EPOXY RESIN COMPOSITION FOR FIBER-REINFORCED COMPOSITE MATERIAL, PREPREG, AND FIBER-REINFORCED COMPOSITE MATERIAL

摘要

Disclosed is a fiber-reinforced composite material which has excellent heat resistance and strength characteristics, while being suppressed in the amount of volatile portions during when the composite material is cured. Also disclosed are an epoxy resin composition which is used for obtaining the fiber-reinforced composite material, and a prepreg which is obtained using the epoxy resin composition. Specifically disclosed is an epoxy resin composition which contains [A] an epoxy resin having two or more four- or more membered ring structures and at least one amine type glycidyl group or ether type glycidyl group that is directly bonded to a ring structure, [B] a tri- or higher functional epoxy resin, and [C] a curing agent. Also specifically disclosed are a prepreg which is obtained by impregnating a reinforcing fiber with the epoxy resin composition, and a fiber-reinforced composite material which is obtained by curing the prepreg.