SHEET MOLDING COMPOUND, FIBER-REINFORCED COMPOSITE MATERIAL AND METHOD FOR PRODUCING FIBER-REINFORCED COMPOSITE MATERIAL

摘要

Provided are: a sheet molding compound which is capable of suppressing the formation of burrs, while having excellent handling properties and fluidity of a matrix resin during press molding, and which enables the achievement of a fiber-reinforced composite material that has excellent mechanical characteristics and heat resistance; a fiber-reinforced composite material that has excellent mechanical characteristics and heat resistance; and a method for producing this fiber-reinforced composite material. A sheet molding compound which contains an epoxy resin composition and reinforcing fibers, and which is configured such that: the epoxy resin composition contains component (A), component (B) and component (C); and the ratio of the tetrahydrofuran-insoluble fraction of epoxy resin components is less than 50% by mass. Component (A): an epoxy resin component having a peak top molecular weight of 500 or less Component (B): an epoxy resin component having a peak top molecular weight of more than 500 but 10,000 or less, while having a (weight average molecular weight)/(number average molecular weight) ratio of 1.2 or more Component (C): an epoxy resin curing agent A fiber-reinforced composite material which uses this sheet molding compound; and a method for producing this fiber-reinforced composite material.