长期低价供应TPEE 3078杜邦原料:TPEE has outstanding high and lowtemperature performance and good heat resistance. It is basicallyweightless when heated continuously at 110 ~ 140 ℃ for 10 hours;Good low temperature flexibility and high low temperature impactstrength. Under the condition of low strain, the elastic modulus ofTPEE is higher than that of other thermoplastic elastomers with thesame hardness and has excellent fatigue resistance; The compressivemodulus and tensile modulus of elasticity are much higher than TPU.Above room temperature, TPEE has a high flexural modulus ofelasticity, but it is not as hard as TPU at low temperature; Acidand alkali resistance is better than TPV (TPO); In terms ofelasticity, the elasticity of TPEE is about 20% higher than that ofTPU. The biggest problem of TPEE is insufficient softness, poor hotwater resistance and high price.
TPEE3078杜邦--概述:热塑性聚酯弹性体TPEE作为热塑性工程塑料较新的成员,完美的结合了橡胶的弹性,工程塑料的强度及热塑料的加工特性。区别于传统弹性体TPE,聚酯弹性体TPEE拥有三大特点:(1)突出的物理、化学性能:拥有惊人的回弹力,出众的韧性及强度。对蠕变、冲击和挠曲疲劳具极高抗力。在埃佐( Izod )缺口冲击强度试验中(ASTM 标准D256) , - 40 ℃以及23 ℃的情况下保持不破;低温下3万次的弯折试验不断;塑料中拥有类似弹簧的特性。同时,聚酯弹性体可抵抗非极性溶剂(油、燃油、液压油) ,室温下的极性溶剂(乙二醇、高分子量乙醇、弱酸和弱碱) 。
TPEE3078杜邦--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。
TPEE3078杜邦--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GeneralElectric(Valox)、荷兰AkzoChem.(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