TPEE/5556W东丽--Overview: TPEE, as a new member of thermoplastic engineering plastics, perfectly combines the elasticity of rubber, the strength of engineering plastics and the processing characteristics of thermoplastics. Different from traditional elastomer TPE, polyester elastomer TPEE has three characteristics: (1) outstanding physical and chemical properties: Amazing resilience, outstanding toughness and strength. It has high resistance to creep, impact and flexural fatigue. In Izod notch impact strength test (ASTM D256), - 40 ℃ and 23 ℃; 30000 bending tests at low temperature; plastic has the most similar spring characteristics. At the same time, polyester elastomer can resist non-polar solvent (oil, fuel oil, hydraulic oil), polar solvent (glycol, high molecular weight ethanol, weak acid and weak base) at room temperature.
市场：据调查，随着中国的汽车工业高速发展,TPEE塑料在汽车部件中的应用比例越来越大。宽广的适用温度范围和优异的高低温回弹性,使得Hytrel 产品在安全气囊张开门、CVJ 保护罩、进风口导管等组件中起到了重要作用。TPEE尤其适合安全气囊罩盖制造,宽阔温度范围的独特及一致性的物理性能,可用于极端低温的环境下,同时满足汽车内部的UV 要求和美观性。而CVJ保护罩与其橡胶制同类产品相比,结束了在汽车生命周期内,既昂贵又复杂的故障维修工作,具有更高的成本效益,还拥有优异的韧性和耐油脂能力。
应用：大约有35%用于工业橡胶制品，例如胶管、胶带；20%为汽车配件方面；其余为家电使用，如消音齿轮、电话编码器卡等。缺点是硬度大，不易制出柔软的制品，同时耐压缩变形性、耐热水性和耐强酸性都较差。此外，质量的均一性和价格也都是问题，故而多年来一直在对其进行改进。美General Electric(Valox)、荷兰Akzo Chem.(Arnite1)、日本东洋纺(Pelprene)等***的大化工公司都已涉足TPEE 开发并开始实现商业化生产。新改进的TPEE 有，以聚己内酯为软链段的聚酯—醚共聚物，可以提高其耐水解性、耐寒性，进一步改进耐热、耐天候性和机械强度。还有与PA、PC 类共混的聚合物合金、超耐热的TPEE 和耐天候的TPEE 等，主要用于汽车的外板以及外装部件。