1-己烯共聚与1-丁烯共聚LLDPE的性能对比  

The contrast between properties of 1-hexene and 1-butene LLDPE

作　　者：王彦荣[1] 景政红[1] 

机构地区：[1]中国石油化工股份有限公司北京燕山分公司树脂应用研究所,北京102500

出　　处：《合成树脂及塑料》2010年第1期71-74,共4页China Synthetic Resin and Plastics

摘　　要：通过对1-己烯共聚线型低密度聚乙烯(LLDPE)与1-丁烯共聚LLDPE的分析对比,研究了1-己烯共聚与1-丁烯共聚LLDPE的性能差别。结果表明:在密度和熔体流动速率接近的情况下,1-己烯共聚LLDPE的共聚单体摩尔分数低于1-丁烯共聚LLDPE;1-己烯共聚LLDPE的片晶厚度大于1-丁烯共聚LLDPE,且片晶尺寸分布更窄;在快速形变速率情况下,1-己烯共聚LLDPE与1-丁烯共聚LLDPE树脂的拉伸性能差别更为明显;1-己烯共聚LLDPE流延膜的拉伸屈服应力、拉伸断裂应力、撕裂强度、落镖冲击强度及光学性能均高于1-丁烯共聚LLDPE。The properties of 1-hexene and 1-butene linear low density polyethylene（LLDPE） were investigated through comparative analysis. The results indicate that the molar fraction of the comonomer 1-hexene of 1-hexane LLDPE is lower than that of 1-butene of its counterpart with similar density and melt flow rate. Compared to 1-butene LLDPE, 1-hexene LLDPE has thicker lamella and narrower lamella thickness distribution. The tensile properties of the two copolymers differ significantly, especially at high deformation rates. Tensile stress at yield and break, Elmendorf tear strength, Spencer impact strength and optical property of 1-hexene LLDPE cast film are superior to those of 1-butene copolymer film, respectively.

关 键 词：线型低密度聚乙烯 1-己烯共聚合 1-丁烯共聚合 系带分子 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]