公开(公告)号：US20150344686A1

公开(公告)日：2015-12-03

申请号：US14759570

申请日：2014-01-24

Applicant: TORAY INDUSTRIES, INC.

Inventor： Yuko SHIMIZU ,  Hiroshi KOBAYASHI ,  Nobuyuki TOMIOKA ,  Hiroshi TAKEZAKI ,  Shirou HONDA

IPC: C08L63/00 ,  C08L29/04 ,  C08L77/00

CPC classification number: C08L63/00 ,  C08J5/24 ,  C08J2363/00 ,  C08L29/04 ,  C08L77/00

Abstract: The invention provides a prepreg that can give a fiber-reinforced composite material exhibiting stable and excellent interlaminar fracture toughness and impact resistance under wide molding conditions. The prepreg includes at least a reinforcement fiber [A], a thermosetting resin [B], and the following component [C] wherein 90% or more of the material [C] is present inside a region of the prepreg that extends from any surface of the prepreg to a prepreg site having, from the surface, a depth of 20% of the thickness of the prepreg. The component [C] satisfies requirements that (i) the storage elastic modulus G′ of the material constituting the particles is more than 1 MPa, and 70 MPa or less at 180° C., and that (ii) the ratio of the storage elastic modulus G′ of the material constituting the particles at 160° C. to the storage elastic modulus G′ of the material at 200° C. ranges from 1 to 5; and is insoluble in the thermosetting resin [B].

Abstract translation: 本发明提供一种预浸料，其可以在宽的成型条件下得到纤维增强复合材料，其表现出稳定且优异的层间断裂韧性和耐冲击性。 预浸料坯至少包括增强纤维[A]，热固性树脂[B]和以下成分[C]，其中90％以上的材料[C]存在于从任何表面延伸的预浸料坯的区域内 的预浸料坯到预浸料部位，其表面具有预浸料坯厚度的20％的深度。 组分[C]满足（i）构成颗粒的材料的储能弹性模量G'大于1MPa，在180℃下为70MPa以下的要求，（ii）存储 在160℃下构成颗粒的材料的弹性模量G'与材料在200℃下的储能弹性模量G'在1至5之间; 并且不溶于热固性树脂[B]。

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)