Epoxy resin compostions for fiber-reinforced composite materials, prepregs and fiber-reinforced composite materials

摘要

Epoxy resin compositions for fiber-reinforced composite materials comprise at least the constituents [A] an epoxy resin comprising 70 parts by weight or more, per 100 parts by weight of the epoxy resin, of a bi-functional epoxy resin, [B] fine particles comprising a rubber phase and substantially insoluble in epoxy resins and [C] a curing agent. The compositions are suitable for prepregs for production of fiber-reinforced composite materials having high impact resistance and heat resistance.