宽分布聚乙烯管材树脂结构与性能差异性  

Differences in the Structures and Properties of Wide-Distribution Polyethylene Pipe Resins

作　　者：郎学彬 武志鹏 唐文睿 马雄 韩向艳 王长全 钱建华[1] 胡跃鑫 LANG Xuebin;WU Zhipeng;TANG Wenrui;MA Xiong;HAN Xiangyan;WANG Changquan;QIAN Jianhua;HU Yuexin(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China;Olefin Plant of Fushun Petrochemical Co.,Ltd.,Fushun 113004,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]抚顺石化公司烯烃厂,辽宁抚顺113004

出　　处：《塑料工业》2024年第5期124-128,168,共6页China Plastics Industry

摘　　要：本文采用高温凝胶渗透色谱(GPC)、差示扫描量热仪(DSC)、万能拉伸试验机、冲击试验机和动态力学分析仪(DMA)等研究了Hostalen(两釜串联)和Hostalen ACP(三釜串联)淤浆聚合工艺制备的宽分布聚乙烯管材树脂GC1和GC2结构与性能的差异性。结果表明,三釜串联生产的GC2平均分子量更大,分子量分布更宽,高分子量级分(重均分子量M_(W)>10^(6))相对含量更高且共聚单体的含量更高。同时,GC2还具有更高的拉伸强度和冲击强度,耐蠕变性能更优异,高剪切速率下具有更好的加工流动性。The differences in the structures and properties of the wide-distribution polyethylene pipe resins(GC1 and GC2)produced by Hostalen(double-reactor tandem)and Hostalen ACP(three-reactor tandem)slurry polymerization process were investigated by high temperature gel permeation chromatograph(GPC),differential scanning calorimeter(DSC),universal tensile testing machine,impact testing machine,and dynamic mechanical analyzer(DMA).The results show that GC2 produced by the three-reactor tandem has a larger average molecular weight,a wider molecular weight distribution,a higher relative content in the high molecular weight fraction(M_(W)>10^(6)),and a higher comonomer content.Besides,the impact strength and tensile strength of GC2 are higher.GC2 has stronger creep resistance and better processing fluidity at the high shear rate.

关 键 词：聚乙烯管材树脂 淤浆聚合工艺 力学性能 

分 类 号：TQ325[化学工程—合成树脂塑料工业]