Prepreg for fiber reinforced plastic and production process

摘要

Provided is a shape memory polymer composition for FRP (fiber reinforced plastic) which contains a bifunctional isocyanate and/or a trifunctional isocyanate, and a polyol containing at least 50 wt. % of polypropylene glycol and having an average molecular weight of from 100 to 550 at a molar ratio, as a functional group, of liquid isocyanate: polyol = 0.9 to 1.1 : 1.0. The shape memory polymer does not contain any chain extender.