WO2013172200A1 - エポキシ-アミン付加物、樹脂組成物、サイジング剤、サイジング剤塗布炭素繊維、及び繊維強化複合材料 - Google Patents
エポキシ-アミン付加物、樹脂組成物、サイジング剤、サイジング剤塗布炭素繊維、及び繊維強化複合材料 Download PDFInfo
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- WO2013172200A1 WO2013172200A1 PCT/JP2013/062601 JP2013062601W WO2013172200A1 WO 2013172200 A1 WO2013172200 A1 WO 2013172200A1 JP 2013062601 W JP2013062601 W JP 2013062601W WO 2013172200 A1 WO2013172200 A1 WO 2013172200A1
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- epoxy
- amine adduct
- fiber
- compound
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- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 1
- RANDTSYDUPETTO-UHFFFAOYSA-M tetrabutylphosphanium;tetradecanoate Chemical compound CCCCCCCCCCCCCC([O-])=O.CCCC[P+](CCCC)(CCCC)CCCC RANDTSYDUPETTO-UHFFFAOYSA-M 0.000 description 1
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- HWCKGOZZJDHMNC-UHFFFAOYSA-M tetraethylammonium bromide Chemical compound [Br-].CC[N+](CC)(CC)CC HWCKGOZZJDHMNC-UHFFFAOYSA-M 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
- VNXUJPCYZSNXDG-UHFFFAOYSA-N thiopyran-4-one Chemical group O=C1C=CSC=C1 VNXUJPCYZSNXDG-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 150000003852 triazoles Chemical group 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- KYWIYKKSMDLRDC-UHFFFAOYSA-N undecan-2-one Chemical group CCCCCCCCCC(C)=O KYWIYKKSMDLRDC-UHFFFAOYSA-N 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
-
- 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
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C215/00—Compounds containing amino and hydroxy groups bound to the same carbon skeleton
- C07C215/42—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having amino groups or hydroxy groups bound to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton
- C07C215/44—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having amino groups or hydroxy groups bound to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton bound to carbon atoms of the same ring or condensed ring system
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/36—Compounds containing oxirane rings with hydrocarbon radicals, substituted by nitrogen atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
- C08G59/1477—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing nitrogen
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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
- C08G59/182—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 using pre-adducts of epoxy compounds with curing agents
- C08G59/184—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 using pre-adducts of epoxy compounds with curing agents with amines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—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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- C—CHEMISTRY; METALLURGY
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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
- C08G59/50—Amines
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/248—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using pre-treated fibres
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/249—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs characterised by the additives used in the prepolymer mixture
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J2363/02—Polyglycidyl ethers of bis-phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2371/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2918—Rod, strand, filament or fiber including free carbon or carbide or therewith [not as steel]
Definitions
- the present invention relates to an epoxy-amine adduct, a resin composition containing the epoxy-amine adduct, and a fiber reinforced composite material formed from a prepreg obtained by impregnating or coating the resin composition on a reinforcing fiber.
- the present invention further relates to a sizing agent containing the above epoxy-amine adduct, a sizing agent-coated carbon fiber obtained by applying the sizing agent to carbon fiber, and a fiber-reinforced composite material including the sizing agent-coated carbon fiber.
- an epoxy-amine adduct (sometimes referred to as “amine adduct”) produced by reacting an amine compound with an epoxy compound is known.
- the amine adduct include, for example, Patent Document 1 and Patent Document 2, an addition compound obtained by reacting an epoxy resin having a glycidyl group with a dialkylamine, and neutralization treatment with an acidic substance on the surface of the addition compound powder. Things are disclosed.
- Patent Document 3 for example, an amino compound having an amino group and an N, N-dialkylamino group is reacted with an epoxy resin having an average of more than one glycidyl group in a molecule at a specific ratio. The resulting epoxy-amine adduct is disclosed.
- the amine adduct is used as an epoxy resin curing agent (latent curing agent).
- the amine adduct is used as a curing agent, as well as, for example, an adhesion improver that improves the adhesion between a resin and a reinforced fiber in a composite material (fiber reinforced composite material) of a reinforced fiber such as carbon fiber and the resin.
- an adhesion improver that improves the adhesion between a resin and a reinforced fiber in a composite material (fiber reinforced composite material) of a reinforced fiber such as carbon fiber and the resin. has come to be used as well.
- a fiber reinforced composite material which is a composite material of carbon fiber and resin that has high specific strength, specific elasticity, and heat resistance and is lightweight, has extremely excellent heat resistance and machinery. Since it has physical properties, it has been used for various purposes.
- a sizing agent (convergence agent) is generally used.
- the sizing agent include diglycidyl ether of bisphenol A (see Patent Documents 4 and 5), polyalkylene oxide adduct of bisphenol A (see Patent Documents 6 and 7), and epoxy to polyalkylene oxide adduct of bisphenol A.
- Patent Documents 8 and 9 A group to which a group is added (see Patent Documents 8 and 9) and an epoxy adduct of polyalkylene glycol (see Patent Documents 10 to 12) are known. These sizing agents are applied to carbon fibers as a paste, and are used for the purpose of improving the high-order processability of carbon fibers having poor convergence.
- JP-A-56-155222 Japanese Patent Laid-Open No. 57-1000012 JP 61-228018 A Japanese Patent Laid-Open No. 50-059589 JP-A-57-171767 Japanese Unexamined Patent Publication No. 07-009444 JP 2000-336577 A JP 61-028074 A Japanese Patent Laid-Open No. 01-272867 JP-A-57-128266 JP 59-009273 A JP 62-033872 A
- the amine adducts disclosed in Patent Documents 1 to 3 do not have an active hydrogen such as a hydrogen atom directly bonded to a nitrogen atom, or the active hydrogen may be various compounds (for example, inorganic acids, organic acids, phenols).
- the active hydrogen may be various compounds (for example, inorganic acids, organic acids, phenols).
- the effect of improving the adhesion between the resin and the reinforced fiber is sufficient. Had a problem that could not be obtained.
- the amine adduct is assumed to be used as an additive for enhancing the adhesion between a resin and a reinforcing fiber in a fiber reinforced composite material, for example, other components (for example, thermoplastic resins, epoxy compounds, etc.) are cured. It is required that the resin can be easily blended with the resin.
- a conventionally known adduct of an epoxy compound having a glycidyl group, such as bisphenol A diglycidyl ether, and a polyamine compound has a crosslinked structure, so that it does not soften or melt even when heated. It was difficult to mix with other components, and a uniform composition could not be obtained.
- an object of the present invention is an epoxy-amine that has high reactivity, can improve the adhesion between the resin and the reinforcing fiber in the fiber-reinforced composite material, and can be easily blended with other components such as the resin.
- Another object of the present invention is to provide a resin composition that can form a fiber-reinforced composite material having high reactivity and excellent adhesion between the resin and the reinforcing fibers.
- another object of the present invention is to provide a fiber-reinforced composite material having excellent adhesion between a resin and reinforcing fibers and having high mechanical properties (for example, toughness).
- the other object of this invention is to provide the sizing agent which can improve the high-order workability of carbon fiber and can improve the adhesiveness of carbon fiber and a matrix resin. Furthermore, another object of the present invention is to provide a sizing agent-coated carbon fiber excellent in high-order processability and excellent adhesion between carbon fibers and a matrix resin, and a fiber-reinforced composite material containing the sizing agent-coated carbon fiber. There is.
- the present inventor has an epoxy-amine adduct (amine adduct) obtained by reacting a specific epoxy compound with a specific amine compound, or has a specific structure.
- the epoxy-amine adduct (amine adduct) has high reactivity, can improve the adhesion between the resin and the reinforcing fiber in the fiber-reinforced composite material, and can be easily applied to other components such as the resin.
- the present invention was completed by finding out that it can be blended.
- the present invention relates to an epoxy-amine adduct having two or more amino groups in the molecule, the epoxy compound (A) having two or more alicyclic epoxy groups in the molecule, and An epoxy-amine adduct obtained by reaction with an amine compound (B) having two or more amino groups is provided.
- the epoxy-amine adduct is provided wherein the epoxy compound (A) is a compound represented by the following formula (a). [Wherein, X represents a single bond or a divalent group having one or more atoms. ]
- the epoxy-amine adduct is provided, wherein the amine compound (B) is a compound represented by the following formula (b).
- R 2 represents an r-valent organic group having a carbon atom at the bonding site with the nitrogen atom shown in the formula. r represents an integer of 2 or more.
- the present invention also provides an epoxy-amine adduct represented by the following formula (I).
- R 2 ′ represents a divalent organic group having a carbon atom at the bonding site with the nitrogen atom shown in the formula.
- X represents a single bond or a divalent group having one or more atoms.
- q represents an integer of 1 or more.
- the present invention also provides a resin composition comprising the above epoxy-amine adduct and a thermoplastic resin.
- the above resin composition which is a resin composition for fiber reinforced composite materials.
- the present invention also provides a prepreg obtained by impregnating or coating the above-mentioned resin composition on reinforcing fibers.
- the present invention also provides a fiber-reinforced composite material formed from the prepreg.
- the present invention also provides a sizing agent comprising the above epoxy-amine adduct.
- the present invention also provides sizing agent-coated carbon fibers obtained by applying the sizing agent to carbon fibers.
- the present invention also provides a fiber-reinforced composite material comprising the sizing agent-coated carbon fiber and a cured product obtained by curing a thermoplastic resin or a curable compound.
- the epoxy-amine adduct of the present invention has the above-described configuration, for example, it has high reactivity with respect to functional groups such as a hydroxyl group, a carboxyl group, and an epoxy group present on the surface of the reinforcing fiber, and the resin and the reinforcing fiber in the fiber-reinforced composite material. Can be effectively improved. Furthermore, the epoxy-amine adduct of the present invention can be softened or melted at least by heating, or can be easily blended with other components because of its excellent solubility in solvents and resins.
- a resin composition capable of forming a fiber-reinforced composite material having excellent adhesion between the resin and the reinforcing fiber can be obtained, and the resin and reinforcing fiber have excellent adhesion.
- a fiber-reinforced composite material having high mechanical properties (particularly toughness) can be obtained.
- the sizing agent of the present invention since the sizing agent of the present invention has the above-described configuration, it is possible to improve the high-order processability of the carbon fiber and to improve the adhesion between the carbon fiber and the matrix resin. For this reason, the sizing agent-coated carbon fiber obtained by applying the sizing agent of the present invention to the carbon fiber is excellent in high-order processability and excellent in adhesion between the carbon fiber and the matrix resin. Furthermore, the fiber-reinforced composite material including the sizing agent-coated carbon fiber has excellent heat resistance and mechanical strength, and has high productivity.
- 1 is a chart of 1 H-NMR spectrum of an epoxy compound (Celoxide 2021P) used as a raw material in Examples.
- 1 is a chart of 1 H-NMR spectrum of an amine compound (JEFFAMINE D-230) used as a raw material in Examples.
- 1 is a chart of 1 H-NMR spectrum of an epoxy-amine adduct obtained in Example 1.
- 2 is a chart of 1 H-NMR spectrum of an epoxy-amine adduct obtained in Example 2.
- the epoxy-amine adduct of the present invention is an epoxy-amine adduct having two or more amino groups in the molecule, and an epoxy compound (A) (2) having two or more alicyclic epoxy groups in the molecule.
- Reaction of simply “epoxy compound (A)” and amine compound (B) having two or more amino groups in the molecule (sometimes simply referred to as “amine compound (B)”) Is an epoxy-amine adduct obtained by More specifically, the epoxy-amine adduct of the present invention is obtained by reacting an alicyclic epoxy group possessed by the epoxy compound (A) with an amino group possessed by the amine compound (B).
- “amino group” simply means —NH 2 (unsubstituted amino group), and “—NH— group” refers to the unsubstituted amino group (—NH 2 ). Shall not be included.
- Epoxy compound (A) The epoxy compound (A) that is a raw material (precursor) of the epoxy-amine adduct of the present invention is a polyepoxy compound (alicyclic epoxy compound) having two or more alicyclic epoxy groups in the molecule.
- the “alicyclic epoxy group” in the present specification means an epoxy group composed of two adjacent carbon atoms constituting an alicyclic ring (aliphatic ring) and an oxygen atom.
- the alicyclic epoxy group possessed by the epoxy compound (A) is not particularly limited, but examples thereof include aliphatic rings having 4 to 16 carbon atoms (aliphatic hydrocarbons) such as cyclobutane ring, cyclopentane ring, cyclohexane ring, cycloheptane ring and the like. And an epoxy group composed of two adjacent carbon atoms constituting a ring) and an oxygen atom.
- the epoxy group (cyclohexene oxide group) comprised by the two carbon atoms which comprise a cyclohexane ring, and an oxygen atom is preferable.
- the number of alicyclic epoxy groups in the molecule of the epoxy compound (A) may be two or more, and is not particularly limited, but is preferably 2 to 6, more preferably 2 to 5, and still more preferably 2. Or three. When the number of alicyclic epoxy groups exceeds 6, it may be difficult to blend the other components of the epoxy-amine adduct formed by the reaction with the amine compound (B).
- epoxy compound (A) a compound (epoxy compound) represented by the following formula (a) is particularly preferable.
- X in the above formula (a) represents a single bond or a linking group (a divalent group having one or more atoms).
- the linking group include a divalent hydrocarbon group, a carbonyl group, an ether bond, an ester bond, a carbonate group, an amide group, and a group in which two or more of these groups are linked.
- Examples of the epoxy compound (A) in which X in the formula (a) is a single bond include 3,4,3 ′, 4′-diepoxybicyclohexane.
- Examples of the divalent hydrocarbon group include a linear or branched alkylene group having 1 to 18 carbon atoms, a divalent alicyclic hydrocarbon group, and the like.
- Examples of the linear or branched alkylene group having 1 to 18 carbon atoms include a methylene group, a methylmethylene group, a dimethylmethylene group, an ethylene group, a propylene group, and a trimethylene group.
- divalent alicyclic hydrocarbon group examples include 1,2-cyclopentylene group, 1,3-cyclopentylene group, cyclopentylidene group, 1,2-cyclohexylene group, 1,3-cyclopentylene group, And bivalent cycloalkylene groups (including cycloalkylidene groups) such as cyclohexylene group, 1,4-cyclohexylene group, and cyclohexylidene group.
- the linking group X is particularly preferably a linking group containing an oxygen atom, specifically, —CO—, —O—CO—O—, —CO—O—, —O—, —CO—NH.
- Typical examples of the alicyclic epoxy compound represented by the above formula (a) include compounds represented by the following formulas (a-1) to (a-10).
- l and m each represents an integer of 1 to 30.
- R 1 in the following formula (a-5) represents an alkylene group having 1 to 8 carbon atoms.
- n1 to n6 each represents an integer of 1 to 30.
- the compound represented by the above formula (a) particularly from the viewpoint of heat resistance and handleability, the compound represented by the above formula (a-1) [3,4-epoxycyclohexylmethyl (3,4-epoxy) ) Cyclohexanecarboxylate; trade name “Celoxide 2021P” (manufactured by Daicel Corporation) and the like] are preferable.
- the amine compound (B) which is a raw material (precursor) of the epoxy-amine adduct of the present invention is a polyamine compound having two or more amino groups (—NH 2 ; unsubstituted amino group) in the molecule.
- the number of amino groups in the molecule of the amine compound (B) may be two or more, and is not particularly limited, but is preferably 2 to 6, more preferably 2 to 5, still more preferably 2 or 3 It is a piece. When the number of amino groups exceeds 6, blending with other components of the epoxy-amine adduct formed by the reaction with the epoxy compound (A) may be difficult.
- the molecular weight of the amine compound (B) is not particularly limited, but is preferably 80 to 10,000, more preferably 100 to 5,000, and still more preferably 200 to 1,000. When the molecular weight is less than 80, the amount of the —NH— group (substituted amino group) described later in the epoxy-amine adduct becomes too large, and the composition with the curable resin (curable compound) is cured. The cured product (cured resin) obtained may become too brittle.
- the effect of reacting the epoxy compound (A) is reduced, or the effect obtained by blending the epoxy-amine adduct (for example, improving the heat resistance of the cured product (cured resin), reinforcing the fiber
- the heat resistance and toughness of the composite material may be insufficient.
- Examples of the amine compound (B) include r-valent amine compounds represented by the following formula (b).
- R in the above formula (b) represents an integer of 2 or more.
- r may be an integer of 2 or more and is not particularly limited, but is preferably 2 to 6, more preferably 2 to 5, and still more preferably 2 or 3.
- R 2 in the above formula (b) represents an r-valent organic group (organic residue) having a carbon atom at the binding site with the nitrogen atom shown in the formula.
- R 2 include an r-valent linear or branched aliphatic hydrocarbon group; an r-valent cyclic aliphatic hydrocarbon group; an r-valent aromatic hydrocarbon group; and two or more of these groups And r-valent groups bonded directly or via a linking group (divalent group) containing a hetero atom.
- Examples of the r-valent linear or branched aliphatic hydrocarbon group include a divalent linear or branched aliphatic hydrocarbon group, a trivalent linear or branched aliphatic hydrocarbon group, and the like. Examples thereof include a hydrogen group and a tetravalent linear or branched aliphatic hydrocarbon group.
- Examples of the divalent linear or branched aliphatic hydrocarbon group include an alkylene group [for example, a methylene group, an ethylene group, a propylene group, a butylene group, a pentylene group, a hexylene group, a heptylene group, an octylene group, Linear or branched chain having 1 to 30 carbon atoms (C 1-30 ) such as nonylene group, decylene group, undecylene group, dodecylene group, tridecylene group, tetradecylene group, pentadecylene group, hexadecylene group, heptadecylene group, octadecylene group, etc.
- alkylene group for example, a methylene group, an ethylene group, a propylene group, a butylene group, a pentylene group, a hexylene group, a heptylene group,
- An alkylene group (preferably a C 1-18 alkylene group)], an alkenylene group [an alkenylene group corresponding to the above alkylene group, for example, a linear or branched alkenylene group having 2 to 30 carbon atoms such as a vinylene group or an arylene group. (Preferably a C 2-18 alkenylene group) and the like.
- Examples of the trivalent linear or branched aliphatic hydrocarbon group include, for example, alkane-triyl groups [for example, propane-triyl group, 1,1,1-trimethylpropane-triyl group, etc. 30 linear or branched alkane-triyl groups (preferably a C 3-18 alkane-triyl group) and the like.
- Examples of the tetravalent linear or branched aliphatic hydrocarbon group include, for example, alkane-tetrayl groups [for example, butane-tetrayl groups, 2,2-dimethylpropane-tetrayl groups and the like having 4 to 30 carbon atoms.
- alkane-tetrayl groups for example, butane-tetrayl groups, 2,2-dimethylpropane-tetrayl groups and the like having 4 to 30 carbon atoms.
- a linear or branched alkane-tetrayl group preferably a C 4-18 alkane-tetrayl group
- the r-valent linear or branched aliphatic hydrocarbon group may have various substituents (that is, the r-valent linear or branched aliphatic hydrocarbon group has At least one of the hydrogen atoms may be substituted with various substituents).
- substituents include a halogen atom, an oxo group, a hydroxyl group, a substituted oxy group (for example, an alkoxy group, an aryloxy group, an aralkyloxy group, an acyloxy group, etc.), a carboxyl group, and a substituted oxycarbonyl group (alkoxycarbonyl group).
- the hydroxyl group and carboxyl group may be protected with a protective group commonly used in the field of organic synthesis (for example, an acyl group, an alkoxycarbonyl group, an organic silyl group, an alkoxyalkyl group, an oxacycloalkyl group, etc.).
- Examples of the substituted or unsubstituted carbamoyl group include an alkyl group such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, s-butyl group, t-butyl group, acetyl group, benzoyl group, etc.
- substituted or unsubstituted amino group examples include an alkyl group such as methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, s-butyl group, t-butyl group, acetyl group, benzoyl group, and the like.
- An amino group having an acyl group such as a group, or an unsubstituted amino group.
- the heterocyclic ring constituting the heterocyclic group includes an aromatic heterocyclic ring and a non-aromatic heterocyclic ring.
- a heterocyclic ring include, for example, a heterocyclic ring containing an oxygen atom as a hetero atom (for example, a 3-membered ring such as an oxirane ring, a 4-membered ring such as an oxetane ring, a furan ring, a tetrahydrofuran ring, an oxazole ring, and ⁇ -butyrolactone.
- 5-membered ring such as a ring
- 6-membered ring such as 4-oxo-4H-pyran ring, tetrahydropyran ring, morpholine ring
- condensed ring such as benzofuran ring, 4-oxo-4H-chromene ring, chroman ring, 3-oxa Bridged rings such as tricyclo [4.3.1.1 4,8 ] undecan-2-one ring and 3-oxatricyclo [4.2.1.0 4,8 ] nonan-2-one ring )
- Hetero rings containing a sulfur atom as a hetero atom for example, 5-membered rings such as thiophene ring, thiazole ring and thiadiazole ring, 6-membered rings such as 4-oxo-4H-thiopyran ring, benzothiol
- a condensed ring such as a thione ring
- the heterocyclic group is not limited to the substituent that the r-valent linear or branched aliphatic hydrocarbon group may have, or an alkyl group (for example, a C 1- group such as a methyl group or an ethyl group). 4 alkyl group), a cycloalkyl group, an aryl group (for example, phenyl group, naphthyl group, etc.) and the like.
- the nitrogen atom constituting the heterocyclic ring is a conventional protective group (for example, an alkoxy group, an alkoxycarbonyl group, an alkenyloxycarbonyl group, an aralkyloxycarbonyl group, an aralkyl group, an acyl group, an arylsulfonyl group, an alkylsulfonyl group, etc.) It may be protected by.
- a conventional protective group for example, an alkoxy group, an alkoxycarbonyl group, an alkenyloxycarbonyl group, an aralkyloxycarbonyl group, an aralkyl group, an acyl group, an arylsulfonyl group, an alkylsulfonyl group, etc.
- Examples of the r-valent cyclic aliphatic hydrocarbon group include a divalent cyclic aliphatic hydrocarbon group, a trivalent cyclic aliphatic hydrocarbon group, and a tetravalent cyclic aliphatic hydrocarbon group. .
- Examples of the divalent cyclic aliphatic hydrocarbon group include a cycloalkylene group [for example, a cycloalkylene group having 3 to 20 carbon atoms such as a cyclopropylene group, a cyclobutylene group, a cyclopentylene group, and a cyclohexylene group ( Preferably a C 3-15 cycloalkylene group)], cycloalkenylene group [cycloalkenylene group corresponding to the above cycloalkylene group, for example, a cycloalkenylene group having 3 to 20 carbon atoms such as a cyclohexenylene group (preferably C 3 -15 cycloalkenylene groups)], cycloalkylidene groups [cycloalkylidene groups corresponding to the above cycloalkylene groups, such as cyclopentylidene groups, cyclohexylidene groups, etc., preferably C 3-20 cycloalkylid
- Examples of the trivalent cyclic aliphatic hydrocarbon group include a cycloalkane-triyl group and a polycyclic hydrocarbon-triyl group.
- Examples of the tetravalent cyclic aliphatic hydrocarbon group include a cycloalkane-tetrayl group and a polycyclic hydrocarbon-tetrayl group.
- the r-valent cyclic aliphatic hydrocarbon group may have the substituent exemplified as the substituent that the r-valent linear or branched aliphatic hydrocarbon group may have. Good.
- Examples of the r-valent aromatic hydrocarbon group include groups obtained by removing r hydrogen atoms from an aromatic hydrocarbon.
- the aromatic hydrocarbon include benzene, naphthalene, anthracene, 9-phenylanthracene, 9,10-diphenylanthracene, naphthacene, pyrene, perylene, biphenyl, binaphthyl, and bianthryl.
- the r-valent aromatic hydrocarbon group may have a substituent exemplified as a substituent that the r-valent linear or branched aliphatic hydrocarbon group may have.
- linking group containing a hetero atom examples include —CO— (carbonyl group), —O— (ether bond), —CO—O— (ester bond), —O—CO—O.
- Carbonate group —CO—NH— (amide group), —CO—NR a — (substituted amide group; R a represents an alkyl group), —NH—, —NR b — (R b represents an alkyl group)
- a divalent group containing a hetero atom oxygen atom, nitrogen atom, sulfur atom, etc.
- —SO— or —SO 2 — or a divalent group in which a plurality of these are linked.
- the amine compound (B) is preferably a compound represented by the following formula (b-1) (polyetheramine).
- R 3 in the above formula (b-1) is a divalent linear, branched, or cyclic aliphatic hydrocarbon group, or one or more of a linear or branched aliphatic hydrocarbon group and a cyclic group.
- the divalent straight chain, branched chain, or cyclic aliphatic hydrocarbon group include the divalent straight chain, branched chain, or cyclic aliphatic hydrocarbon group exemplified as R 2 described above. .
- the divalent straight chain, branched chain, or cyclic aliphatic hydrocarbon group as R 3 may have a substituent. Examples of the substituent include the above-mentioned r-valent straight chain. The substituent etc. which the chain
- R 3 is preferably a divalent linear or branched aliphatic hydrocarbon group, more preferably a linear or branched alkylene group having 2 to 6 carbon atoms, and still more preferably 2 carbon atoms. 4 to 4 linear or branched alkylene groups (in particular, ethylene group, trimethylene group, propylene group).
- R 4 in the above formula (b-1) is a divalent linear, branched, or cyclic aliphatic hydrocarbon group, or one or more of a linear or branched aliphatic hydrocarbon group and a cyclic group.
- the divalent straight chain, branched chain, or cyclic aliphatic hydrocarbon group include the divalent straight chain, branched chain, or cyclic aliphatic hydrocarbon group exemplified as R 2 described above. .
- the divalent straight chain, branched chain, or cyclic aliphatic hydrocarbon group as R 4 may have a substituent. Examples of the substituent include the above-described r-valent straight chain. The substituent etc. which the chain
- R 4 is preferably a divalent linear or branched aliphatic hydrocarbon group, more preferably a linear or branched alkylene group having 2 to 6 carbon atoms, and still more preferably 2 carbon atoms. 4 to 4 linear or branched alkylene groups (in particular, ethylene group, trimethylene group, propylene group).
- R 4 (a plurality of R 4), respectively in parentheses may be the same or may be different.
- subjected p may be a random type, and may be a block type.
- p (the number of repeating structural units in parentheses marked with p) represents an integer of 1 or more.
- p is preferably 1 to 100, more preferably 1 to 70, and still more preferably 1 to 30.
- the heat resistance of the epoxy-amine adduct of the present invention, the heat resistance and mechanical properties (toughness, etc.) of the fiber-reinforced composite material may be insufficient depending on the application.
- R 3 and R 4 in the above formula (b-1) may be the same or different.
- Examples of the amine compound (B) also include a compound (polyetheramine) represented by the following formula (b-2).
- s (the number of repeating structural units in parentheses to which s is attached) represents an integer of 1 or more, preferably 1 to 100, more preferably 1 to 70, still more preferably 1 ⁇ 30.
- t (the number of structures in parentheses to which t bonded to R 6 is attached) represents an integer of 3 or more, preferably 3 to 6, more preferably 3 to 5 More preferably, it is 3 or 4.
- R 5 in the above formula (b-2) is a divalent linear, branched or cyclic aliphatic hydrocarbon group, or one or more of a linear or branched aliphatic hydrocarbon group and a cyclic group.
- a divalent group formed by linking with one or more aliphatic hydrocarbon groups for example, a divalent linear, branched or cyclic aliphatic hydrocarbon group exemplified as R 2 described above Can be mentioned.
- R 6 represents a t-valent organic group having a carbon atom at the bonding site with the oxygen atom shown in the formula, and is the same as R 2 (for example, a t-valent linear or branched chain).
- Aliphatic hydrocarbon groups, t-valent cyclic aliphatic hydrocarbon groups, etc. are examples of R 5 and a t-valent linear or branched chain.
- Examples of the amine compound (B) include “JEFFAMINE D-230”, “JEFFAMINE D-400”, “JEFFAMINE D-2000”, “JEFFAMINE D-4000”, “JEFFAMINE HK-511”, “JEFFAMINE ED”.
- the epoxy-amine adduct of the present invention can be produced by reacting an epoxy compound (A) with an amine compound (B). More specifically, the epoxy-amine adduct of the present invention is produced by reacting the alicyclic epoxy group of the epoxy compound (A) with the amino group of the amine compound (B).
- the epoxy compound (A) can be used alone or in combination of two or more.
- amine compound (B) can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- reaction of epoxy compound (A) and amine compound (B) can be allowed to proceed in the presence of a solvent, or can be allowed to proceed in the absence of a solvent (that is, without solvent). Although it does not specifically limit as said solvent, The thing which can melt
- examples of the solvent include aliphatic hydrocarbons such as hexane, heptane, and octane; alicyclic hydrocarbons such as cyclohexane; aromatic hydrocarbons such as benzene, toluene, xylene, and ethylbenzene; chloroform, Halogenated hydrocarbons such as dichloromethane and 1,2-dichloroethane; ethers such as diethyl ether, dimethoxyethane, tetrahydrofuran and dioxane; ketones such as acetone, methyl ethyl ketone and methyl isobutyl ketone; methyl acetate, ethyl acetate, isopropyl acetate and butyl acetate Esters of amides; Amides such as N, N-dimethylformamide and N, N-dimethylacetamide; Nitriles such as acetonitrile, propion
- the above reaction can be allowed to proceed in the presence of a catalyst, or can be allowed to proceed in the absence (substantially absent) of a catalyst. More specifically, when an aromatic amine compound (a compound having an amino group substituted on an aromatic ring) is used as the amine compound (B), the above reaction is preferably allowed to proceed in the presence of a catalyst. When a compound other than the aromatic amine compound (non-aromatic amine compound) is used as the compound (B), the above reaction is preferably allowed to proceed in the absence of a catalyst.
- the catalyst is not particularly limited, and examples thereof include a curing accelerator used when an epoxy resin (epoxy compound) is cured with an amine-based curing agent.
- Amines for example, lauryldimethylamine, N, N-dimethylcyclohexylamine, N, N-dimethylbenzylamine, N, N-dimethylaniline, (N, N-dimethylaminomethyl) phenol, 2,4,6-tris ( N, N-dimethylaminomethyl) phenol, 1,8-diazabicyclo [5.4.0] undecene-7 (DBU), 1,5-diazabicyclo [4.3.0] nonene-5 (DBN) and the like]; Tertiary amine salts [for example, carboxylates, sulfonates, inorganic acid salts and the like of the above tertiary amines]; Imidazoles [for example, 2-methylamine Dazole, 2-ethylimidazole, 1,2-dimethyl
- the amount of the catalyst used when the non-aromatic amine compound is used as the amine compound (B) is not particularly limited, but is less than 1 part by weight (for example, 100 parts by weight of the epoxy compound (A)). 0 part by weight or more and less than 1 part by weight) is preferable, more preferably less than 0.5 part by weight, and still more preferably less than 0.3 part by weight.
- the amount of the catalyst used is 1 part by weight or more, the —NH— group generated by the reaction of the epoxy compound (A) and the amine compound (B) further reacts with the alicyclic epoxy group of the epoxy compound (A). As a result, it may be difficult to mix the resulting epoxy-amine adduct with other components.
- the amount of the catalyst used when the aromatic amine compound is used as the amine compound (B) is not particularly limited, but is preferably 0.1 to 10 parts by weight with respect to 100 parts by weight of the epoxy compound (A). More preferably, it is 0.5 to 8 parts by weight, still more preferably 1 to 5 parts by weight.
- the amount of the catalyst used is less than 0.1 parts by weight, the progress of the reaction between the epoxy compound (A) and the amine compound (B) may be insufficient.
- the usage-amount of a catalyst exceeds 10 weight part, it may become economically disadvantageous.
- the ratio of the epoxy compound (A) to the reaction and the amine compound (B) is not particularly limited, but the alicyclic epoxy group of the epoxy compound (A) in the reaction and the amino group of the amine compound (B)
- the ratio of [alicyclic epoxy group / amino group] is controlled to be 0.05 to 1.00 (more preferably 0.10 to 0.95, still more preferably 0.15 to 0.90). It is preferable. If the ratio [alicyclic epoxy group / amino group] is less than 0.05, a large amount of unreacted amine compound (B) may remain. On the other hand, when the ratio [alicyclic epoxy group / amino group] exceeds 1.00, an unreacted epoxy compound (A) may remain.
- the temperature (reaction temperature) in the above reaction is not particularly limited, but is preferably 30 to 250 ° C, more preferably 80 to 200 ° C, still more preferably 120 to 180 ° C. If the reaction temperature is less than 30 ° C., the reaction rate may be slow, and the productivity of the epoxy-amine adduct may be reduced. On the other hand, when the reaction temperature exceeds 250 ° C., the epoxy compound (A) and the amine compound (B) are decomposed, and the yield of the epoxy-amine adduct may be lowered. During the reaction, the reaction temperature may be controlled to be always constant (substantially constant) or may be controlled to change stepwise or continuously.
- reaction time is not particularly limited, but is preferably 0.2 to 20 hours, more preferably 0.5 to 10 hours, and further preferably 1 to 5 hours.
- reaction time is less than 0.2 hours, the yield of the epoxy-amine adduct may be lowered.
- reaction time exceeds 20 hours, the productivity of the epoxy-amine adduct may be lowered.
- the above reaction can be carried out under normal pressure, under pressure or under reduced pressure.
- the atmosphere in which the above reaction is performed is not particularly limited, and the reaction can be performed in any atmosphere such as an inert gas (for example, nitrogen, argon, etc.) or in the air.
- the above reaction is not particularly limited and can be carried out by any of a batch method (batch method), a semi-batch method, and a continuous flow method.
- a batch method batch method
- the batch type reactor is charged with the epoxy compound (A), the amine compound (B), and other components such as a solvent as necessary, and further if necessary. Heating, stirring, etc.
- reaction of epoxy compound (A) and amine compound (B) yields the epoxy-amine adduct of the present invention.
- the epoxy-amine adduct of the present invention may be a known or conventional separation means such as filtration, concentration, distillation, extraction, crystallization, recrystallization, column chromatography, or a combination means combining these. Can be separated and purified.
- the number of amino groups (—NH 2 ; unsubstituted amino group) possessed by the epoxy-amine adduct of the present invention is 2 or more, preferably 2 to 10, more preferably 2 to 4, even more preferably. Two or three.
- the epoxy-amine adduct of the present invention has substantially no epoxy group (particularly, an alicyclic epoxy group derived from the epoxy compound (A)).
- the amino group (—NH 2 ; unsubstituted amino group) in the epoxy-amine adduct of the present invention is not particularly limited, but is usually the end of the molecular chain of the epoxy-amine adduct (particularly linear epoxy-amine addition). In the case of a product, it is located at both ends of the molecular chain of the epoxy-amine adduct. However, it is not limited to this.
- the epoxy-amine adduct of the present invention reacts with the reaction between the alicyclic epoxy group of the epoxy compound (A) and the amino group (—NH 2 ; unsubstituted amino group) of the amine compound (B). Generate.
- the epoxy-amine adduct of the present invention is effective in reacting the —NH— group (substituted amino group) formed by the reaction of the alicyclic epoxy group with an amino group and the alicyclic epoxy group of the epoxy compound (A). This is presumed to be poor, but usually —NH— groups remain in the molecule.
- the number of —NH— groups in the molecule of the epoxy-amine adduct of the present invention is not particularly limited, but is preferably 1 to 200, more preferably 1 to 150, and still more preferably 2 to 100. .
- the epoxy-amine adduct does not have a —NH— group, the reactivity may be lowered, or the effect of improving the adhesion between the resin and the reinforcing fiber in the fiber-reinforced composite material may not be sufficiently obtained depending on the application.
- the number of —NH— groups in the epoxy-amine adduct is, for example, the epoxy constituting the epoxy-amine adduct using a molecular weight in terms of standard polystyrene measured by gel permeation chromatography (GPC). It is possible to calculate by obtaining the number of the compound (A) and the amine compound (B).
- a compound (epoxy-amine adduct) obtained by reacting an epoxy compound having a glycidyl group with an amine compound (B) can be obtained by reacting a glycidyl group with an amino group (unsubstituted amino group).
- the —NH— group does not substantially remain because the —NH— group to be generated and the glycidyl group are very reactive.
- the number average molecular weight of the epoxy-amine adduct of the present invention is not particularly limited, but is preferably 200 to 40000, more preferably 300 to 30000, and still more preferably 400 to 20000. If the number average molecular weight is less than 200, the functional expression as an epoxy-amine adduct may be insufficient. On the other hand, if the number average molecular weight exceeds 40,000, it may be difficult to blend the epoxy-amine adduct with other components.
- the number average molecular weight of the epoxy-amine adduct can be calculated using, for example, a molecular weight in terms of standard polystyrene measured by gel permeation chromatography (GPC).
- the glass transition temperature (Tg) of the epoxy-amine adduct of the present invention is not particularly limited, but is preferably ⁇ 50 to 200 ° C., more preferably ⁇ 40 to 190 ° C., and further preferably ⁇ 30 to 180 ° C. If the Tg of the epoxy-amine adduct is less than ⁇ 50 ° C., the heat resistance and mechanical properties (toughness, etc.) of the fiber reinforced composite material may be insufficient depending on the application. On the other hand, if the Tg of the epoxy-amine adduct exceeds 200 ° C., blending with other components may be difficult.
- the glass transition temperature of the epoxy-amine adduct can be measured, for example, by differential scanning calorimetry (DSC) or dynamic viscoelasticity measurement.
- R 2 ′ in the above formula (I) represents a divalent organic group (organic residue) having a carbon atom at the binding site with the nitrogen atom shown in the formula.
- R 2 ′ in the above formula (b) And the like.
- X in the above formula (I) represents a single bond or a linking group (a divalent group having one or more atoms), and is the same as X in the above formula (a).
- q is an integer greater than or equal to 2
- each X may be the same and may differ.
- q (the number of repeating structural units in parentheses with q) represents an integer of 1 or more. q is not particularly limited, but is preferably 1 to 200, more preferably 2 to 150, and still more preferably 2 to 100. When q exceeds 200, blending with other components of the epoxy-amine adduct may be difficult. Note that q in the above formula (I) can be controlled by, for example, the ratio of the epoxy compound (A) to the amine compound (B) subjected to the reaction, reaction conditions, and the like.
- the bonding position of the nitrogen atom is the carbon atom at the 4-position of the cyclohexane ring
- the bonding position of the hydroxyl group (—OH) bonded to the cyclohexane ring represented by the formula (I) is the carbon atom at the 3-position .
- the bonding positions of the nitrogen atoms (or the bonding positions of the hydroxyl groups) in a plurality of (two or more) cyclohexane rings in the formula (I) may be the same or different.
- the above-mentioned position number is attached
- the epoxy-amine adduct of the present invention is represented by the above formula (I)
- the epoxy-amine adduct may be a mixture of two or more different q.
- the epoxy-amine adduct represented by the above formula (I) is preferably an epoxy-amine adduct represented by the following formula (I-1), more preferably represented by the following formula (I-2).
- X and q in the following formula (I-1) and q in the following formula (I-2) are the same as X and q in the above formula (I), respectively.
- p represents an integer of 1 or more and is the same as p in the above formula (b-1).
- R 3 and R 4 are each a divalent linear, branched, or cyclic aliphatic hydrocarbon group, or a linear or branched chain.
- p is an integer greater than or equal to 2
- each R ⁇ 4 > may be the same and may differ.
- subjected p may be a random type, and may be a block type.
- R 3 and R 4 may be the same group or different groups.
- a resin composition By blending (mixing) a known or conventional resin with the epoxy-amine adduct of the present invention, a resin composition (sometimes referred to as “the resin composition of the present invention”) is obtained.
- a resin composition for example, polyolefin (for example, polyethylene, polypropylene, polybutadiene, etc.), vinyl polymer (for example, acrylic resin, polystyrene, etc.), polyamide (for example, nylon 6, nylon 66, nylon 11).
- the “resin” does not include the epoxy-amine adduct of the present invention.
- the resin composition of this invention does not include the epoxy
- a resin composition using a thermoplastic resin as the resin that is, a resin composition (thermoplastic resin composition) containing at least the epoxy-amine adduct of the present invention and a thermoplastic resin is particularly a curable resin.
- a resin composition for example, a thermosetting resin composition, a photocurable resin composition, etc.
- the resin composition containing at least the epoxy-amine adduct of the present invention and a thermoplastic resin can be particularly preferably used for applications requiring a reduction in molding time (for example, automotive parts).
- the content (blending amount) of the resin in the resin composition of the present invention is not particularly limited, but is preferably 0.1 to 99.9% by weight with respect to the total amount (100% by weight) of the resin composition.
- the amount is preferably 1 to 99% by weight, more preferably 2 to 98% by weight. If the content is less than 0.1% by weight, the heat resistance and mechanical properties (toughness, etc.) of the fiber-reinforced composite material may be insufficient depending on the application. On the other hand, if the content exceeds 99.9% by weight, the adhesion between the resin and the reinforcing fiber in the fiber-reinforced composite material may be insufficient depending on the application.
- the epoxy-amine adduct of the present invention can be used singly or in combination of two or more.
- the content (blending amount) of the epoxy-amine adduct of the present invention in the resin composition of the present invention is not particularly limited, but is preferably 0.1 to 200 parts by weight, more preferably 100 parts by weight of the resin. Is 1 to 100 parts by weight, more preferably 2 to 50 parts by weight.
- the content of the epoxy-amine adduct of the present invention is less than 0.1 parts by weight, the adhesion between the resin and the reinforcing fiber in the fiber-reinforced composite material may be insufficient depending on the application.
- the content of the epoxy-amine adduct of the present invention exceeds 200 parts by weight, the heat resistance and mechanical properties (toughness, etc.) of the fiber reinforced composite material may be insufficient depending on applications.
- the resin composition of the present invention includes, for example, a polymerization initiator (thermal polymerization initiator, photopolymerization initiator, etc.), a curing agent, a curing accelerator, an antifoaming agent.
- a polymerization initiator thermal polymerization initiator, photopolymerization initiator, etc.
- a curing agent a curing accelerator
- an antifoaming agent Agent, leveling agent, coupling agent (silane coupling agent, etc.), surfactant, inorganic filler (silica, alumina, etc.), flame retardant, colorant, antioxidant, ultraviolet absorber, ion adsorbent, pigment, Conventional additives such as a phosphor and a release agent may be included.
- the resin composition of the present invention only needs to contain at least the epoxy-amine adduct of the present invention and a resin, and its production method (preparation method) is not particularly limited. Specifically, for example, it can be prepared by stirring and mixing each component constituting the resin composition at a predetermined ratio.
- a known apparatus for example, a rotation and revolution type mixer, a planetary mixer, a kneader, a dissolver, etc. can be used for stirring and mixing of each component.
- the epoxy-amine adduct in the resin composition of the present invention has high reactivity, and improves the adhesion between the reinforcing fiber such as carbon fiber and the composite material (fiber reinforced composite material) of the resin and the reinforcing fiber.
- it can be preferably used as a resin composition (resin composition for fiber-reinforced composite material) for forming a fiber-reinforced composite material.
- the fiber-reinforced composite material is formed from a prepreg obtained by impregnating or coating the reinforcing fiber with the resin composition of the present invention.
- the resin composition of the present invention is a resin composition containing at least the epoxy-amine adduct of the present invention and a thermoplastic resin
- the resin composition is in a molten state or suitable.
- the reinforcing fiber is impregnated or coated to obtain a prepreg (thermoplastic prepreg), and further, the fiber-reinforced composite material is obtained by molding the prepreg.
- the resin composition of the present invention is a resin composition containing at least the epoxy-amine adduct of the present invention and a curable resin
- the reinforcing fiber is impregnated or applied to the resin composition.
- a fiber-reinforced composite material is obtained by obtaining a prepreg (curable prepreg) and further curing and molding the curable resin in the prepreg.
- the thermoplastic prepreg can be preferably used in applications that require a reduction in molding time (for example, automotive parts applications).
- the reinforcing fiber known or commonly used reinforcing fiber can be used, and is not particularly limited.
- carbon fiber, glass fiber, aramid fiber, boron fiber, graphite fiber, silicon carbide fiber, high-strength polyethylene fiber examples thereof include tungsten carbide fibers and polyparaphenylene benzoxazole fibers (PBO fibers).
- the carbon fiber include polyacrylonitrile (PAN) -based carbon fiber, pitch-based carbon fiber, and vapor-grown carbon fiber.
- PAN polyacrylonitrile
- carbon fiber, glass fiber, and aramid fiber are preferable from the viewpoint of mechanical properties (toughness and the like).
- the said reinforced fiber can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- the reinforcing fiber may be subjected to a known or usual surface treatment such as a coupling treatment, an oxidation treatment, or a coating treatment.
- the form of the reinforcing fiber is not particularly limited, and examples thereof include a filament (long fiber) form, a tow form, a unidirectional material form in which tows are arranged in one direction, a woven form, and a non-woven form. It is done.
- Examples of reinforcing fiber woven fabrics include stitches that prevent unraveling sheets that are aligned in one direction, such as plain weave, twill weave, satin weave, or non-crimp fabric, or sheets that are laminated at different angles. Stitched sheets and the like.
- the content of the reinforcing fiber in the prepreg (thermoplastic prepreg, curable prepreg) of the present invention is not particularly limited and can be appropriately adjusted.
- the prepreg of the present invention is a curable prepreg
- the prepreg is impregnated or coated on the reinforcing fiber with the resin composition of the present invention, and further subjected to heating, active energy ray irradiation, and the like.
- a part of the curable resin in the resin composition may be cured (that is, semi-cured).
- the method for impregnating or coating the reinforcing fiber with the resin composition of the present invention is not particularly limited, and can be carried out by the impregnation or coating method in a known or conventional prepreg manufacturing method.
- the fiber-reinforced composite material of the present invention is formed from the prepreg of the present invention, and the production method thereof is not particularly limited, but known or conventional methods such as hand layup method, prepreg method, RTM method, It can be produced by a pultrusion method, a filament winding method, a spray-up method, a pultrusion method, or the like.
- the fiber-reinforced composite material of the present invention can be used as a material for various structures, and is not particularly limited.
- the epoxy-amine adduct of the present invention has high reactivity with respect to functional groups such as hydroxyl groups, carboxyl groups, and epoxy groups present on the surface of the reinforcing fibers, and the adhesion between the resin and the reinforcing fibers in the fiber-reinforced composite material. Therefore, it can be preferably used as a sizing agent (particularly, a sizing agent for carbon fiber).
- a sizing agent is a process applied (coated) to reinforcing fibers to improve handling in the reinforcing fiber manufacturing process and higher-order processing processes (textile process, prepreg process, and other molding processes). Agent, sometimes referred to as sizing agent.
- the sizing agent containing the epoxy-amine adduct of the present invention may be referred to as “the sizing agent of the present invention”.
- the sizing agent of the present invention only needs to contain the epoxy-amine adduct of the present invention as an essential component, and it contains a solvent, other additives, etc. in addition to the epoxy-amine adduct of the present invention. Alternatively, it may be composed only of the epoxy-amine adduct of the present invention (the epoxy-amine adduct of the present invention itself).
- the solvent that the sizing agent of the present invention may contain is not particularly limited, but water; aliphatic hydrocarbons such as hexane, heptane, and octane; alicyclic hydrocarbons such as cyclohexane; benzene, toluene, xylene, and ethylbenzene Aromatic hydrocarbons such as; halogenated hydrocarbons such as chloroform, dichloromethane, 1,2-dichloroethane; ethers such as diethyl ether, dimethoxyethane, tetrahydrofuran, dioxane; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone; methyl acetate, Esters such as ethyl acetate, isopropyl acetate and butyl acetate; amides such as N, N-dimethylformamide and N, N-dimethylacet
- the sizing agent of the present invention may be a solution (particularly an aqueous solution) or a dispersion (particularly an aqueous dispersion) of the epoxy-amine adduct of the present invention containing water and / or alcohol.
- a solvent can also be used individually by 1 type and can also be used in combination of 2 or more type.
- the sizing agent of the present invention may further contain various additives such as lubricants such as fatty acids, amides and esters; coupling agents such as silane coupling agents and titanium coupling agents.
- lubricants such as fatty acids, amides and esters
- coupling agents such as silane coupling agents and titanium coupling agents.
- Carbon fiber coated with sizing agent By applying (coating) the sizing agent of the present invention to carbon fibers, sizing agent-coated carbon fibers (sometimes referred to as “sizing agent-coated carbon fibers of the present invention”) are obtained.
- the method for applying the sizing agent of the present invention to the carbon fiber is not particularly limited.
- the method of immersing the carbon fiber in the sizing agent of the present invention, or the method of bringing the carbon fiber into contact with the roller to which the sizing agent of the present invention is attached can be mentioned.
- coating of the sizing agent of this invention may be performed with respect to the whole surface of carbon fiber, and may be performed with respect to one part surface. Also, the coating thickness and the coating amount can be adjusted as appropriate, and are not particularly limited.
- heat treatment may be performed as necessary.
- the conditions for the heat treatment are not particularly limited, but the heating temperature is preferably 40 to 300 ° C, more preferably 60 to 250 ° C.
- the heating time can be appropriately adjusted according to the heating temperature, and is not particularly limited, but is preferably 1 second to 60 minutes, and more preferably 5 seconds to 10 minutes.
- the heating temperature can be constant, or can be changed continuously or stepwise. Further, the heat treatment may be performed continuously in one step, or may be performed intermittently in two or more steps.
- the heat treatment is generally performed to accelerate the impregnation of the sizing agent and dry the solvent.
- the heat treatment can be performed by a known or conventional method (for example, heating using a hot air oven).
- the sizing agent-coated carbon fiber of the present invention may be one obtained by applying the sizing agent of the present invention and heat-treating, and further applying the above-described thermoplastic resin, the above-described curable compound (curable resin), or the like. Good. Thereby, depending on the kind of the thermoplastic resin or the curable resin, tack of the sizing agent-coated carbon fiber may be reduced, and handling (handling) may be improved.
- the method of application is not particularly limited, and can be performed, for example, in the same manner as the application of the sizing agent of the present invention to carbon fibers.
- coating may be performed with respect to the whole surface of sizing agent application
- the sizing agent-coated carbon fiber of the present invention is coated with the epoxy-amine adduct of the present invention, it has excellent adhesion to the resin.
- the sizing agent of the present invention has excellent functions as a general sizing agent such as a function of converging carbon fibers and a function of imparting flexibility to the carbon fibers.
- the fiber has good handleability and excellent high-order processability.
- the sizing agent-coated carbon fiber of the present invention has the above characteristics, it is obtained by curing the sizing agent-coated carbon fiber and various matrix resins (for example, the above-described thermoplastic resin and the above-described curable compound (curable resin)).
- the fiber reinforced composite material including the cured product (cured resin, etc.) obtained has excellent heat resistance and mechanical strength, and has high productivity.
- the said fiber reinforced composite material can be manufactured by well-known thru
- the said fiber reinforced composite material can be preferably used as a material of the above-mentioned various structures.
- Example 1 As the epoxy compound (A), 3,4-epoxycyclohexylmethyl (3,4-epoxy) cyclohexanecarboxylate [manufactured by Daicel Corporation, trade name “Celoxide 2021P”] was used, and as the amine compound (B), an amine was used. Terminal polypropylene glycol [manufactured by HUNTSMAN, trade name “JEFFAMINE D-230”] was used. As shown in Table 1, 30.0 parts by weight of the above-described epoxy compound (A) and 35.9 parts by weight of the amine compound (B) were mixed, and then reacted at 160 ° C. with stirring for 2 hours. An epoxy-amine adduct (amine adduct) was obtained.
- Table 1 shows the properties (evaluation results) of the resulting epoxy-amine adduct.
- FIG. 3 shows a chart of 1 H-NMR spectrum of the resulting epoxy-amine adduct. It was also confirmed that the epoxy-amine adduct obtained above was melt-mixed with polycarbonate using a lab plast mill to obtain a press-moldable resin composition.
- Example 2 As the epoxy compound (A), 3,4-epoxycyclohexylmethyl (3,4-epoxy) cyclohexanecarboxylate [manufactured by Daicel Corporation, trade name “Celoxide 2021P”] was used, and as the amine compound (B), an amine was used. Terminal polypropylene glycol [manufactured by HUNTSMAN, trade name “JEFFAMINE D-230”] was used. As shown in Table 1, 20.0 parts by weight of the above-mentioned epoxy compound (A) and 34.6 parts by weight of the amine compound (B) are mixed and then reacted at 160 ° C. with stirring for 2 hours. An epoxy-amine adduct was obtained.
- the obtained epoxy-amine adduct had water solubility.
- Table 1 shows the properties (evaluation results) of the resulting epoxy-amine adduct.
- FIG. 4 shows a chart of 1 H-NMR spectrum of the resulting epoxy-amine adduct. It was also confirmed that the epoxy-amine adduct obtained above was melt-mixed with polycarbonate using a lab plast mill to obtain a press-moldable resin composition.
- Comparative Example 1 Bisphenol A type epoxy resin [manufactured by Nippon Steel Chemical Co., Ltd., trade name “Epototo YD128”] 30.0 parts by weight, and amine-terminated polypropylene glycol [manufactured by HUNTSMAN, trade name “JEFFAMINE D-230”] 41.3 After mixing the parts by weight, both components were reacted by stirring at 160 ° C. for 2 hours. As a result, a resin having no thermoplasticity was obtained.
- the glass transition temperature (Tg) of the epoxy-amine adduct obtained in the examples was measured with a differential scanning calorimeter (DSC) [manufactured by Seiko Instruments Inc.]. The measurement conditions were as follows: temperature increase rate: 10 ° C./min, measurement temperature: ⁇ 50 to 250 ° C., number of scans: 2 times. In addition, the glass transition temperature was calculated
- Viscosity The viscosity at 70 ° C. of the epoxy-amine adduct obtained in the examples was measured with an E-type viscometer [“TV-22” manufactured by Toki Sangyo Co., Ltd.] (measurement temperature: 70 ° C). The results are shown in Table 1. For the epoxy-amine adduct obtained in Example 2, the viscosity at 25 ° C. and the viscosity at 45 ° C. were also measured. The results are shown in Table 1.
- the epoxy-amine adduct obtained in the Examples had a low glass transition temperature and had thermoplasticity. Further, it was liquid at least at 70 ° C. and could be easily mixed with other components (for example, a thermoplastic resin).
- the epoxy-amine adduct obtained in the examples has a —NH— group in the molecule, the reactivity is high, and the adhesion between the resin and the reinforcing fiber (particularly, carbon fiber) can be improved. It is.
- the resin obtained in the comparative example does not have thermoplasticity, it is difficult to mix with other components.
- Example 3 The epoxy-amine adduct obtained in Example 1 is uniformly dissolved in a mixed solution of ethanol and water (ethanol 6%), and the content of the epoxy-amine adduct is about 2% by weight (sizing agent) (That is, the epoxy-amine adduct obtained in Example 1 had solubility in the above mixed solution).
- This sizing agent was applied to the surface-treated carbon fiber by a dipping method and then heat treated at a temperature of 210 ° C. for 90 seconds. After that, when immersed in bisphenol A type epoxy resin [manufactured by Nippon Steel Chemical Co., Ltd., trade name “Epototo YD128”] and treated at 100 ° C. for 30 minutes, a carbon fiber bundle without tack (a sizing agent coating) Carbon fiber bundle) was obtained.
- bisphenol A type epoxy resin manufactured by Nippon Steel Chemical Co., Ltd., trade name “Epototo YD128”
- Example and the comparative example is as follows.
- Epototo YD-128 bisphenol A type epoxy resin, manufactured by Nippon Steel Chemical Co., Ltd.
- the epoxy-amine adduct of the present invention has high reactivity to functional groups such as hydroxyl groups, carboxyl groups, and epoxy groups present on the surface of the reinforcing fiber, and effectively improves the adhesion between the resin and the reinforcing fiber in the fiber-reinforced composite material. Since it can improve, it can use preferably as a sizing agent (especially sizing agent for carbon fibers).
- the resin composition containing the epoxy-amine adduct of the present invention can be preferably used particularly as a resin composition for forming a fiber-reinforced composite material (resin composition for fiber-reinforced composite material).
- the fiber-reinforced composite material of the present invention can be used as a material for various structures, such as aircraft fuselage, main wing, tail wing, moving blade, fairing, cowl, door, etc .; spacecraft motor case , Main wing, etc .; satellite structure; automobile parts such as automobile chassis; railway vehicle structure; bicycle structure; ship structure; wind power blade; pressure vessel; fishing rod; tennis racket; golf shaft; It can be preferably used as a material of a structure such as (for example, a cable core).
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Abstract
Description
また、本発明の他の目的は、反応性が高く、樹脂と強化繊維の密着性に優れた繊維強化複合材料を形成できる樹脂組成物を提供することにある。
さらに、本発明の他の目的は、樹脂と強化繊維の密着性に優れ、高い機械物性(例えば、強靭性)を有する繊維強化複合材料を提供することにある。
さらに、本発明の他の目的は、炭素繊維の高次加工性を向上させることができ、また、炭素繊維とマトリックス樹脂の接着性を向上させることができるサイジング剤を提供することにある。
さらに、本発明の他の目的は、高次加工性に優れ、かつ炭素繊維とマトリックス樹脂の接着性に優れたサイジング剤塗布炭素繊維及び該サイジング剤塗布炭素繊維を含む繊維強化複合材料を提供することにある。
本発明のエポキシ-アミン付加物は、分子内に2個以上のアミノ基を有するエポキシ-アミン付加物であって、分子内に2個以上の脂環式エポキシ基を有するエポキシ化合物(A)(単に「エポキシ化合物(A)」と称する場合がある)と、分子内に2個以上のアミノ基を有するアミン化合物(B)(単に「アミン化合物(B)」と称する場合がある)との反応により得られるエポキシ-アミン付加物である。より詳しくは、本発明のエポキシ-アミン付加物は、エポキシ化合物(A)が有する脂環式エポキシ基と、アミン化合物(B)が有するアミノ基とを反応させて得られる、分子内に2個以上のアミノ基を有するエポキシ-アミン付加物である。なお、本明細書においては、単に「アミノ基」という場合には-NH2(無置換アミノ基)を意味するものとし、「-NH-基」には当該無置換アミノ基(-NH2)は含まれないものとする。
本発明のエポキシ-アミン付加物の原料(前駆体)であるエポキシ化合物(A)は、分子内に2個以上の脂環式エポキシ基を有するポリエポキシ化合物(脂環式エポキシ化合物)である。なお、本明細書における「脂環式エポキシ基」とは、脂環(脂肪族環)を構成する隣接する2つの炭素原子と、酸素原子とで構成されるエポキシ基を意味する。
本発明のエポキシ-アミン付加物の原料(前駆体)であるアミン化合物(B)は、分子内に2個以上のアミノ基(-NH2;無置換アミノ基)を有するポリアミン化合物である。アミン化合物(B)が分子内に有するアミノ基の数は2個以上であればよく、特に限定されないが、2~6個が好ましく、より好ましくは2~5個、さらに好ましくは2個又は3個である。アミノ基の数が6個を超えると、エポキシ化合物(A)との反応で生成するエポキシ-アミン付加物の他の成分に対する配合が困難となる場合がある。
本発明のエポキシ-アミン付加物は、エポキシ化合物(A)とアミン化合物(B)とを反応させることにより製造できる。より具体的には、エポキシ化合物(A)が有する脂環式エポキシ基と、アミン化合物(B)が有するアミノ基とを反応させることにより、本発明のエポキシ-アミン付加物が生成する。
本発明のエポキシ-アミン付加物と、公知乃至慣用の樹脂とを配合(混合)することにより、樹脂組成物(「本発明の樹脂組成物」と称する場合がある)が得られる。上記樹脂としては、特に限定されないが、例えば、ポリオレフィン(例えば、ポリエチレン、ポリプロピレン、ポリブタジエンなど)、ビニル系重合体(例えば、アクリル樹脂、ポリスチレンなど)、ポリアミド(例えば、ナイロン6、ナイロン66、ナイロン11、ナイロン12、ナイロン610、ナイロン612、ナイロン61、ナイロン6T、ナイロン9Tなど)、ポリエステル(例えば、ポリエチレンテレフタレート、ポリブチレンテレフタレート)、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリカーボネート、ポリアセタール、ポリフェニレンオキサイド、ポリフェニレンサルファイド、ポリエーテルスルホン、ポリエーテルエーテルケトンなどの熱可塑性樹脂;エポキシ樹脂、不飽和ポリエステル、ビニルエステル樹脂、アリル樹脂(例えば、ジアリルフタレート樹脂など)、フェノール樹脂、ポリイミド、シアネート樹脂、マレイミド樹脂、ユリア樹脂、メラミン樹脂、シリコーン樹脂などの硬化性樹脂(硬化性化合物)(例えば、熱硬化性樹脂(熱硬化性化合物)、光硬化性樹脂(光硬化性化合物)など)などが挙げられる。但し、上記「樹脂」には本発明のエポキシ-アミン付加物は含まれない。なお、本発明の樹脂組成物において上記樹脂は1種を単独で使用することもできるし、2種以上を組み合わせて使用することもできる。
本発明のエポキシ-アミン付加物は、上述のように、強化繊維の表面に存在する水酸基、カルボキシル基、エポキシ基などの官能基に対する反応性が高く、繊維強化複合材料における樹脂と強化繊維の密着性を効果的に向上させることができるため、サイジング剤(特に、炭素繊維用サイジング剤)としても好ましく使用することができる。なお、サイジング剤とは、強化繊維の製造工程や、高次加工工程(織物工程、プリプレグ工程、その他の成形工程)での取り扱い性を向上させるために強化繊維に塗布(塗工)される処理剤であり、収束剤と称される場合もある。本明細書においては、本発明のエポキシ-アミン付加物を含むサイジング剤を「本発明のサイジング剤」と称する場合がある。
本発明のサイジング剤を炭素繊維に塗布(塗工)することによって、サイジング剤塗布炭素繊維(「本発明のサイジング剤塗布炭素繊維」と称する場合がある)が得られる。
エポキシ化合物(A)として、3,4-エポキシシクロヘキシルメチル(3,4-エポキシ)シクロヘキサンカルボキシレート[(株)ダイセル製、商品名「セロキサイド2021P」]を使用し、アミン化合物(B)として、アミン末端ポリプロピレングリコール[HUNTSMAN社製、商品名「JEFFAMINE D-230」]を使用した。
表1に示すように、上述のエポキシ化合物(A)30.0重量部と、アミン化合物(B)35.9重量部とを混合し、その後、160℃で2時間攪拌しながら反応させることにより、エポキシ-アミン付加物(アミンアダクト)を得た。
得られたエポキシ-アミン付加物の性状(評価結果)を表1に示す。また、図3には、得られたエポキシ-アミン付加物の1H-NMRスペクトルのチャートを示す。また、上記で得られたエポキシ-アミン付加物を、ラボプラストミルによりポリカーボネートと溶融混合することにより、プレス成形可能な樹脂組成物が得られることを確認した。
エポキシ化合物(A)として、3,4-エポキシシクロヘキシルメチル(3,4-エポキシ)シクロヘキサンカルボキシレート[(株)ダイセル製、商品名「セロキサイド2021P」]を使用し、アミン化合物(B)として、アミン末端ポリプロピレングリコール[HUNTSMAN社製、商品名「JEFFAMINE D-230」]を使用した。
表1に示すように、上述のエポキシ化合物(A)20.0重量部と、アミン化合物(B)34.6重量部とを混合し、その後、160℃で2時間攪拌しながら反応させることにより、エポキシ-アミン付加物を得た。なお、得られたエポキシ-アミン付加物は水溶性を有していた。
得られたエポキシ-アミン付加物の性状(評価結果)を表1に示す。また、図4には、得られたエポキシ-アミン付加物の1H-NMRスペクトルのチャートを示す。また、上記で得られたエポキシ-アミン付加物を、ラボプラストミルによりポリカーボネートと溶融混合することにより、プレス成形可能な樹脂組成物が得られることを確認した。
ビスフェノールA型エポキシ樹脂[新日鐵化学(株)製、商品名「エポトートYD128」]30.0重量部、及びアミン末端ポリプロピレングリコール[HUNTSMAN社製、商品名「JEFFAMINE D-230」]41.3重量部を混合し、その後、160℃で2時間攪拌させることによって両成分を反応させた。その結果、熱可塑性を有しない樹脂が得られた。
実施例で得られたエポキシ-アミン付加物について、下記の評価を実施した。
実施例で得られたエポキシ-アミン付加物のガラス転移温度(Tg)を、示差走査熱量計(DSC)[セイコーインスツルメント(株)製]で測定した。なお、測定条件は、昇温速度:10℃/分、測定温度:-50~250℃、スキャン回数:2回とした。なお、ガラス転移温度は、2回目のスキャンで得られたDSC曲線より求めた。結果を表1に示す。
実施例で得られたエポキシ-アミン付加物の70℃における粘度を、E型粘度計[「TV-22」、東機産業(株)製]にて測定した(測定温度:70℃)。結果を表1に示す。
また、実施例2で得られたエポキシ-アミン付加物については、25℃における粘度、45℃における粘度も同様に測定した。結果を表1に示す。
実施例1で得られたエポキシ-アミン付加物を溶離液(30mM臭化リチウムを添加したジメチルホルムアミド(DMF))に溶解させた後、0.45μmメンブレンフィルターでろ過したもの(ろ液)を分子量の測定サンプルとして用いた。上記測定サンプルを用い、エポキシ-アミン付加物の重量平均分子量(Mw)、数平均分子量(Mn)、ピークトップ分子量(Mp)、分子量分布(Mw/Mn)を測定した。結果を表1に示す。なお、上記分子量(Mw、Mn、Mp)は、標準ポリスチレン換算の値として求めた。
これに対して、比較例で得られた樹脂は熱可塑性を有しないため、他の成分との混合が困難なものであった。
実施例1で得られたエポキシ-アミン付加物をエタノールと水の混合液(エタノール6%)に均一に溶解させ、該エポキシ-アミン付加物の含有量が約2重量%の溶液(サイジング剤)を得た(即ち、実施例1で得られたエポキシ-アミン付加物は上記混合液に対する溶解性を有していた)。このサイジング剤を浸漬法により、表面処理された炭素繊維に塗布した後、210℃の温度で90秒間熱処理をした。その後、続いて、ビスフェノールA型エポキシ樹脂[新日鐵化学(株)製、商品名「エポトートYD128」]に浸漬し、100℃で30分間処理したところ、タックの無い炭素繊維束(サイジング剤塗布炭素繊維束)が得られた。
[エポキシ化合物]
セロキサイド2021P:3,4-エポキシシクロヘキシルメチル(3,4-エポキシ)シクロヘキサンカルボキシレート、(株)ダイセル製
エポトートYD-128:ビスフェノールA型エポキシ樹脂、新日鐵化学(株)製
[アミン化合物]
JEFFAMINE D-230:アミン末端ポリプロピレングリコール、HUNTSMAN社製
Claims (11)
- 分子内に2個以上のアミノ基を有するエポキシ-アミン付加物であって、
分子内に2個以上の脂環式エポキシ基を有するエポキシ化合物(A)と、分子内に2個以上のアミノ基を有するアミン化合物(B)との反応により得られるエポキシ-アミン付加物。 - 請求項1~4のいずれか一項に記載のエポキシ-アミン付加物と、熱可塑性樹脂とを含む樹脂組成物。
- 繊維強化複合材料用樹脂組成物である請求項5に記載の樹脂組成物。
- 請求項6に記載の樹脂組成物を強化繊維に含浸又は塗工して得られるプリプレグ。
- 請求項7に記載のプリプレグより形成される繊維強化複合材料。
- 請求項1~4のいずれか一項に記載のエポキシ-アミン付加物を含むサイジング剤。
- 請求項9に記載のサイジング剤を炭素繊維に塗布して得られるサイジング剤塗布炭素繊維。
- 請求項10に記載のサイジング剤塗布炭素繊維と、熱可塑性樹脂又は硬化性化合物を硬化させて得られる硬化物とを含む繊維強化複合材料。
Priority Applications (6)
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CN201380025429.XA CN104284916B (zh) | 2012-05-16 | 2013-04-30 | 环氧基‑胺加成物、树脂组合物、上胶剂、涂布有上胶剂的碳纤维及纤维强化复合材料 |
KR1020147030691A KR20150020318A (ko) | 2012-05-16 | 2013-04-30 | 에폭시-아민 부가물, 수지 조성물, 사이징제, 사이징제 도포 탄소 섬유 및 섬유 강화 복합재료 |
EP13790552.7A EP2851381B1 (en) | 2012-05-16 | 2013-04-30 | Epoxy-amine adduct, resin composition, sizing agent, carbon fiber coated with sizing agent, and fiber-reinforced composite material |
US14/401,477 US9388294B2 (en) | 2012-05-16 | 2013-04-30 | Epoxy-amine adduct, resin composition, sizing agent, carbon fiber coated with sizing agent, and fiber-reinforced composite material |
JP2014515568A JP5681328B2 (ja) | 2012-05-16 | 2013-04-30 | エポキシ−アミン付加物、樹脂組成物、サイジング剤、サイジング剤塗布炭素繊維、及び繊維強化複合材料 |
US15/191,041 US9777135B2 (en) | 2012-05-16 | 2016-06-23 | Epoxy-amine adduct, resin composition, sizing agent, carbon fiber coated with sizing agent, and fiber-reinforced composite material |
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US15/191,041 Division US9777135B2 (en) | 2012-05-16 | 2016-06-23 | Epoxy-amine adduct, resin composition, sizing agent, carbon fiber coated with sizing agent, and fiber-reinforced composite material |
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JP2016003412A (ja) * | 2014-06-16 | 2016-01-12 | 帝人株式会社 | サイジング剤付着繊維束およびその製造方法 |
JP2019119937A (ja) * | 2017-12-28 | 2019-07-22 | 株式会社ダイセル | 有機繊維用サイジング剤、有機繊維、織物、及び積層物 |
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WO2013172200A1 (ja) * | 2012-05-16 | 2013-11-21 | 株式会社ダイセル | エポキシ-アミン付加物、樹脂組成物、サイジング剤、サイジング剤塗布炭素繊維、及び繊維強化複合材料 |
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KR102648967B1 (ko) * | 2023-09-14 | 2024-03-20 | 주식회사 하이퍼콘 | 산업부산물을 이용한 전자파차폐 콘크리트 조성물 및 제조방법 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2015151348A1 (ja) * | 2014-04-04 | 2015-10-08 | 株式会社ダイセル | エポキシ-アミン付加物、熱可塑性樹脂組成物、サイジング剤、サイジング剤塗布炭素繊維、及び繊維強化複合材料 |
JPWO2015151348A1 (ja) * | 2014-04-04 | 2017-04-13 | 株式会社ダイセル | エポキシ−アミン付加物、熱可塑性樹脂組成物、サイジング剤、サイジング剤塗布炭素繊維、及び繊維強化複合材料 |
US10611876B2 (en) | 2014-04-04 | 2020-04-07 | Daicel Corporation | Epoxy-amine adduct, thermoplastic resin composition, sizing agent, sizing agent coated carbon fiber, and fiber-reinforced composite material |
JP2016003412A (ja) * | 2014-06-16 | 2016-01-12 | 帝人株式会社 | サイジング剤付着繊維束およびその製造方法 |
JP2019119937A (ja) * | 2017-12-28 | 2019-07-22 | 株式会社ダイセル | 有機繊維用サイジング剤、有機繊維、織物、及び積層物 |
JP7083641B2 (ja) | 2017-12-28 | 2022-06-13 | 株式会社ダイセル | 有機繊維用サイジング剤、有機繊維、織物、及び積層物 |
Also Published As
Publication number | Publication date |
---|---|
CN104284916A (zh) | 2015-01-14 |
US20150111994A1 (en) | 2015-04-23 |
CN107043454A (zh) | 2017-08-15 |
EP3287478A1 (en) | 2018-02-28 |
US9777135B2 (en) | 2017-10-03 |
US9388294B2 (en) | 2016-07-12 |
TWI585121B (zh) | 2017-06-01 |
US20160369087A1 (en) | 2016-12-22 |
TW201406819A (zh) | 2014-02-16 |
EP2851381A4 (en) | 2015-12-30 |
EP2851381B1 (en) | 2020-02-19 |
KR20150020318A (ko) | 2015-02-25 |
EP2851381A1 (en) | 2015-03-25 |
JPWO2013172200A1 (ja) | 2016-01-12 |
CN107043454B (zh) | 2019-08-20 |
CN104284916B (zh) | 2016-12-14 |
JP5681328B2 (ja) | 2015-03-04 |
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