MATRIX RESIN COMPOSITION FOR FIBER-REINFORCED PLASTIC AND METHOD FOR PRODUCING FIBER-REINFORCED PLASTIC

摘要

PROBLEM TO BE SOLVED: To provide a fiber-reinforced plastic (FRP) molded form incorporated with reinforcing fibers in high density and having high mechanical strength and properties such as inflatableness through developing a thermosetting resin with extended pot life. SOLUTION: The one objective matrix resin composition for fiber-reinforced plastics comprises a bifunctional or trifunctional liquid diisocyanate, a bifunctional polyol and an active hydrogen group-containing bifunctional chain extender in the functional group-based molar ratio of (5.0-1.0):1.0:(4.0-0). The other objective method for producing the fiber-reinforced plastic molded form comprises impregnating a fibrous material with the resin composition followed by curing the composition.