| abstract |
The present invention provides good workability during refrigerated transportation, can suppress the increase in viscosity for a long time and is stable even at room temperature, is excellent in impregnation into reinforcing fibers, can perform sufficient high-speed curing at a high temperature of 180°C, and In the mold release step after molding, the resin is sufficiently cured, and high heat resistance is imparted to the epoxy resin composition, which can be smoothly released from the mold, and the fiber-reinforced composite material using the epoxy resin composition. The epoxy resin composition for fiber-reinforced composite materials of the present invention is an epoxy resin composition containing an epoxy resin and a curing agent used in the production of fiber-reinforced composite materials, and contains tetraglycidyl diaminodiaminodicarbonate in a specific ratio Phenylmethane [A], 4,4'-methylenebis(2-isopropyl-6-methylaniline) [B], and bisphenol F-type epoxy resin [C], and, in 30 When the resin viscosity at °C and 80°C is η 30 and η 80 (unit: mPa·s), 200≦η 30 /η 80 ≦500 is satisfied, and 50≦η 80 ≦180 is satisfied. |