resin is brittle at low temperatures
  • the impact resistance of the molded product can be reduced by lowering the embrittlement temperature of the thermoplastic resin. Can be suppressed. It is particularly effective for modifying polypropylene.
  • the elastomer content is in the range of 3% by mass to 15% by mass with respect to the total mass of the resin composition.
  • the elastomer content is 3% by mass or more, the impact resistance of the molded product can be improved.
  • the elastomer content is 15% by mass or less, a decrease in the rigidity of the molded product can be suppressed.
  • the resin composition can be produced by a dry method as follows. That is, a thermoplastic resin, cellulose fiber, a dispersant and an elastomer are put into a kneading extruder such as a biaxial kneading extruder. The thermoplastic resin is melted in the kneading extruder, cellulose fibers are dispersed in the melted thermoplastic resin by the dispersant, and the elastomer is also dispersed.
  • the cellulose fibers are subjected to a shearing action in the kneading extruder to promote the defibration or dispersion of the agglomerates, and the cellulose fibers are more uniformly dispersed in the thermoplastic resin.
  • the melt-kneaded product extruded from the kneading extruder is, for example, cooled with water to form pellets.
  • the size of the pellet is not particularly limited.
  • a resin composition pellet
  • a known molding method such as injection molding, extrusion molding or cast molding
  • various molded products can be produced. Since the resin composition contains a thermoplastic resin, cellulose fibers, a dispersant, and an elastomer, the obtained molded product has both rigidity and impact resistance.
  • the molded product is suitable as a part of a handy type home appliance, for example.
  • the resin composition according to this embodiment contains a thermoplastic resin, cellulose fibers, and a dispersant.
  • the dispersant includes a plurality of components having different weight average molecular weights.
  • a molded product can be obtained by using a molding method such as injection molding. This molded article combines good appearance, rigidity and impact resistance. The reason is estimated as follows.
  • the lower the molecular weight component of the dispersant the better the compatibility with the cellulose fiber, so that a good appearance can be imparted to the molded product.
  • the dispersant contains only a low molecular weight component, the rigidity and impact resistance of the molded product may be reduced.
  • the higher molecular weight component of the dispersant since the higher molecular weight component of the dispersant has better compatibility with the thermoplastic resin, the rigidity and impact resistance of the molded product can be maintained. On the other hand, if the dispersant only contains a high molecular weight component, the compatibility with the cellulose fiber is not sufficient, and the appearance of the molded product may be deteriorated.
  • the resin composition according to this embodiment contains a thermoplastic resin, cellulose fibers, and a dispersant.
  • the resin composition further contains an elastomer.
  • the form of the resin composition at room temperature is, for example, a spherical, cylindrical, or prismatic pellet.
  • a thermoplastic resin, a cellulose fiber, a dispersing agent, and an elastomer are demonstrated in order.
  • description may be abbreviate
  • thermoplastic resin of the present embodiment is the same as the thermoplastic resin of the first embodiment.
  • the average fiber length of the cellulose fibers is in the range of 0.01 mm or more and 0.1 mm or less.
  • the average fiber length is 0.01 mm or more, the rigidity of the molded product can be improved.
  • the average fiber length is 0.1 mm or less, a decrease in dispersibility of cellulose fibers can be suppressed.
  • the average fiber length of a cellulose fiber means the particle size (50% cumulative particle size: d50) in the integrated value 50% in the particle size distribution calculated
  • the dispersant includes a plurality of components having different weight average molecular weights.
  • Each of the plurality of components basically has a function of dispersing a hydrophobic thermoplastic resin and hydrophilic cellulose fibers. If it has such a function, a dispersing agent will not be specifically limited.
  • the weight average molecular weight is a relative value in terms of polystyrene obtained by gel permeation chromatography (GPC).
  • each molecule of a plurality of components included in the dispersant has one main skeleton and one or more functional groups bonded to the main skeleton.
  • the main skeleton is a portion having hydrophobicity, and is formed of, for example, polypropylene (PP) or polyethylene (PE).
  • the functional group is a portion having hydrophilicity, and is formed of, for example, a carboxylic anhydride such as maleic anhydride.
  • the weight average molecular weight increases as the main skeleton becomes longer, and the weight average molecular weight decreases as the main skeleton becomes shorter.
  • the lower the molecular weight component contained in the dispersant that is, the shorter the main skeleton
  • the dispersant contains only a low molecular weight component, the rigidity and impact resistance of the molded product may be reduced.
  • the higher the molecular weight component contained in the dispersant that is, the longer the main skeleton
  • the higher the molecular weight component contained in the dispersant that is, the longer the main skeleton
  • the higher the molecular weight component contained in the dispersant that is, the longer the main skeleton
  • the higher the molecular weight component contained in the dispersant that is, the longer the main skeleton
  • the higher the molecular weight component contained in the dispersant that is, the longer the main skeleton
  • a plurality of components having different weight average molecular weights are included in the dispersant.
  • the dispersant includes a component having a weight average molecular weight of 10,000 or less (hereinafter also referred to as “low molecular weight component”) and a component having a weight average molecular weight of 20000 or more (hereinafter also referred to as “high molecular weight component”).
  • low molecular weight component a component having a weight average molecular weight of 10,000 or less
  • high molecular weight component a component having a weight average molecular weight of 20000 or more
  • the appearance of the molded product can be further improved by the low molecular weight component.
  • the high molecular weight component can further improve the rigidity and impact resistance of the molded product.
  • the lower limit of the weight average molecular weight of a low molecular weight component is not specifically limited, For example, it is 3000.
  • the upper limit of the weight average molecular weight of a high molecular weight component is not specifically limited, For example, it is 80000.
  • the dispersant is maleic anhydride modified polyolefin.
  • each of the plurality of components contained in the dispersant is preferably a maleic anhydride-modified polyolefin.
  • the mass ratio of the low molecular weight component to the high molecular weight component is in the range of 0.25 or more and 4 or less.
  • the appearance of the molded product can be further improved.
  • the impact resistance of the molded product can be further improved.
  • the elastomer of this embodiment is the same as the elastomer of the first embodiment.
  • the resin composition can be produced by a dry method as follows. That is, a thermoplastic resin, cellulose fiber, and a dispersant are put into a kneading extruder such as a biaxial kneading extruder. Add elastomer as needed. The thermoplastic resin is melted in the kneading extruder, and the cellulose fibers are dispersed in the melted thermoplastic resin by the dispersant.
  • the cellulose fibers are subjected to a shearing action in the kneading extruder to promote the defibration or dispersion of the agglomerates, and the cellulose fibers are more uniformly dispersed in the thermoplastic resin.
  • the melt-kneaded product extruded from the kneading extruder is, for example, cooled with water to form pellets.
  • the size of the pellet is not particularly limited.
  • a resin composition pellet
  • a known molding method such as injection molding, extrusion molding or cast molding
  • various molded products can be produced. Since the resin composition contains a thermoplastic resin, cellulose fibers, and a dispersant, the obtained molded product has good appearance, rigidity, and impact resistance.
  • the molded product is suitable as a part of a handy type home appliance, for example.
  • the resin composition according to the first aspect contains a thermoplastic resin, cellulose fibers, a dispersant, and an elastomer.
  • a molded product having both rigidity and impact resistance can be obtained.
  • the average fiber length of the cellulose fibers is in the range of 0.001 mm to 0.1 mm.
  • the rigidity of the molded product can be improved. Furthermore, the fall of the dispersibility of a cellulose fiber can be suppressed.
  • the resin composition according to the third aspect contains a thermoplastic resin, cellulose fibers, and a dispersant.
  • the dispersant includes a plurality of components having different weight average molecular weights.
  • a molded product having a good appearance, rigidity and impact resistance can be obtained.
  • the average fiber length of the cellulose fibers is in the range of 0.01 mm or more and 0.1 mm or less.
  • the rigidity of the molded product can be improved. Furthermore, the fall of the dispersibility of a cellulose fiber can be suppressed.
  • the dispersant in the resin composition according to the fifth aspect, in the third or fourth aspect, includes a component having a weight average molecular weight of 10,000 or less and a component having a weight average molecular weight of 20,000 or more.
  • the appearance of the molded product can be further improved by the low molecular weight component.
  • the impact resistance of the molded product can be further improved by the high molecular weight component.
  • thermoplastic resin in any one of the first to fifth aspects, is a polyolefin.
  • polyolefins such as polypropylene (PP) and polyethylene (PE) have a low specific gravity
  • a resin composition capable of forming a lightweight and high-rigidity molded article can be easily obtained by compounding with cellulose fibers. be able to.
  • the dispersant is a maleic anhydride-modified polyolefin.
  • the dispersibility of the cellulose fiber can be improved.
  • the maleic anhydride-modified polyolefin has a weight average molecular weight of 45,000 or less.
  • the dispersibility of the cellulose fiber can be further improved.
  • the resin composition according to the ninth aspect further contains an elastomer in any one of the third to eighth aspects.
  • the impact resistance can be further improved.
  • the elastomer is a block copolymer having a styrene component and a butadiene component.
  • This aspect is effective in improving the impact resistance of the molded product.
  • Example 1-1 The following thermoplastic resin, cellulose fiber, dispersant and elastomer were weighed so as to have the ratio (mass%) shown in Table 1 and dry blended. Next, the mixture was melt-kneaded and dispersed with a twin-screw kneading extruder (manufactured by Technobell, model: KZW15TW) at a kneading temperature of 200 ° C. and a discharge rate of 2 kg / hour, and then cooled with water to produce pellets.
  • a twin-screw kneading extruder manufactured by Technobell, model: KZW15TW
  • Thermoplastic resin BC03B (Nippon Polypro Co., Ltd., polypropylene)
  • Cellulose fiber NBKP Celgar (Mitsubishi Paper Co., Ltd., cotton-like softwood pulp, average fiber length 0.05 mm)
  • Dispersant Umex 1001 (manufactured by Sanyo Chemical Industries, Ltd., weight average molecular weight 45000)
  • Elastomer Tuftec H1062 (manufactured by Asahi Kasei Corporation).
  • Example 1-2 Except for weighing to the ratio shown in Table 1, pellets made of the resin composition were produced in the same manner as in Example 1-1.
  • Example 1-3 Except having changed into the thermoplastic resin and dispersing agent which are shown below, the pellet which consists of a resin composition was manufactured like Example 1-1.
  • Thermoplastic resin BC03C (Nippon Polypro Co., Ltd., polypropylene) Dispersant: Umex 100TS (manufactured by Sanyo Chemical Industries, Ltd., weight average molecular weight 9000).
  • Example 1-4 Except for weighing to the ratio shown in Table 1, pellets made of the resin composition were produced in the same manner as in Example 1-3.
  • Example 1-5 Pellets made of the resin composition were produced in the same manner as in Example 1-1 except that the following thermoplastic resins, dispersants, and elastomers were used.
  • Thermoplastic resin BC03C (Nippon Polypro Co., Ltd., polypropylene) Dispersant: PRIEX 25097 (BYK, weight average molecular weight 20000) Elastomer: Tuftec P2000 (Asahi Kasei Corporation).
  • Example 1-6 Except for weighing to the ratio shown in Table 1, pellets made of the resin composition were produced in the same manner as in Example 1-5.
  • Example 1-1 Pellets were produced by a twin-screw kneading extruder in the same manner as in Example 1-1 using only the following thermoplastic resins without using cellulose fibers, a dispersant and an elastomer.
  • Thermoplastic resin BC03C (manufactured by Nippon Polypro Co., Ltd., polypropylene).
  • Example 1-2 The pellets made of the resin composition were changed in the same manner as in Example 1-1 except that the thermoplastic resin shown below was changed and the dispersant and the elastomer were not used and weighed to the ratio shown in Table 1. Manufactured.
  • Thermoplastic resin BC03C (manufactured by Nippon Polypro Co., Ltd., polypropylene).
  • Example 1-3 Pellets made of the resin composition were produced in the same manner as in Example 1-1, except that the thermoplastic resin shown below was changed and the elastomer was not used and weighed so as to have the ratio shown in Table 1.
  • Thermoplastic resin BC03C (manufactured by Nippon Polypro Co., Ltd., polypropylene).
  • Example 1-4 A pellet made of the resin composition was produced in the same manner as in Example 1-1, except that the thermoplastic resin shown below was changed, and the dispersant was not used, and was weighed so as to have the ratio shown in Table 1. .
  • Thermoplastic resin BC03C (manufactured by Nippon Polypro Co., Ltd., polypropylene).
  • the flexural modulus was measured as follows. First, test pieces defined in ISO 178 were prepared using the pellets of the examples and comparative examples. Next, each test piece was subjected to a bending test defined in JIS K 7171. Table 1 shows the measurement results of the flexural modulus.
  • a test piece having a size of 70 mm ⁇ 70 mm ⁇ 2 mmt was prepared using the pellets of each Example and Comparative Example, and held at room temperature of 23 ° C. for 3 hours. Thereafter, a weight of 250 g was dropped from the predetermined height onto the test piece. This operation was performed while changing the height until the test piece was broken. The maximum height at which the test piece was not broken was measured, and the impact resistance was evaluated according to the following criteria. The evaluation results are shown in Table 1.
  • S The maximum height exceeds 160 cm and the impact resistance is extremely high.
  • A The maximum height exceeds 100 cm and is 160 cm or less, and the impact resistance is high.
  • B The maximum height is 60 cm or more and 100 cm or less. Impact resistance is slightly low
  • C The maximum height is less than 60 cm, and impact resistance is low.
  • Example 2-1 The following thermoplastic resin, cellulose fiber, dispersant A (low molecular weight component) and dispersant B (high molecular weight component) were weighed so as to have the ratio (mass%) shown in Table 2 and dry blended. Next, the mixture was melt-kneaded and dispersed with a twin-screw kneading extruder (manufactured by Technobell, model: KZW15TW) at a kneading temperature of 200 ° C. and a discharge rate of 2 kg / hour, and then cooled with water to produce pellets.
  • a twin-screw kneading extruder manufactured by Technobell, model: KZW15TW
  • Thermoplastic resin BC03B (Nippon Polypro Co., Ltd., polypropylene)
  • Cellulose fiber NBKP Celgar (Mitsubishi Paper Co., Ltd., cotton-like softwood pulp, average fiber length 0.05 mm)
  • Dispersant A low molecular weight component: Umex 100TS (manufactured by Sanyo Chemical Industries, Ltd., weight average molecular weight 9000)
  • Dispersant B high molecular weight component
  • Umex 1001 manufactured by Sanyo Chemical Industries, Ltd., weight average molecular weight 45000).
  • Example 2-2 Except for weighing to the ratio shown in Table 2, pellets made of the resin composition were produced in the same manner as in Example 2-1.
  • Example 2-3 Except for weighing to the ratio shown in Table 2, pellets made of the resin composition were produced in the same manner as in Example 2-1.
  • Example 2-4 Resin composition was changed in the same manner as in Example 2-1, except that the thermoplastic resin and dispersant B (high molecular weight component) shown below were changed, an elastomer was added, and the proportions shown in Table 2 were measured. The pellet which consists of a thing was manufactured.
  • Thermoplastic resin BC03C (Nippon Polypro Co., Ltd., polypropylene) Dispersant B (high molecular weight component): PRIEX 25097 (BYK, weight average molecular weight 20000) Elastomer: Tuftec H1062 (manufactured by Asahi Kasei Corporation).
  • Example 2-5 Except for weighing to the ratio shown in Table 2, pellets made of the resin composition were produced in the same manner as in Example 2-4.
  • Example 2-6 Pellets made of the resin composition were produced in the same manner as in Example 2-4 except that the dispersant B (high molecular weight component) shown below was changed and weighed so as to have the ratio shown in Table 2.
  • Dispersant B (high molecular weight component): Umex 1001 (manufactured by Sanyo Chemical Industries, Ltd., weight average molecular weight 45000).
  • Example 2-1 Pellets made of the resin composition were produced in the same manner as in Example 2-1, except that the dispersant B (high molecular weight component) was not used and weighed so as to have the ratio shown in Table 2.
  • Example 2-2 Pellets made of the resin composition were produced in the same manner as in Example 2-1, except that the dispersant A (low molecular weight component) was not used and weighed so as to have the ratio shown in Table 2.
  • Example 2-3 Pellets made of the resin composition were produced in the same manner as in Example 2-4, except that the dispersant B (high molecular weight component) was not used and weighed so as to have the ratio shown in Table 2.
  • Example 2-4 Pellets made of the resin composition were produced in the same manner as in Example 2-4, except that the dispersant A (low molecular weight component) was not used and weighed so as to have the ratio shown in Table 2.
  • test piece having a size of 10 mm ⁇ 10 mm ⁇ 2 mmt was prepared using the pellets of the examples and comparative examples. For each test piece, the number of aggregates having a major axis of 0.1 mm or more was counted, and the quality of the appearance was evaluated according to the following criteria. The evaluation results are shown in Table 2.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Polymers & Plastics (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Cette composition de résine contient une résine thermoplastique, des fibres de cellulose, un dispersant et un élastomère.
PCT/JP2019/017404 2018-05-17 2019-04-24 Composition de résine Ceased WO2019220895A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980032575.2A CN112119127B (zh) 2018-05-17 2019-04-24 树脂组合物

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2018095648A JP7213459B2 (ja) 2018-05-17 2018-05-17 樹脂組成物
JP2018-095648 2018-05-17
JP2018134472A JP2020012050A (ja) 2018-07-17 2018-07-17 樹脂組成物
JP2018-134472 2018-07-17

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JP2012107212A (ja) * 2010-10-19 2012-06-07 Furukawa Electric Co Ltd:The 難燃性樹脂組成物及びそれを用いた成形物品
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JPWO2024014546A1 (fr) * 2022-07-15 2024-01-18

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