公开(公告)号：US20140309337A1

公开(公告)日：2014-10-16

申请号：US14353441

申请日：2012-12-25

Applicant: TORAY INDUSTRIES, INC.

Inventor： Maki Nagano ,  Yuko Shimizu ,  Nobuyuki Tomioka

IPC: C08L63/00

CPC classification number: C08L63/00 ,  C08G59/28 ,  C08G59/32 ,  C08G59/5033 ,  C08J5/24 ,  C08J2363/00 ,  C08L53/00 ,  C08L101/00

Abstract: Provided are: a fiber-reinforced composite material which is suppressed in morphology variation due to the molding conditions, while having excellent mode I interlaminar fracture toughness and excellent wet heat resistance; an epoxy resin composition for obtaining the fiber-reinforced composite material; and a prepreg which is obtained using the epoxy resin composition. An epoxy resin composition for fiber-reinforced composite materials, which contains at least the following constituent elements [A]-[F], and which is characterized by containing 5-25 parts by mass of constituent element [C] and 2-15 parts by mass of constituent element [E] per 100 parts by mass of the total epoxy resin blended therein. [A] A bifunctional amine type epoxy resin. [B] A tetrafunctional amine type epoxy resin. [C] A bisphenol F type epoxy resin having an epoxy equivalent weight of 450-4,500. [D] An aromatic amine curing agent. [E] A block copolymer having a reactive group that can be reacted with as epoxy resin. [F] Thermoplastic resin particles that are insoluble in an epoxy resin.

Abstract translation: 提供：纤维增强复合材料，其由于成型条件而抑制形态变化，同时具有优异的模式I层间断裂韧性和优异的耐湿热性; 用于获得纤维增强复合材料的环氧树脂组合物; 和使用该环氧树脂组合物得到的预浸料坯。 至少含有以下组成元素[A] - [F]的纤维增强复合材料用环氧树脂组合物，其特征在于，含有5〜25质量份的构成元素[C]和2〜15份 的构成元素[E] / 100质量份混合的总环氧树脂。 [A]双官能胺型环氧树脂。 [B]四官能胺型环氧树脂。 [C]环氧当量为450〜4500的双酚F型环氧树脂。 [D]芳香胺固化剂。 [E]具有可与环氧树脂反应的反应性基团的嵌段共聚物。 [F]不溶于环氧树脂的热塑性树脂颗粒。

公开(公告)号：US09676936B2

公开(公告)日：2017-06-13

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: B32B27/04 ,  B32B27/20 ,  B32B27/38 ,  C08L63/00 ,  C08L77/00 ,  C08L29/04 ,  C08J5/24

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].