Epoxy resin composition, prepreg, and fiber-reinforced composite material

Patent metadata

Field	Value
Publication number	US-9963589-B2
Application number	US-201414897393-A
Country	US
Kind code	B2
Filing date	Jul 24, 2014
Priority date	Jul 26, 2013
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

An epoxy resin composition comprising the following constituents [A], [B], and [C]:
[A] an epoxy resin having a structure represented by a formula (1);

in which a ring Z represents a condensed polycyclic aromatic hydrocarbon ring, R 1 and R 2 represent a substituent, R 3 represents a hydrogen atom or a methyl group, k is an integer of 0 to 4, m is an integer of 0 or more, and n is an integer of 1 or more;

[B] at least one resin selected from the group consisting of the following [Bx], [By] and [Bz];

[Bx] a bisphenol type epoxy resin;

[By] an amine type epoxy resin; and

[Bz] a thermoplastic resin;

[C] a polyamine curing agent.

Provided is an epoxy resin composition which provides a cured product having excellent heat resistance, toughness and elastic modulus.

First claim

The invention claimed is:

1. An epoxy resin composition comprising:
20 to 40 parts by mass of [A] an epoxy resin having a structure represented by formula (1)

in which each ring Z represents a condensed polycyclic aromatic hydrocarbon ring selected from a naphthalene ring and an anthracene ring, R 1 and R 2 represent a substituent, R 3 represents a hydrogen atom or a methyl group, k is an integer of 0 to 4, m is an integer of 0 to 6 for a naphthalene ring and 0 to 8 for an anthracene ring, n is an integer of 1 to 7 for a naphthalene ring and 1 to 9 for an anthracene ring, and m+n is an integer of 1 to 7 for a naphthalene ring and 1 to 9 for an anthracene ring;
20 to 50 parts by mass of [Bx] a bisphenol type epoxy resin;
10 to 50 parts by mass of [By] an amine type epoxy resin; and
[C] a polyamine curing agent;
wherein [A], [Bx], and [By] are present in a combined amount of 100 parts by mass.

2. The epoxy resin composition according to claim 1 , further comprising 2 to 30 parts by mass of [Bz] a thermoplastic resin.

3. The epoxy resin composition according to claim 1 , further comprising 2 to 15 parts by mass of [D] an elastomer.

4. The epoxy resin composition according to claim 1 , wherein its complex viscosity at 80° C. is 0.1 to 200 Pa·s.

5. The epoxy resin composition according to claim 1 , wherein in formula (1) k is 0 and m is an integer of 0 to 1, and R 2 represents a substituent selected from the group consisting of hydrocarbon, alkoxy, cycloalkoxy, aryloxy, aralkyloxy, acyl, halogen, nitro, cyano and substituted amino groups.

6. The epoxy resin composition according to claim 5 , wherein the amine type epoxy resin [By] is selected from tetraglycidyldiaminodiphenyl methane, tetraglycidyldiaminodiphenyl sulfone, triglycidylaminophenol, triglycidylaminocresol, diglycidylaniline, diglycidyltoluidine, tetraglycidylxylylenediamine, a halogen-substituted product thereof, an alkyl-substituted product thereof, and a hydrogenated product thereof.

7. The epoxy resin composition according to claim 1 , wherein the amine type epoxy resin [By] is selected from tetraglycidyldiaminodiphenyl methane, tetraglycidyldiaminodiphenyl sulfone, triglycidylaminophenol, triglycidylaminocresol, diglycidylaniline, diglycidyltoluidine, tetraglycidylxylylenediamine, a halogen-substituted product thereof, an alkyl-substituted product thereof, and a hydrogenated product thereof.

8. A prepreg formed by impregnating reinforcing fibers with the epoxy resin composition according to claim 1 .

9. The prepreg according to claim 8 , wherein the reinforcing fibers are carbon fibers.

10. A fiber-reinforced composite material containing reinforcing fibers and a cured product of an epoxy resin composition, wherein the epoxy resin composition is the epoxy resin composition according to claim 1 .

Assignees

• Toray Industries

Inventors

• Nagano Maki
• Fuse Ayako
• Tomioka Nobuyuki

Classifications

• C08J2400/22

  Thermoplastic resins · CPC title

• C08J2400/26

  Elastomers · CPC title

• C08J2477/00

  Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers · CPC title

• C08J2363/00

  Characterised by the use of epoxy resins; Derivatives of epoxy resins · CPC title

• C08L63/00 Primary

  Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title