PP91500(金发口罩原料)
PP是一种半结晶性材料。它比PE要更坚硬并且有更高的熔点。由于均聚物型的PP温度高于0℃以上时非常脆,因此许多商业的PP材料是加入1~4%乙烯的无规则共聚物或更高比率乙烯含量的钳段式共聚物。共聚物型的PP材料有较低的热扭曲温度(100℃)、更高的透明度、低光泽度、低刚性,但是有有更强的抗冲击强度。PP的冲击强度随着乙烯含量的增加而增大。PP的维卡软化温度为150℃。由于结晶度较高,这种材料的表面刚度和抗划痕特性很好。PP不存在环境应力开裂问题。通常,采用加入玻璃纤维、金属添加剂或热塑橡胶的方法对PP进行改性。
PP 聚丙烯 百折胶 软胶B901T 韩国SK 抗冲击强度 耐热性
PP 聚丙烯 百折胶 软胶H390F 韩国SK 注塑级
PP 聚丙烯 百折胶 软胶HX3800 韩国SK 包装容器-塑料容器-薄壁制品
PP 聚丙烯 百折胶 软胶R362Y 韩国SK 食品级-食品包装
PP 聚丙烯 百折胶 软胶R372Y 韩国SK 高透明 高光泽
PP 聚丙烯 百折胶 软胶H896S 韩国SK 纤维级具有高度的流动性
PP 聚丙烯 百折胶 软胶H235W 韩国SK 薄膜级透明性 防静电性
PP 聚丙烯 百折胶 软胶H229P 韩国SK 薄膜级透明性 防静电性
PP 聚丙烯 百折胶 软胶H150N 韩国SK 高滑爽 开口性 透明度 光泽性
The MFR OF PP is in therange of 1 ~ 40. PP WITH LOW MFR had better impact resistance butlower tensile strength. For the same MFR material, the impactstrength of Copolymer type is higher than homopolymer type. As aresult of crystallization, the shrinkage of PP is quite high,generally 1.8 ~ 2.5% . And the Directional uniformity of shrinkageis much better than that of PE-HD and other materials. Theshrinkage was reduced to 0.7% by adding 30% glass additive.HOMOPOLYMER and copolymer type PP materials have excellent moistureabsorption resistance, anti-acid-base corrosion resistance,anti-solubility. However, it is not resistant to aromatichydrocarbon solvents such as benzene and chlorinated hydrocarbon(tetrachloromethane) solvents. PP does not have the same hightemperature oxidation resistance as PE.