| 摘要 |
PROBLEM TO BE SOLVED: To provide an epoxy resin composition for a fiber-reinforced composite material, which has a long pot life and enables molding for a long time, while the composition having a low viscosity so that a fiber can be impregnated at room temperature.SOLUTION: An epoxy resin composition for a fiber-reinforced composite material includes: an epoxy resin which is a mixture of a bisphenol A-type epoxy resin and a phenol novolac-type epoxy resin or a cresol novolac-type epoxy resin; a curing agent comprising (A) 3,5-diethyltoluene-2,4-diamine and (B) 3,5-diethyltoluene-2,6-diamine; and a curing catalyst comprising 2,5-di-tert-butylhydroquinone. A mass ratio, (A/B), of the (A) component and the (B) component is 2 or more and 5 or less.SELECTED DRAWING: None |
