论文部分内容阅读
聚氨酯橡胶是一种性能介于橡胶和塑料之间的弹性体高分子材料.它具有一定的弹性,耐冲击强度高,耐油、耐磨、抗老化、抗撕裂性能强。目前国产的聚氨酯橡胶有聚酯和聚醚两种类型,牌号为8295、8290、8280,8270,8260,肖氏硬度为95、90、85、75、63。前二种适用于冲裁,后三种适用于弯曲、成形、拉伸等冲压工艺。聚氨酯橡胶在我国七十年代末应用于冲压工艺,目前仍处于推广使用阶段.我
Polyurethane rubber is a kind of elastic polymer material with performance between rubber and plastic.It has some elasticity, high impact resistance, oil resistance, wear resistance, anti-aging and strong tear resistance. At present, polyurethane made of polyester and polyether two types, grades 8295,8290,8280,8270,8260, Shore hardness of 95,90,85,75,63. The first two for blanking, the latter three for bending, forming, drawing and other stamping process. Urethane rubber used in stamping technology in the late seventies in our country, is still in the promotion and use of stage.