| abstract |
The present invention is an epoxy resin composition comprising an epoxy resin [A1], an epoxy resin [B1], an epoxy resin [C1], and a curing agent [D], wherein [A1] is a bisphenol-type epoxy resin having a softening point of 90 ° C. or higher, [B1] ] Is a trifunctional or higher amine epoxy resin, and [C1] is a bisphenol F-type epoxy resin having a number average molecular weight of 450 or less, and epoxy resins [A1] to [C1] are each [A1] based on 100 parts by mass of the total epoxy resin component. ] It is related with the epoxy resin composition which satisfy | fills 20-50 mass parts, [B1] 30-50 mass parts, and [C1] 10-40 mass parts. The present invention provides an epoxy resin composition which forms a cured resin having excellent elastic modulus and toughness, and has low viscosity and excellent impregnation between reinforcing fibers, and a prepreg and fiber reinforced composite material using the epoxy resin composition. do. |