10吨塑料桶

 10吨塑料桶在结构上，LLDPE只在短支链数目上与HDPE不同。HDPE的短支链数目较少，因此，是有更高密度的材料。LLDPE的物理特性受控于它的分子量，MWD和密度。LLDPE优于LDPE，归根结底取决其用途。通常，在所有应用中用LLDPE生产刚性更强的产品，虽然根据ATSM对低密度材料标准，LLDPE和LDPE的密度都在0．91—0．925之间。LLDPE形成更高结晶结构，因为不存在长支链。LLDPE较大的结晶性产生较高刚性的产品。这种较高的结晶度也使LLDPE与LDPE相比，熔点提高了 10~15℃。更高的抗伸强度、抗穿透性、抗撕裂性和伸长率增加是LLDPE的特性，使其特别适用于制薄膜。如果用己烯或辛烯代替丁烯作共聚单体甚至连抗冲击力和抗撕裂性也可得到较大的改进。对于相同熔体指数和密度下的给定树脂，己烯和辛烯LLDPE树脂在冲击和撕裂性能上提高到 300%。己烯和辛烯树脂更长的侧链在链之间起到象“绳结”分子一样的作用，改进了化合物的韧性。
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