WO2014157099A1 - 繊維強化複合材料の製造方法 - Google Patents
繊維強化複合材料の製造方法 Download PDFInfo
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- WO2014157099A1 WO2014157099A1 PCT/JP2014/058100 JP2014058100W WO2014157099A1 WO 2014157099 A1 WO2014157099 A1 WO 2014157099A1 JP 2014058100 W JP2014058100 W JP 2014058100W WO 2014157099 A1 WO2014157099 A1 WO 2014157099A1
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- 0 C*(C*C(*)C1*)C(*)C(*)C1(c(cc1)ccc1O)c(cc1)ccc1O Chemical compound C*(C*C(*)C1*)C(*)C(*)C1(c(cc1)ccc1O)c(cc1)ccc1O 0.000 description 1
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/24—Di-epoxy compounds carbocyclic
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
- C08G59/621—Phenols
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/241—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres
- C08J5/243—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres using carbon fibres
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/249—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs characterised by the additives used in the prepolymer mixture
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/35—Heterocyclic compounds having nitrogen in the ring having also oxygen in the ring
- C08K5/353—Five-membered rings
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
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- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J2463/02—Polyglycidyl ethers of bis-phenols
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2477/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2477/06—Polyamides derived from polyamines and polycarboxylic acids
Definitions
- the present invention relates to a method for producing a fiber-reinforced composite material.
- the present invention particularly relates to a method for producing a fiber-reinforced composite material for aircraft use, marine use, automobile use, sports use, and other general industrial uses.
- Fiber-reinforced composite materials composed of various fibers and matrix resins are widely used for aircraft, ships, automobiles, sporting goods and other general industrial applications because of their excellent mechanical properties. In recent years, the application range of fiber reinforced composite materials has been expanded as the use results have been increased.
- a material using a benzoxazine resin is proposed in, for example, Patent Documents 1 and 2.
- the benzoxazine resin has excellent moisture resistance and heat resistance, but has a problem of poor toughness, and has been devised to compensate for its drawbacks by blending epoxy resin and various resin fine particles.
- An object of the present invention is to use a benzoxazine resin having excellent moisture resistance and heat resistance, and at the same time, can achieve excellent CAI and flexural modulus at a high level and maintain a high glass transition temperature of the resin material. It is providing the manufacturing method of the fiber reinforced composite material which can obtain a fiber reinforced composite material.
- the present invention provides two or more (A) benzoxazine resin, (B) epoxy resin, and (C) molecules impregnated between the reinforcing fibers and the fibers of the reinforcing fibers.
- the present inventors consider the reason why CAI and flexural modulus can be improved by the above method as follows.
- (A) Due to the presence of the compound having a phenolic hydroxyl group, which is a curing agent for the benzoxazine resin, the melting point of the polyamide resin particles is lowered.
- the melting point of the polyamide resin particles becomes too low, the polyamide resin particles are easily melted when the thermosetting resin is cured when the fiber reinforced composite material is produced using the prepreg, and the melted polyamide resin particles are strengthened. It becomes easy to enter the fiber layer.
- the polyamide resin particles having the specific particle diameter and the melting point are combined with the (C) curing agent, and the temperature is lower than the melting point of the polyamide resin particles that is lowered in the surface layer in the first step.
- the polyamide resin particles can be made difficult to flow by consuming part of the curing agent while curing part of the resin.
- the polyamide resin can be sufficiently present in the cured resin layer between the reinforcing fiber layers, and the effect of improving the CAI and the flexural modulus can be sufficiently obtained.
- (D) the polyamide resin particles slightly melt in the second step also contributes to the improvement of CAI and flexural modulus.
- the surface layer is composed of 65 to 80 parts by mass of component (A), 20 to 35 parts by mass of component (B), and 100 parts by mass of the total of component (A) and component (B). It is preferable to contain 5 to 20 parts by weight of component ()) and 15 to 45 parts by weight of component (D).
- the component (D) preferably includes polyamide 12 resin particles, polyamide 1010 resin particles, or polyamide 11 resin particles.
- the manufacturing method of the fiber reinforced composite material which can obtain a fiber reinforced composite material can be provided.
- the fiber-reinforced composite material obtained by the present invention can be suitably used for aircraft applications, marine applications, automobile applications, sports applications, and other general industrial applications, and is particularly useful for aircraft applications.
- the method for producing a fiber-reinforced composite material includes (A) a benzoxazine resin, (B) an epoxy resin, and (C) 2 molecules in a molecule impregnated between reinforcing fibers and the fibers of the reinforcing fibers. And (A) a benzoxazine resin and (B) an epoxy provided on at least one surface of the reinforcing fiber layer, and a resin composition containing a curing agent having at least one phenolic hydroxyl group.
- the melting point of the polyamide resin particles refers to measuring the temperature at the top of the obtained endothermic peak by increasing the temperature from 25 ° C. at a rate of 10 ° C./min using a differential calorimeter (DSC). This is the value obtained by.
- the melting point of the polyamide resin particles measured in the composition constituting the surface layer refers to the composition constituting the surface layer containing the polyamide resin particles, from 25 ° C. to 10 ° C. using a differential calorimeter (DSC). The temperature is increased at a rate of / min, and the temperature at the top of the obtained endothermic peak is indicated.
- the first step includes the steps of measuring the melting point M 1 ° C. of the polyamide resin particles in the composition constituting the surface layer, the prepreg was stacked at a temperature below 120 ° C. or higher M 1 ° C. Heating may be included, or heating may be performed at a temperature of 120 ° C. or more and less than M 1 ° C. based on M 1 measured in advance.
- FIG. 1 is a schematic cross-sectional view for explaining a prepreg used in this embodiment.
- a prepreg 10 shown in FIG. 1A includes a reinforcing fiber layer 3 including a reinforcing fiber 1 and a resin composition 2 impregnated between the fibers of the reinforcing fiber 1, and a surface of the reinforcing fiber layer 3. And provided with a surface layer 6 a containing the polyamide resin particles 4 and the resin composition 5. In the surface layer 6 a of the prepreg 10, the polyamide resin particles 4 are included in the layer of the resin composition 5.
- 1B has a surface in which polyamide resin particles 4 are attached to the surface of the resin composition 5 on the side opposite to the reinforcing fiber layer 3 instead of the surface layer 6a in the prepreg 10.
- a configuration similar to that of the prepreg 10 is provided except that the layer 6b is provided.
- the resin composition 2 contains (A) a benzoxazine resin, (B) an epoxy resin, and (C) a curing agent having two or more phenolic hydroxyl groups in the molecule.
- the surface layers 6a and 6b are (A) a benzoxazine resin, (B) an epoxy resin, (C) a curing agent having two or more phenolic hydroxyl groups in the molecule, and (D) an average particle size of 5 to Polyamide resin particles having a melting point of 175 to 210 ° C. and 50 ⁇ m are contained.
- component (A) As the (A) benzoxazine resin (hereinafter sometimes referred to as component (A)) used in the present invention, a compound having a benzoxazine ring represented by the following general formula (A-1) can be mentioned.
- R 5 represents a chain alkyl group having 1 to 12 carbon atoms, a cyclic alkyl group having 3 to 8 carbon atoms, an aryl group having 6 to 14 carbon atoms, or an alkyl group having 1 to 12 carbon atoms.
- a chain alkyl group or an aryl group substituted with a halogen is shown.
- a hydrogen atom may be bonded to the bond.
- Examples of the chain alkyl group having 1 to 12 carbon atoms include a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, an isobutyl group, and a t-butyl group.
- Examples of the cyclic alkyl group having 3 to 8 carbon atoms include a cyclopentyl group and a cyclohexyl group.
- Examples of the aryl group having 6 to 14 carbon atoms include a phenyl group, a 1-naphthyl group, a 2-naphthyl group, a phenanthryl group, and a biphenyl group.
- Examples of the chain alkyl group having 1 to 12 carbon atoms or the aryl group substituted with halogen include, for example, o-tolyl group, m-tolyl group, p-tolyl group, xylyl group, o-ethylphenyl group, m-ethyl. Examples thereof include a phenyl group, p-ethylphenyl group, ot-butylphenyl group, mt-butylphenyl group, pt-butylphenyl group, o-chlorophenyl group, and o-bromophenyl group.
- R 5 is preferably a methyl group, an ethyl group, a propyl group, a phenyl group, or an o-methylphenyl group among the above examples because it gives good handleability.
- L represents an alkylene group or an arylene group.
- benzoxazine resin of the component (A) for example, a monomer represented by the following formula, an oligomer obtained by polymerizing several monomers of the monomer, and at least one monomer represented by the following formula are different from these monomers.
- a reaction product with a compound having a benzoxazine ring having a structure is preferred.
- the component (A) is excellent in flame retardancy because the benzoxazine ring undergoes ring-opening polymerization to form a skeleton similar to the phenol resin. Further, excellent mechanical properties such as low water absorption and high elastic modulus can be obtained from the dense structure.
- a component can be used individually by 1 type or in combination of 2 or more types.
- Epoxy resin (hereinafter also referred to as component (B)) used in the present invention is blended as a component for controlling the viscosity of the composition and enhancing the curability of the composition.
- component (B) for example, an epoxy resin having a precursor such as an amine, a phenol, a carboxylic acid, or an intramolecular unsaturated carbon is preferable.
- epoxy resins having amines as precursors include tetraglycidyldiaminodiphenylmethane, glycidyl compounds of xylenediamine, triglycidylaminophenol, and glycidylanilines, their respective positional isomers, and substitution with alkyl groups or halogens. It is done.
- the complex viscoelastic modulus ⁇ * at 25 ° C. obtained by a dynamic viscoelasticity measuring device described later is described as the viscosity.
- triglycidylaminophenol Commercially available products of triglycidylaminophenol include, for example, “jER” 630 (viscosity: 750 mPa ⁇ s) (manufactured by Mitsubishi Chemical Corporation), “Araldite” MY0500 (viscosity: 3500 mPa ⁇ s), MY0510 (viscosity: 600 mPa ⁇ s). s) (manufactured by Huntsman) and ELM100 (viscosity: 16000 mPa ⁇ s) (manufactured by Sumitomo Chemical).
- Examples of commercially available glycidyl anilines include GAN (viscosity: 120 mPa ⁇ s) and GOT (viscosity: 60 mPa ⁇ s) (manufactured by Nippon Kayaku Co., Ltd.).
- Examples of the glycidyl ether type epoxy resin having phenol as a precursor include, for example, bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, epoxy resin having a biphenyl skeleton, phenol novolak type epoxy resin, cresol novolak type Epoxy resin, resorcinol type epoxy resin, epoxy resin having naphthalene skeleton, trisphenylmethane type epoxy resin, phenol aralkyl type epoxy resin, dicyclopentadiene type epoxy resin, diphenylfluorene type epoxy resin and various isomers and alkyl groups thereof, Examples include halogen substitution products. Moreover, an epoxy resin obtained by modifying an epoxy resin having a phenol precursor with urethane or isocyanate is also included in this type.
- liquid bisphenol A type epoxy resins examples include “jER” 825 (viscosity: 5000 mPa ⁇ s), “jER” 826 (viscosity: 8000 mPa ⁇ s), and “jER” 827 (viscosity: 10,000 mPa ⁇ s).
- JER 828 viscosity: 13000 mPa ⁇ s) (manufactured by Mitsubishi Chemical Corporation), “Epiclon” (registered trademark, the same shall apply hereinafter) 850 (viscosity: 13000 mPa ⁇ s) (manufactured by DIC Corporation), “ “Epototo” (registered trademark, the same applies hereinafter) YD-128 (viscosity: 13000 mPa ⁇ s) (manufactured by Nippon Steel & Sumitomo Chemical Co., Ltd.), DER-331 (viscosity: 13000 mPa ⁇ s), DER-332 (viscosity: 5000 mPa ⁇ s) (Made by Dow Chemical Company).
- Examples of commercially available solid or semi-solid bisphenol A type epoxy resins include “jER” 834, “jER” 1001, “jER” 1002, “jER” 1003, “jER” 1004, “jER” 1004AF, and “jER”. "1007", “jER” 1009 (manufactured by Mitsubishi Chemical Corporation).
- liquid bisphenol F-type epoxy resins examples include “jER” 806 (viscosity: 2000 mPa ⁇ s), “jER” 807 (viscosity: 3500 mPa ⁇ s), and “jER” 1750 (viscosity: 1300 mPa ⁇ s).
- Solid bisphenol F type epoxy resin examples include, for example, 4004P, “jER” 4007P, “jER” 4009P (manufactured by Mitsubishi Chemical Corporation), “Epototo” YDF2001, “Epototo” YDF2004 (all Nippon Steel Sumitomo Chemical) Product).
- Examples of the bisphenol S type epoxy resin include EXA-1515 (manufactured by DIC Corporation).
- Examples of commercially available epoxy resins having a biphenyl skeleton include “jER” YX4000H, “jER” YX4000, “jER” YL6616 (manufactured by Mitsubishi Chemical Corporation), NC-3000 (manufactured by Nippon Kayaku Co., Ltd.). ).
- phenol novolac epoxy resins examples include “jER” 152, “jER” 154 (manufactured by Mitsubishi Chemical Corporation), “Epicron” N-740, “Epicron” N-770, “Epicron” N -775 (manufactured by DIC Corporation).
- cresol novolac type epoxy resins examples include “Epiclon” N-660, “Epicron” N-665, “Epicron” N-670, “Epicron” N-673, “Epicron” N-695 (above, DIC Corporation), EOCN-1020, EOCN-102S, EOCN-104S (above, Nippon Kayaku Co., Ltd.).
- Examples of commercially available resorcinol type epoxy resins include “Denacol” (registered trademark, hereinafter the same) EX-201 (viscosity: 250 mPa ⁇ s) (manufactured by Nagase ChemteX Corporation).
- Examples of commercially available epoxy resins having a naphthalene skeleton include “Epiclon” HP4032 (manufactured by DIC Corporation), NC-7000, NC-7300 (manufactured by Nippon Kayaku Co., Ltd.).
- trisphenylmethane type epoxy resins examples include TMH-574 (manufactured by Sumitomo Chemical Co., Ltd.).
- dicyclopentadiene type epoxy resins include, for example, “Epiclon” HP7200, “Epicron” HP7200L, “Epicron” HP7200H (above, manufactured by DIC Corporation), “Tactix” (registered trademark) 558 (manufactured by Huntsman) XD-1000-1L, XD-1000-2L (Nippon Kayaku Co., Ltd.).
- Examples of commercially available urethane and isocyanate-modified epoxy resins include AER4152 (produced by Asahi Kasei E-Materials Co., Ltd.) having an oxazolidone ring.
- Examples of the epoxy resin using carboxylic acid as a precursor include glycidyl compounds of phthalic acid, glycidyl compounds of hexahydrophthalic acid and dimer acid, and various isomers thereof.
- diglycidyl phthalate examples include, for example, “Epomic” (registered trademark, the same applies hereinafter) R508 (viscosity: 4000 mPa ⁇ s) (manufactured by Mitsui Chemicals), “Denacol” EX-721 (viscosity: 980 mPas). S) (manufactured by Nagase ChemteX Corporation).
- hexahydrophthalic acid diglycidyl ester Commercially available products of hexahydrophthalic acid diglycidyl ester include, for example, “Epomic” R540 (viscosity: 350 mPa ⁇ s) (manufactured by Mitsui Chemicals), AK-601 (viscosity: 300 mPa ⁇ s) (Nippon Kayaku Co., Ltd.) Co., Ltd.).
- dimer acid diglycidyl esters examples include “jER” 871 (viscosity: 650 mPa ⁇ s) (manufactured by Mitsubishi Chemical Corporation), “Epototo” YD-171 (viscosity: 650 mPa ⁇ s) (Nippon Sumitomo Chemical) Product).
- Examples of the epoxy resin having an intramolecular unsaturated carbon as a precursor include an alicyclic epoxy resin.
- the alicyclic epoxy resin include (3 ′, 4′-epoxycyclohexane) methyl-3,4-epoxycyclohexanecarboxylate, (3 ′, 4′-epoxycyclohexane) octyl-3,4-epoxycyclohexanecarboxylate, 1-methyl-4- (2-methyloxiranyl) -7-oxabicyclo [4.1.0] heptane.
- an epoxy resin that is liquid at 25 ° C. can be blended from the viewpoint of tack and drape.
- the viscosity at 25 ° C. exceeds 20000 mPa ⁇ s, tack and drape properties may be deteriorated.
- a solid epoxy resin can be blended at 25 ° C.
- an epoxy resin having a high aromatic content is preferable, and examples thereof include an epoxy resin having a biphenyl skeleton, an epoxy resin having a naphthalene skeleton, and a phenol aralkyl type epoxy resin.
- a component can be used individually by 1 type or in combination of 2 or more types.
- Examples of the curing agent having two or more phenolic hydroxyl groups in the molecule (C) used in the present invention include polyfunctional phenols such as bisphenols.
- R 1 , R 2 , R 3 and R 4 represent a hydrogen atom or a hydrocarbon group, and when R 1 , R 2 , R 3 or R 4 is a hydrocarbon group, Is a linear or branched alkyl group having 1 to 4 carbon atoms, or adjacent R 1 and R 2 or adjacent R 3 and R 4 are combined to form a substituted or unsubstituted aromatic group having 6 to 10 carbon atoms. A ring or a substituted or unsubstituted alicyclic structure having 6 to 10 carbon atoms is formed, and x represents 0 or 1. ]
- Examples of the curing agent represented by the general formula (C-1) include compounds represented by the following formula.
- bisphenol A bisphenol F
- thiobisphenol hereinafter sometimes referred to as TDP
- 9,9-bis (4-hydroxyphenyl) fluorene hereinafter, it may be referred to as BPF
- 1,1-bis (4-hydroxyphenyl) cyclohexane hereinafter also referred to as BPC
- a component can be used individually by 1 type or in combination of 2 or more types.
- a curing agent other than the component (C) can be used in combination.
- the curing agent that can be used in combination include tertiary aromatic amines such as N, N-dimethylaniline, tertiary aliphatic amines such as triethylamine, imidazole derivatives, and pyridine derivatives. These can be used individually by 1 type or in combination of 2 or more types.
- Polyamide resin particles having an average particle diameter of 5 to 50 ⁇ m and a melting point of 175 to 210 ° C. (hereinafter sometimes referred to as component (D)) used in the present invention include polyamide 12 resin particles and polyamide 1010. Examples include resin particles and polyamide 11 resin.
- the average particle diameter means an average value of the lengths of the long diameters of each particle measured with 100 particles arbitrarily selected from particles enlarged 200 to 500 times with a scanning electron microscope (SEM). To do.
- the polyamide 12 resin refers to a polyamide resin obtained by ring-opening polymerization of lauryl lactam
- the polyamide 1010 resin refers to a polyamide resin obtained by polycondensation of sebacic acid and decamethylenediamine
- the polyamide 11 resin refers to undecane lactam. Refers to a ring-opening polymerized polyamide resin.
- the resin particles are preferably spherical particles from the viewpoint of not reducing the flow characteristics of the resin composition containing the particles, but may be non-spherical particles.
- polyamide 1010 resin particles used in the present invention examples thereof include “Vestamide R Terra DS” (registered trademark, manufactured by Daicel Evonik Co., Ltd.).
- polyamide 11 resin particles used in the present invention examples thereof include “Rilsan PA11” (registered trademark, manufactured by Arkema).
- the average particle diameter of the polyamide resin particles is preferably 5 to 50 ⁇ m, more preferably 10 to 30 ⁇ m from the viewpoint of controlling the thickness of the surface layer.
- the content of the component (A) and the component (B) in the resin composition 2 is such that when the total of the component (A) and the component (B) is 100 parts by mass, the component (A) 65 to 80 parts by mass, component (B) is preferably 20 to 35 parts by mass, component (A) is preferably 65 to 78 parts by mass, and component (B) is more preferably 22 to 35 parts by mass, More preferably, the component (A) is 70 to 78 parts by mass and the component (B) is 22 to 30 parts by mass.
- the content ratio of the component (A) is less than 65 parts by mass, that is, when the content ratio of the component (B) exceeds 35 parts by mass, the elastic modulus and water resistance of the resulting fiber-reinforced composite tend to decrease. In addition, the glass transition temperature of the cured resin tends to decrease.
- the content of the component (C) in the resin composition 2 is preferably 5 to 20 parts by mass when the total of the components (A) and (B) is 100 parts by mass, 15 parts by mass is more preferable.
- the content of the component (C) is less than 5 parts by mass, it tends to be difficult to sufficiently increase the CAI and flexural modulus of the fiber-reinforced composite material.
- the content exceeds 20 parts by mass, the glass transition of the cured product Mechanical properties such as temperature tend to decrease.
- the contents of the component (A) and the component (B) in the surface layers 6a and 6b are the components (A) when the total of the components (A) and (B) is 100 parts by mass. Is preferably 65 to 80 parts by mass, the component (B) is preferably 20 to 35 parts by mass, the component (A) is preferably 65 to 78 parts by mass, and the component (B) is more preferably 22 to 35 parts by mass. More preferably, the component (A) is 70 to 78 parts by mass and the component (B) is 22 to 30 parts by mass.
- the content ratio of the component (A) is less than 65 parts by mass, that is, when the content ratio of the component (B) exceeds 35 parts by mass, the elastic modulus and water resistance of the resulting fiber-reinforced composite tend to decrease. In addition, the glass transition temperature of the cured resin tends to decrease.
- the content of the component (C) in the surface layers 6a and 6b is preferably 5 to 20 parts by mass when the total of the components (A) and (B) is 100 parts by mass. More preferred is 15 parts by mass.
- the content of the component (C) is less than 5 parts by mass, it tends to be difficult to sufficiently increase the CAI and flexural modulus of the fiber-reinforced composite material.
- the content exceeds 20 parts by mass, the glass transition of the cured product Mechanical properties such as temperature tend to decrease.
- the content of the component (D) in the surface layers 6a and 6b is preferably 15 to 45 parts by mass when the total of the components (A) and (B) is 100 parts by mass, More preferably, it is ⁇ 40 parts by mass.
- the content of the component (D) is less than 15 parts by mass, it tends to be difficult to sufficiently increase the CAI and the flexural modulus in the fiber-reinforced composite material.
- the content exceeds 45 parts by mass, the flexural modulus decreases. There is a tendency.
- the surface layers 6a and 6b in the prepreg of the present embodiment refer to the space between the prepreg surface and the reinforcing fibers of the reinforcing fiber layer, and the content of the component (D) in the surface layer is, for example, from the prepreg surface to the reinforcing fiber layer. It can be calculated based on the contents of the component (A), the component (B), and the component (C) detected up to the reinforcing fiber.
- the surface layer and the reinforcing fiber layer can be blended with other components such as (E) a toughness improver as long as the physical properties are not impaired.
- a toughness improver examples include phenoxy resins and polyether sulfones.
- nanocarbon examples include carbon nanotubes, fullerenes, and derivatives thereof.
- flame retardant examples include phosphoric acid such as red phosphorus, triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, xylenyl diphenyl phosphate, resorcinol bisphenyl phosphate, bisphenol A bisdiphenyl phosphate, etc.
- examples thereof include esters and boric acid esters.
- the mold release agent examples include silicone oil, stearic acid ester, carnauba wax and the like.
- the reinforcing fiber referred to in the present invention glass fiber, carbon fiber, graphite fiber, aramid fiber, boron fiber, alumina fiber, silicon carbide fiber and the like can be used. Two or more of these fibers may be mixed and used. In order to obtain a molded product that is lighter and more durable, it is preferable to use carbon fiber or graphite fiber, and it is more preferable to use carbon fiber.
- the carbon fiber used in the present invention either a PAN-based carbon fiber or a pitch-based carbon fiber can be used.
- the tensile elastic modulus of the carbon fiber or graphite fiber in the strand tensile test is preferably 150 to 650 GPa, more preferably 200 to 550 GPa, more preferably 230 to 500 GPa.
- the strand tensile test refers to a test performed based on JIS R7601 (1986) after impregnating an epoxy resin into a bundle of carbon fiber or graphite fiber and curing at 130 ° C. for 35 minutes.
- the form of the reinforcing fiber is not particularly limited.
- the long fiber, tow, woven fabric, mat, knit, braid, and a length of less than 10 mm are aligned in one direction. It is possible to use short fibers that are chopped in the same manner.
- the long fiber is a single fiber or a fiber bundle substantially continuous for 10 mm or more.
- a short fiber is a fiber bundle cut into a length of less than 10 mm.
- an array in which reinforcing fiber bundles are aligned in a single direction like the prepreg of this embodiment is most suitable.
- a (woven fabric) arrangement is also applicable.
- the amount of reinforcing fibers per unit area is preferably 25 to 3000 g / m 2 , and more preferably 70 to 3000 g / m 2 .
- the amount of reinforcing fibers is less than 25 g / m 2, it is necessary to increase the number of laminated layers in order to obtain a predetermined thickness when forming a fiber-reinforced composite material, and the work may be complicated.
- the amount of reinforcing fibers exceeds 3000 g / m 2 , the prepreg drapability tends to deteriorate. If the prepreg is flat or simple, the amount of reinforcing fibers may exceed 3000 g / m 2 .
- the fiber content in the prepreg is preferably 30 to 90% by mass, more preferably 35 to 85% by mass, and still more preferably 40 to 80% by mass. If the content is less than 30% by mass, the amount of resin is too large to obtain the advantages of a fiber reinforced composite material excellent in specific strength and specific elastic modulus, or heat generation during curing when molding the fiber reinforced composite material. The amount can be too large. When the content exceeds 90% by mass, poor resin impregnation occurs, and the resulting composite material tends to have many voids.
- FIG. 2 is an embodiment of a method for manufacturing the prepreg 10 according to the present embodiment described above.
- a reinforcing fiber bundle 7 in which reinforcing fibers 1 are aligned in one direction is prepared (a), and the reinforcing resin bundle 7 is impregnated with the first resin composition 2 containing the components (A) to (C).
- the reinforcing fiber layer 3 is formed (b), and both surfaces of the reinforcing fiber layer 3 are impregnated with the second resin composition containing the components (A) to (C) and the component (D).
- the prepreg 10 is obtained by forming 6a (c).
- a reinforcing fiber bundle 7 in which reinforcing fibers 1 are aligned in one direction is prepared (a), and a resin composition containing the above components (A) to (D) on both sides of the reinforcing fiber 7 is prepared.
- the surface layer 6a composed of the resin composition 2 containing the component (D) 4 and the components (A) to (C) not impregnated in the fiber is formed, and the prepreg 11 is obtained (c) .
- the prepreg 12 shown in FIG. 1B includes, for example, the component (D) on the surface of the reinforcing fiber bundle impregnated with the resin composition after the reinforcing fiber bundle is impregnated with the resin composition containing the components (A) to (C). Can be produced by spraying.
- Each resin composition impregnated into the reinforcing fiber bundle is kneaded with the above components (A) to (C) and other components as necessary, or the above components (A) to (D) and other components as necessary. Can be prepared.
- the kneading method of the resin composition is not particularly limited, and for example, a kneader, a planetary mixer, a twin screw extruder, or the like is used.
- a kneader a planetary mixer, a twin screw extruder, or the like is used.
- the particles are previously diffused into the liquid resin component by a homomixer, three rolls, a ball mill, a bead mill, an ultrasonic wave, or the like.
- heating / cooling, pressurization / depressurization may be performed as necessary at the time of mixing with the matrix resin or pre-diffusion of particles.
- the viscosity of the resin composition is preferably 10 to 20000 Pa ⁇ s at 50 ° C. from the viewpoint of precursor film production. More preferably, it is 10 to 10,000 Pa ⁇ s, and most preferably 50 to 6000 Pa ⁇ s. If it is less than 10 Pa ⁇ s, the tackiness of the resin composition becomes high and it may be difficult to apply. On the other hand, if it exceeds 20000 Pa ⁇ s, it becomes semi-solid and coating becomes difficult.
- Examples of the method of impregnating the resin composition include a wet method in which the resin composition is dissolved in a solvent such as methyl ethyl ketone and methanol to lower the viscosity and impregnated, a hot melt method in which the viscosity is reduced by heating and impregnated (dry method), and the like. Can be mentioned.
- the wet method is a method in which a reinforcing fiber is immersed in a solution of a resin composition, then pulled up, and the solvent is evaporated using an oven or the like.
- the hot melt method is a method in which a reinforcing fiber is impregnated directly with a resin composition whose viscosity is reduced by heating, or a film is prepared by once coating a resin composition on a release paper or the like, and then both sides of the reinforcing fiber.
- it is a method of impregnating a reinforcing fiber with a resin by overlapping the film from one side and heating and pressing.
- the hot melt method is preferable because substantially no solvent remains in the prepreg.
- the prepreg according to the present invention can be made into a fiber-reinforced composite material by, for example, a method of heat-curing a resin while applying pressure to the laminate after lamination.
- resin curing is performed by the first step and the second step.
- FIG. 4 is a schematic diagram illustrating an example of a curing profile.
- the melting point of the polyamide resin particles, as measured in the composition constituting the surface layer is taken as M 1 ° C., heating at a temperature below M 1 ° C. 120 ° C. or higher To do.
- the heating temperature refers to the temperature on the prepreg surface.
- the holding time here can be 10 minutes to 6 hours, preferably 30 minutes to 3 hours.
- the temperature rise up to the first step (a in FIG. 4) is preferably performed at a rate of 0.3 to 3 ° C./min, and preferably at a rate of 0.5 to 2.0 ° C./min. More preferred.
- the pressure during heating is preferably 0.2 to 1.0 MPa, more preferably 0.3 to 0.8 MPa.
- the components constituting the surface layer are blended so that M 1 is 155 ° C. or less, and 120 to 155 ° C. and M 1 It is preferable to perform the heating at a temperature lower than 0 ° C. M 1 is, for example, can be adjusted by changing the amount of the curing agent.
- the components constituting the surface layer are blended so that M 1 is 175 ° C. or less, and 120 to 175 ° C. and Heating is preferably performed at less than M 1 ° C.
- M 1 is, for example, can be adjusted by changing the amount of the curing agent.
- the polyamide resin particles contained in the surface layer are polyamide 11 resin particles having a melting point of 180 to 195 ° C.
- the components constituting the surface layer are blended so that M 1 is 160 ° C. or less, and 120 to 160 ° C. and Heating is preferably performed at less than M 1 ° C.
- M 1 is, for example, can be adjusted by changing the amount of the curing agent.
- Examples of methods for applying heat and pressure include a press molding method, an autoclave molding method, a bagging molding method, a wrapping tape method, and an internal pressure molding method.
- the wrapping tape method is a method of winding a prepreg on a mandrel or other core metal to form a tubular body made of a fiber reinforced composite material, and is a method suitable for producing a rod-shaped body such as a golf shaft or a fishing rod. . More specifically, a prepreg is wound around a mandrel, a wrapping tape made of a thermoplastic film is wound around the outside of the prepreg for fixing and applying pressure, and the resin is heated and cured in an oven, and then a cored bar. This is a method for extracting a tube to obtain a tubular body.
- a preform obtained by winding a prepreg on an internal pressure applying body such as a tube made of a thermoplastic resin is set in a mold, and then a high pressure gas is introduced into the internal pressure applying body to apply pressure and at the same time
- the mold is heated and molded.
- This method is preferably used when molding a complicated shape such as a golf shaft, a bad, a racket such as tennis or badminton.
- the temperature is further raised, and a second step is performed in which the resin is cured by heating at a temperature of M 1 ° C or higher.
- the temperature rise (b in FIG. 4) up to the second step is preferably performed at a rate of 0.3 to 3.0 ° C./min, and is performed at a rate of 0.5 to 2.0 ° C./min. It is more preferable.
- the temperature at this time is preferably 160 to 200 ° C., more preferably 170 to 190 ° C.
- the holding time can be 10 minutes to 6 hours, preferably 30 minutes to 3 hours.
- the temperature can be lowered at a rate of -0.3 to -3.0 ° C / min.
- FIG. 5 is a schematic cross-sectional view for explaining the fiber-reinforced composite material according to the present invention.
- a fiber-reinforced composite material 100 shown in FIG. 5 includes reinforcing fibers 1, a cured resin 8, and polyamide resin particles 4.
- the fiber reinforced composite material 100 can be obtained by laminating a plurality of any one of the prepregs 10, 11 and 12 and performing the first step and the second step according to the present invention described above.
- the capacity ratio of C 1 in the total amount of the polyamide resin content C 1 contained in the cured resin layer between the reinforcing fiber layers and the polyamide resin content C 2 contained in the reinforcing fiber layer ⁇ C 1 / (C 1 + C 2 ) ⁇ ⁇ 100 is preferably 80% by volume or more, and more preferably 90% by volume or more.
- the content of the polyamide resin is determined by analyzing the cut surface when the fiber reinforced composite material is cut on a surface orthogonal to the direction in which any reinforcing fiber in the fiber reinforced composite material is stretched by microscopic observation, and performing image analysis. This is determined by observing the distribution of the resin.
- the fiber reinforced composite material according to the present invention preferably has a compressive strength after impact (CAI) measured in accordance with SACMA SRM 2R-94 of 210 MPa or more, and more preferably 220 MPa or more.
- CAI compressive strength after impact
- the glass transition temperature of the cured resin is preferably 180 ° C. or higher, and more preferably 190 ° C. or higher.
- the fiber-reinforced composite material according to the present invention having the above physical properties is suitably used for railway vehicles, aircraft, building members, and other general industrial applications.
- Example 1 to 10 Comparative Examples 1 and 2
- the raw material is heat-mixed in the ratio shown in Tables 1 and 2, the first resin composition not containing particles (the “first” composition in the table), and the first containing particles. 2 resin compositions ("second" composition in the table) were obtained.
- the raw materials used here are as shown below.
- PA1010 Polyamide 1010, average particle size 20 ⁇ m, manufactured by Daicel Evonik)
- the obtained first and second resin compositions were respectively applied to a release paper at 70 to 100 ° C. to obtain an 18 g / m 2 first resin film and a 25 g / m 2 second resin film. .
- the obtained first resin film was supplied from above and below the carbon fibers aligned in one direction and impregnated between the fibers to form a carbon fiber layer.
- the 2nd resin film was laminated from the upper and lower sides of the carbon fiber layer, the surface layer was formed, and the prepreg was produced.
- the amount of carbon fiber per unit area of this prepreg was 150 g / m 2
- the total resin composition amount (matrix resin amount) in the carbon fiber layer and the surface layer was 86 g / m 2 .
- the obtained prepreg was quasi-isotropically laminated with 32 plies in a [+ 45 ° / 0 ° / ⁇ 45 ° / 90 °] 4 s configuration, and the pressure was 0.6 MPa at room temperature to 2 ° C./min.
- the first step of holding at the same temperature for the time shown in Tables 1 and 2 was performed.
- heat curing was performed at the same temperature for 2 hours to obtain CFRP.
- the temperature was raised from room temperature to 180 ° C. at a pressure of 0.6 MPa and 2 ° C./min, and then heat-cured at the same temperature for 2 hours to obtain CFRP.
- the fiber-reinforced composite material obtained by the present invention can be suitably used for aircraft applications, marine applications, automobile applications, sports applications, and other general industrial applications, and is particularly useful for aircraft applications.
Abstract
Description
[式(A-1)中、R5は、炭素数1~12の鎖状アルキル基、炭素数3~8の環状アルキル基、炭素数6~14のアリール基、又は炭素数1~12の鎖状アルキル基若しくはハロゲンで置換されたアリール基を示す。結合手には水素原子が結合されていてもよい。]
[式(C-1)中、R1、R2、R3及びR4は水素原子又は炭化水素基を示し、R1、R2、R3又はR4が炭化水素基である場合、それらは炭素数1~4の直鎖若しくは分岐のアルキル基である、又は、隣り合うR1及びR2若しくは隣り合うR3及びR4が結合して炭素数6~10の置換若しくは無置換の芳香環又は炭素数6~10の置換若しくは無置換の脂環構造を形成しており、xは、0又は1を示す。]
各実施例、比較例について、表1及び2に示す割合で原料を加熱混合し、粒子を含有しない第1の樹脂組成物(表中の「第1」の組成)と、粒子を含有する第2の樹脂組成物(表中の「第2」の組成)を得た。なお、ここで用いた原料は以下に示す通りである。
F-a(ビスフェノールF-アニリン型、四国化成工業(株)製)
P-a(フェノール-アニリン型、四国化成工業(株)製)
(B)成分:エポキシ樹脂
「セロキサイド」(登録商標)2021P((株)ダイセル製)
(C)成分:硬化剤
BPF(9,9-ビス(4-ヒドロキシフェニル)フルオレン、大阪ガスケミカル製)
BPC(1,1-ビス(4-ヒドロキシフェニル)シクロヘキサン、シグマ・アルドリッチ社製)
TDP(ビス(4-ヒドロキシフェニル)スルフィド、東京化成工業(株)製)
(D)成分:ポリアミド樹脂粒子
PA12(ポリアミド12、平均粒子径20μm、ダイセル・エボニック製)
PA1010(ポリアミド1010、平均粒子径20μm、ダイセル・エボニック製)
PA11(ポリアミド11、平均粒子径25μm、アルケマ製)
(E)成分:
YP-70(フェノキシ樹脂YP-70、新日鉄住金化学(株)製)
得られた第1及び第2の樹脂組成物をそれぞれ離型紙上に70~100℃で塗布し、18g/m2の第1の樹脂フィルム及び25g/m2の第2の樹脂フィルムを得た。得られた第1の樹脂フィルムを、一方向に引き揃えた炭素繊維の上下から供給して繊維間に含浸し、炭素繊維層を形成した。続いて、第2の樹脂フィルムを炭素繊維層の上下からラミネートして表面層を形成し、プリプレグを作製した。このプリプレグの単位面積当たりの炭素繊維量は150g/m2であり、炭素繊維層及び表面層中の合計の樹脂組成物量(マトリックス樹脂量)は86g/m2であった。
上記(D)成分であるポリアミド樹脂粒子を、示差熱量計(DSC)を用いて、25℃から10℃/分の速度で昇温し、得られた吸熱ピークのトップをポリアミド樹脂粒子の融点とした。結果を表3に示す。また、例として、PA12、PA1010及びPA11のDSCチャートを図6に示す。図6中、(a)がPA12のDSCチャートであり、(b)がPA1010(2)のDSCチャートであり、(c)がPA11のDSCチャートである。
得られた第2の樹脂組成物を、示差熱量計(DSC)を用いて、25℃から10℃/分の速度で昇温し、得られた吸熱ピークのトップを第2の樹脂組成物中でのポリアミド樹脂粒子の融点(M1)とした。結果を表1に示す。また、一例として、実施例2、5及び7の第2の樹脂組成物のDSCチャートを図7に示す。なお、実施例7は、実施例5と同様のDSCチャートが得られた。図7中、(a)が実施例2の第2の樹脂組成物のDSCチャートであり、(b)が実施例5の第2の樹脂組成物のDSCチャートであり、(c)が実施例7の第2の樹脂組成物のDSCチャートである。
得られた第2の樹脂組成物を、180℃のオーブン中で2時間硬化して樹脂硬化物を得た。得られた硬化物を、示差熱量計(DSC)を用いて、JIS K7121(1987)に基づいて求めた中間点温度をガラス転移温度として測定した。結果を表1及び2に示す。
得られた第2の樹脂組成物を、180℃の温度で2時間硬化させ、厚さ2mmの樹脂硬化物を得た。この樹脂硬化物をJIS J 7171に従い曲げ弾性率測定を行った。結果を表1に示す。
得られたプリプレグを、[+45°/0°/-45°/90°]4s構成で、擬似等方的に32プライ積層し、オートクレーブにて、圧力0.6MPa、室温から2℃/分で表1及び2に示す温度まで昇温した後、同温で表1及び2に示す時間保持する第1ステップを行った。続いて、圧力0.6MPa、室温から2℃/分で180℃まで昇温した後、同温で2時間加熱硬化し、CFRPを得た。比較例1及び2については、圧力0.6MPa、室温から2℃/分で180℃まで昇温した後、同温で2時間加熱硬化し、CFRPを得た。
繊維強化複合材料中の任意の炭素繊維が伸びる方向に直交する面で繊維強化複合材料を切断したときの切断面を顕微鏡観察(500倍)により分析し、500μm×100μmの範囲について画像解析を行うことでポリアミド粒子の分布を観察することにより、炭素繊維層間の1つの樹脂硬化物に含まれるポリアミド樹脂の含有量C1と、1つの炭素繊維層内に含まれるポリアミド樹脂の含有量C2とを算出した。この測定を、異なる炭素繊維層及び樹脂硬化物の組み合わせとなる任意の5箇所について行い、C1及びC2の5箇所の平均値を用いて、1プリプレグ当たりのC1の容量割合{C1/(C1+C2)}×100を求めた。結果を表1に示す。
Claims (3)
- 強化繊維と、前記強化繊維の繊維間に含浸された、(A)ベンゾオキサジン樹脂、(B)エポキシ樹脂、及び、(C)分子中に2個以上のフェノール性水酸基を有する硬化剤を含有する樹脂組成物と、を含む強化繊維層と、前記強化繊維層の少なくとも一方の表面上に設けられた、(A)ベンゾオキサジン樹脂、(B)エポキシ樹脂、(C)分子中に2個以上のフェノール性水酸基を有する硬化剤、及び、(D)平均粒子径が5~50μmであり、融点が175~210℃であるポリアミド樹脂粒子を含有する表面層と、を備えるプリプレグを複数積層し、
前記表面層を構成する組成中で測定される前記ポリアミド樹脂粒子の融点をM1℃としたときに、120℃以上M1℃未満の温度で加熱する第1ステップと、
第1ステップの後にM1℃以上の温度で加熱して樹脂硬化する第2ステップと、
を備える、繊維強化複合材料の製造方法。 - 前記表面層は、前記(A)成分と前記(B)成分との合計を100質量部としたときに、前記(A)成分を65~80質量部、前記(B)成分を20~35質量部、前記(C)成分を5~20質量部、及び前記(D)成分を15~45質量部含有する、請求項1に記載の繊維強化複合材料の製造方法。
- 前記(D)成分が、ポリアミド12樹脂粒子、ポリアミド1010樹脂粒子又はポリアミド11樹脂粒子を含む、請求項1又は2に記載の繊維強化複合材料の製造方法。
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CN114573879A (zh) * | 2022-04-01 | 2022-06-03 | 扬州超峰汽车内饰件有限公司 | 一种生物基纤维复合材料树脂及其制备方法 |
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WO2018016138A1 (ja) | 2016-07-19 | 2018-01-25 | ダイセル・エボニック株式会社 | ポリアミド粒子及びその製造方法、樹脂組成物並びに成形品 |
CN110274805B (zh) * | 2019-06-04 | 2021-01-22 | 泰山玻璃纤维有限公司 | 一种检测合股纱复合材料性能用试样的制备方法 |
WO2022184656A1 (en) * | 2021-03-01 | 2022-09-09 | Cytec Industries Inc. | Thermoplastic polyamide particles for toughening composite materials |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007016121A (ja) | 2005-07-07 | 2007-01-25 | Toray Ind Inc | 複合材料用プリプレグおよび複合材料 |
JP2009286895A (ja) * | 2008-05-29 | 2009-12-10 | Mitsubishi Rayon Co Ltd | プリプレグおよび繊維強化複合材料の成形方法 |
JP2010013636A (ja) | 2008-06-03 | 2010-01-21 | Mitsubishi Rayon Co Ltd | 繊維強化複合材料用樹脂組成物およびそれを用いた繊維強化複合材料 |
JP2010525101A (ja) * | 2007-04-17 | 2010-07-22 | ヘクセル コーポレイション | 熱可塑性粒子のブレンドを含む複合材料 |
WO2010092723A1 (ja) * | 2009-02-12 | 2010-08-19 | 新日本石油株式会社 | ベンゾオキサジン樹脂組成物 |
JP2012036347A (ja) * | 2010-08-11 | 2012-02-23 | Jx Nippon Oil & Energy Corp | ベンゾオキサジン樹脂組成物及び繊維強化複合材料 |
WO2013046434A1 (ja) * | 2011-09-30 | 2013-04-04 | Jx日鉱日石エネルギー株式会社 | ベンゾオキサジン樹脂組成物及び繊維強化複合材料 |
WO2013122033A1 (ja) * | 2012-02-15 | 2013-08-22 | Jx日鉱日石エネルギー株式会社 | 繊維強化複合材料 |
WO2013122032A1 (ja) * | 2012-02-15 | 2013-08-22 | Jx日鉱日石エネルギー株式会社 | 繊維強化複合材料 |
WO2013122034A1 (ja) * | 2012-02-15 | 2013-08-22 | Jx日鉱日石エネルギー株式会社 | 繊維強化複合材料 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1262297B1 (en) * | 2000-03-03 | 2008-05-21 | Hitachi Chemical Company, Ltd. | Method of preparing a prepreg |
RU2013148117A (ru) * | 2011-03-30 | 2015-05-10 | Торэй Индастриз, Инк. | Препрег, армированный волокном композитный материал и способ его получения |
-
2014
- 2014-03-24 US US14/780,737 patent/US20160083541A1/en not_active Abandoned
- 2014-03-24 EP EP14773775.3A patent/EP2980133A4/en not_active Withdrawn
- 2014-03-24 JP JP2015508495A patent/JP6278950B2/ja active Active
- 2014-03-24 KR KR1020157025536A patent/KR20150135270A/ko not_active Application Discontinuation
- 2014-03-24 CN CN201480019502.7A patent/CN105102513A/zh active Pending
- 2014-03-24 WO PCT/JP2014/058100 patent/WO2014157099A1/ja active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007016121A (ja) | 2005-07-07 | 2007-01-25 | Toray Ind Inc | 複合材料用プリプレグおよび複合材料 |
JP2010525101A (ja) * | 2007-04-17 | 2010-07-22 | ヘクセル コーポレイション | 熱可塑性粒子のブレンドを含む複合材料 |
JP2009286895A (ja) * | 2008-05-29 | 2009-12-10 | Mitsubishi Rayon Co Ltd | プリプレグおよび繊維強化複合材料の成形方法 |
JP2010013636A (ja) | 2008-06-03 | 2010-01-21 | Mitsubishi Rayon Co Ltd | 繊維強化複合材料用樹脂組成物およびそれを用いた繊維強化複合材料 |
WO2010092723A1 (ja) * | 2009-02-12 | 2010-08-19 | 新日本石油株式会社 | ベンゾオキサジン樹脂組成物 |
JP2012036347A (ja) * | 2010-08-11 | 2012-02-23 | Jx Nippon Oil & Energy Corp | ベンゾオキサジン樹脂組成物及び繊維強化複合材料 |
WO2013046434A1 (ja) * | 2011-09-30 | 2013-04-04 | Jx日鉱日石エネルギー株式会社 | ベンゾオキサジン樹脂組成物及び繊維強化複合材料 |
WO2013122033A1 (ja) * | 2012-02-15 | 2013-08-22 | Jx日鉱日石エネルギー株式会社 | 繊維強化複合材料 |
WO2013122032A1 (ja) * | 2012-02-15 | 2013-08-22 | Jx日鉱日石エネルギー株式会社 | 繊維強化複合材料 |
WO2013122034A1 (ja) * | 2012-02-15 | 2013-08-22 | Jx日鉱日石エネルギー株式会社 | 繊維強化複合材料 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2980133A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020040200A1 (ja) * | 2018-08-22 | 2020-02-27 | 東レ株式会社 | プリプレグ |
CN114573879A (zh) * | 2022-04-01 | 2022-06-03 | 扬州超峰汽车内饰件有限公司 | 一种生物基纤维复合材料树脂及其制备方法 |
Also Published As
Publication number | Publication date |
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CN105102513A (zh) | 2015-11-25 |
KR20150135270A (ko) | 2015-12-02 |
EP2980133A4 (en) | 2016-11-23 |
JPWO2014157099A1 (ja) | 2017-02-16 |
JP6278950B2 (ja) | 2018-02-14 |
US20160083541A1 (en) | 2016-03-24 |
EP2980133A1 (en) | 2016-02-03 |
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