EPOXY-RESIN COMPOSITION AND FILM, PREPREG, AND FIBER-REINFORCED PLASTIC USING SAME

摘要

The present invention pertains to: an epoxy resin composition containing the belowmentioned components (A), (B), (D), and (E); and a film, prepreg, and fiber-reinforced plastic using the epoxy resin composition. By means of the present invention, it is possible to provide: the epoxy resin composition, which can have both workability at ordinary temperatures of a prepreg and the suppression of voids during molding; and a fiber-reinforced plastic having superior mechanical characteristics and particularly superior fracture toughness and heat resistance. Component (A) is an epoxy resin having an oxazolidone ring structure in the molecule. Component (B) is a bisphenol-based di-functional epoxy resin having a number average molecular weight of 600-1300 inclusive and not having an oxazolidone ring structure in the molecule. Component (D) is a triblock copolymer. Component (E) is a curing agent.