RESIN COMPOSITION FOR COMPOSITE MATERIAL, INTERMEDIATE MATERIAL FOR COMPOSITE MATERIAL AND COMPOSITE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a resin composition for a composite material which can furnish the composite material with an excellent resistant power to a large deformation, an intermediate material for a composite material and a composite material having excellent mechanical properties. SOLUTION: The resin composition comprises an insocyanate modified epoxy resin of 70-150 pts.wt., a copolymerized polyester resin of 3-45 pts.wt. and an epoxy resin curing agent of 5-25 pts.wt. based on a bisphenol A type and/or a bisphenol F type epoxy resin of 100 pts.wt. The resin composition comprises a phenol novolac type and/or a cresol novolac type epoxy resin of 85 pts.wt. or less in addition to the above resin components, wherein this resin composition contains the isocyanate modified epoxy resin of 50-150 pts.wt. The resin composition contains a defoaming agent of 1-1,000 ppm based on a total weight of the composition in addition to the above resin components.