Crystallization accelerating agent for crystallization/semi-crystallization polyurethane and preparing method and application thereof

The invention discloses a crystallization accelerating agent for crystallization/semi-crystallization polyurethane and a preparing method and application thereof.In the prior art, control over the crystallization morphology and the crystallization speed of the crystallization/semi-crystallization-type polyurethane does not exist, and the advantage of a crystallization/semi-crystallization polymer can not be most effectively developed.According to the crystallization accelerating agent, polyester diol serves as a structural body, and closed isocyanate serves as a potential reactive functional group.The crystallization accelerating agent is applied to the crystallization/semi-crystallization polyurethane, the crystallization speed can be increased, and the crystallization morphology can be improved; in the use process or the heat existing process, the potential closed isocyanate functional group can be further reacted with polyurethane resin or an active group on a contact base material, and hardness, strength and aging resistance are improved.