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一、引言热塑性聚氨酯弹性体是一种热塑性橡胶,在整个使用温度范围内呈现硫化橡皮的特性,然而它又可以用热塑性塑料的加工方法如模压、挤出、注塑、吹塑等方法进行加工,即它兼备了橡胶和塑料的优点。它的出现引起了橡胶界和塑料界的广泛兴趣,一方面它鼓励人们去研究热塑性聚氨酯弹性体的理论和实践,另一方面又鼓励人们去开发热塑性橡胶的新品种。近20年来人们在这方面已取得了丰硕的
I. INTRODUCTION Thermoplastic polyurethane elastomer is a kind of thermoplastic rubber which shows the properties of vulcanized rubber over the whole service temperature range. However, it can be processed by the processing methods of thermoplastics such as molding, extrusion, injection molding and blow molding, That is, it combines the advantages of rubber and plastic. Its emergence has aroused widespread interest in the rubber and plastics industries. On the one hand, it encourages people to study the theory and practice of thermoplastic polyurethane elastomers, and on the other it encourages people to develop new varieties of thermoplastic rubber. In the past 20 years people have made great achievements in this aspect