一、前言聚氨酯是人们熟悉的一种材料,应用较为广泛;但作为密封元件,在汽车上应用得还少。我们在1976年开始试验,选择了天津塑料化工二厂试产的热塑性聚醚型聚氨酯,在材料性能及应用方面进行了一些试验研究工作,现已在生产上应用。热塑性聚醚型聚氨酯是聚醚的预聚体与二元异氰酸酯缩合得到的高分子聚合物,是线型分子结构的单一组分的材料。它具有很高的强度、良好的弹性、以及很好的耐磨性。这些优 First, the introduction of polyurethane is a familiar material, the application is more extensive; but as a sealing element, the application in the car with less. We started the experiment in 1976 and selected the trial production of thermoplastic polyether polyurethane from Tianjin Plastic Chemical Plant No. 2, and carried out some experimental studies on material properties and applications. Now we have applied it in production. Thermoplastic polyether polyurethane is polyether prepolymer and binary isocyanate condensation polymer obtained, is a linear molecular structure of the single component of the material. It has high strength, good elasticity, and good wear resistance. These excellent