氟弹性体对聚乙烯流变性能的影响  

Effect of fluorocarbon elastomer on rheological properties of PE

作　　者：关鹏[1,2] 王帆 伍剑[2] 李广全 李健[1] 杨世元[2] Guan Peng;Wang Fan;Wu Jian;Li Guangquan;Li Jian;Yang Shiyuan(College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070,China;Lanzhou Petrochemical Research Center,PetroChina,Lanzhou 730060,China;Institute of Chemical and Biological Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]西北师范大学化学化工学院,甘肃省兰州市730070 [2]中国石油天然气股份有限公司兰州化工研究中心,甘肃省兰州市730060 [3]兰州交通大学化学与生物工程学院,甘肃省兰州市730070

出　　处：《合成树脂及塑料》2018年第2期74-77,共4页China Synthetic Resin and Plastics

基　　金：中国石油天然气股份有限公司科技管理部聚烯烃新产品开发重大专项(2013E-3705)

摘　　要：采用毛细管流变仪和熔体拉伸流变仪对添加不同氟弹性体助剂后PE100级基础树脂的毛细管流变行为和拉伸流变行为进行了测试和分析。毛细管流变结果表明:两种氟弹性体对PE100级基础树脂均具有良好的改性效果。在低剪切速率下,添加氟弹性体后试样的黏度小于未添加的,且流动性增加。当剪切速率过高时,两种氟弹性体对产品黏度的改变差异不明显。拉伸流变研究表明:在拉伸速率比较小时,添加氟弹性体后试样的熔体强度大于未添加的,具有良好的加工性能,且国产氟弹性体ZZR30C的改性性能可以达到进口5924的标准。The capillary and elongation rheological behaviors of polyethylene(PE)100 after adding different fluorocarbon elastomers were tested by capillary rheometer and melt extensional rheometer.The test results of capillary rheometer indicate that both fluorocarbon elastomers can be used for PE100 modification.The viscosity of the samples adding fluorocarbon elastomer is lower than that of the original ones at low shear rate,causing high fluidity of the product.The viscosity of products caused by adding fluorocarbon elastomers respectively are close at high shear rate.The results of melt extensional rheometer indicate that the melt strength of the samples adding fluorocarbon elastomer is greater than that of the unmodified at low draw ratio,demonstrating excellent processability.The modifying performances of domestic ZZR30C reach the standards of imported 5924.

关 键 词：聚乙烯 氟弹性体 毛细管流变 拉伸流变 挤出胀大比 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]