申请人:TORAY INDUSTRIES, INC.
公开号:US10400076B2
公开(公告)日:2019-09-03
An epoxy resin composition including [A1] a hardener represented by Formula (1), and [B] an aromatic epoxy resin having tri- or higher functionality, wherein a carbon nuclear relaxation time T1C corresponding to a benzene ring carbon atom in the main backbone of Formula (1) assigned to 130 ppm in a solid-state 13C-NMR spectrum is 42 seconds or longer, and a prepreg and a carbon fiber-reinforced composite material obtained using the epoxy resin composition:
wherein X represents any one selected from —CH2—, —O—, —CO—, —C(═O)O—, —S—, —SO2—, and —NHC(═O)—; n represents 1 to 5; and R1 to R6 each represent at least one selected from the group consisting of a hydrogen atom, an aliphatic hydrocarbon group having 1 to 4 carbon atoms, an alicyclic hydrocarbon group having 4 or less carbon atoms, and an a halogen atom, wherein when X is —C(═O)O— or —NHC(═O)—, X may be in either direction.
Provided are an epoxy resin composition that provides a carbon fiber-reinforced composite material excellent in tensile strength and compression strength and suitable as a structural material, a prepreg, and a carbon fiber-reinforced composite material.
一种环氧树脂组合物,包括[A1]由式(1)表示的固化剂和[B]具有三官能度或更高官能度的芳香族环氧树脂,其中对应于式(1)主骨架中苯环碳原子的碳核弛豫时间 T1C 在固态 13C-NMR 光谱中分配到 130 ppm 的时间为 42 秒或更长,以及使用该环氧树脂组合物获得的预浸料和碳纤维增强复合材料:
其中 X 代表选自-CH2-、-O-、-CO-、-C(═O)O-、-S-、-SO2- 和-NHC(═O)-的任一种;n 代表 1 至 5;和 R1 至 R6 各自代表至少一个选自氢原子、具有 1 至 4 个碳原子的脂族烃基、具有 4 个或更少碳原子的脂环烃基和卤素原子组成的组,其中当 X 为 -C(═O)O- 或 -NHC(═O)- 时,X 可在任一方向上。
本发明提供了一种环氧树脂组合物,它能提供抗拉强度和压缩强度优异的碳纤维增强复合材料,并适用于结构材料、预浸料和碳纤维增强复合材料。