POLYURETHANE COMPOSITIONS FOR COMPOSITE STRUCTURES

摘要

A polyurethane composition that includes a polyisocyanate; and a branched polyol that reacts with the polyisocyanate at a cure temperature of 20 °C to 90 °C for a reaction time of 20 to 40 minutes to form a cured polyurethane having a glass transition temperature of at least 70 °C. Embodiments of the present disclosure further include a composite structure that includes the polyurethane composition and a reinforcement material, where the composite structure can be a blade for a wind generator.