公开(公告)号：US20230027417A1

公开(公告)日：2023-01-26

申请号：US17785582

申请日：2021-01-27

Applicant: TORAY INDUSTRIES, INC.

Inventor： Ko MATSUKAWA ,  Shizue KOYANAGI ,  Masanori HIRANO ,  Nobuyuki TOMIOKA

IPC: C08J5/24 ,  C08K7/14 ,  C08K7/06

Abstract: The purpose of the present invention is to provide: a molding material from which a carbon fiber reinforced composite material having excellent impact resistance and tensile strength is obtained; and a molding material from which a glass fiber reinforced composite material, that has high bending strength and impact resistance, has excellent weather resistance, and can suppress a decrease in bending strength after water absorption, is obtained. In order to achieve the purpose, the molding material according to the present invention is a molding material formed of an epoxy resin composition and a carbon fiber and/or a glass fiber, wherein the epoxy resin composition includes all of [A] to [C], the carbon fiber satisfies conditions [a] and [b], and the glass fiber has a surface functional group capable of forming a covalent bond with an isocyanate group. [A] Epoxy resin having at least two oxylan groups in molecule [B] Epoxy resin curing agent having at least two isocyanate groups in molecule [C] Catalyst [a] Having substantially perfect circular cross section [b] Average fiber diameter of 4.0-8.0 μm

公开(公告)号：US20170306117A1

公开(公告)日：2017-10-26

申请号：US15509968

申请日：2015-08-27

Applicant: TORAY INDUSTRIES, INC.

Inventor： Ayako FUSE ,  Nobuyuki TOMIOKA ,  Shizue KOYANAGI ,  Nobuyuki ARAI ,  Shirou HONDA

IPC: C08J5/24 ,  C08G59/38 ,  C08G59/24 ,  C08J5/04 ,  C08L63/00 ,  C08G59/32 ,  C08G59/50

CPC classification number: C08J5/24 ,  C08G59/245 ,  C08G59/28 ,  C08G59/3227 ,  C08G59/38 ,  C08G59/5033 ,  C08G59/504 ,  C08J5/042 ,  C08J2363/02 ,  C08J2463/00 ,  C08J2477/02 ,  C08J2481/06 ,  C08L63/00 ,  C08L2205/02 ,  C08L2205/035 ,  C08L77/00 ,  C08L81/06

Abstract: Provided is an epoxy resin composition with improved heat resistance and resin elongation. Further provided is a fiber-reinforced composite material which uses the epoxy resin composition and thereby excels in compression strength in high-temperature environments and interlaminar toughness. The epoxy resin composition comprises the constituents [A], [B] and [C], 8-40 mass % of [B] is contained in the epoxy resin composition. The number of moles of active hydrogen contained in [C] is 1.05-2.0 times the number of moles of epoxy groups contained in the entire epoxy resin composition, in a cured resin formed by curing the epoxy resin composition and having a degree of curing of at least 90% obtained by DSC (differential scanning catorimetry), [A], [B] and [C] form a monolayer structure, or a phase separation structure of less than 500 nm. The rubber state modulus of elasticity Y (MPa) and glass transition temperature X (° C.) obtained by DMA (dynamic mechanical analysis) of the cured resin satisfy formula (1). [A] amine type epoxy resin [B] thermoplastic resin [C] aromatic amine 0.19X/° C.-31.5≦Y/MPa≦0.19X/° C.-27   (1)