Provided is an epoxy resin composition that gives a cured product having improved elastic modulus and improved nominal strain at compressive fracture. Also provided by using the epoxy resin composition is a fiber-reinforced composite material having excellent compression strength and interlayer toughness. The epoxy resin composition contains at least the following constituent components [A], [B] and [C]. [A] A specific ortho type epoxy resin. [B] At least one component selected from the group consisting of: thermoplastic resins that are compatible with the epoxy resin [A]; and core-shell type polymers. [C] An amine curing agent.
本发明提供了一种环氧
树脂组合物,其固化产品的弹性模量和压缩断裂标称应变均有所改善。通过使用该环氧
树脂组合物,还可提供一种具有优异压缩强度和层间韧性的纤维增强复合材料。环氧
树脂组合物至少包含以下成分[A]、[B]和[C]。[A] 特定的正交型环氧
树脂。[B] 至少一种选自以下组别的成分:与环氧
树脂[A]相容的热塑性
树脂;芯壳型聚合物。[C] 一种
胺类固化剂。