LLDPE/LDPE共混物的结构与性能  

Structure and properties of linear low density polyethylene/low density polyethylene blend

作　　者：李瑞[1] 

机构地区：[1]中国石油天然气股份有限公司大庆化工研究中心,黑龙江省大庆市163714

出　　处：《合成树脂及塑料》2016年第3期52-55,共4页China Synthetic Resin and Plastics

摘　　要：以线型低密度聚乙烯(LLDPE)与低密度聚乙烯(LDPE)为原料,按m(LLDPE)∶m(LDPE)=75∶25共混,经挤出机熔融吹膜制备了LLDPE/LDPE薄膜。采用差示扫描量热仪、凝胶渗透色谱仪、电子万能试验机、雾度仪和旋转流变仪等研究了LLDPE,LDPE,LLDPE/LDPE共混物的结晶行为、流变行为、热性能以及所制薄膜的力学性能、光学性能等,并简要分析了其各项性能得到改善的原因。结果发现:LLDPE/LDPE薄膜具有较好的综合力学性能、光学性能、加工性能。Low density polyethylene（LDPE）and linear low density polyethylene（LLDPE）are blended with the mass ratio of 25：75 to prepare LLDPE/LDPE blend film through melt blowing by extruder. The crystallization,rheological and thermal behaviors of LLDPE,LDPE AND LLDPE/LDPE are observed by differential scanning calorimetry,electric universal testing machine,gel permeation chromatography,haze meter and rotary rheometer as well as the mechanical and optical properties of the film. This paper describes the reasons of improvement for these performances as well. The results show that the blend film has good performance in mechanical,optical properties and processing.

关 键 词：线型低密度聚乙烯 低密度聚乙烯 共混物 力学性能 加工性能 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]