PE100管材专用聚乙烯树脂的分子结构  

Molecular Structure of PE100 Polyethylene Pipe Resins

作　　者：王华[1] 牛娜[1] 王立娟[1] 王文燕[1] 王玉如 Wang Hua;Niu Na;Wang Lijuan;Wang Wenyan;Wang Yuru(Daqing Chemical Research Center of Petrochemical Research Institute,CNPC, Daqing,Heilongjiang,163714)

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,黑龙江大庆163714

出　　处：《现代塑料加工应用》2020年第4期40-43,共4页Modern Plastics Processing and Applications

摘　　要：通过基础性能测试、相对分子质量分布测试、力学性能测试、连续自成核退火分级测试和旋转流变测试,对3种PE100级管材专用树脂的分子结构进行了研究。结果表明:利用双釜串联淤浆工艺生产的PE100级树脂其低相对分子质量组分较多,相对分子质量较小,共聚单体含量高,短支链多,性能相对较差;利用多釜串联淤浆工艺生产的PE100级树脂与利用环管淤浆工艺生产的PE100级树脂性能较为优异,相对分子质量及其分布、支化程度以及片晶的厚度都较为合理。The molecular structure of three special resins for PE100 pipe was studied by means of basic property test,molecular weight distribution,mechanical property,successive self-nucleation and annealing fractionation and rotary rheological test.The results show that the resin prepared by double kettle series slurry process has many low molecular weight components,and its molecular weight is low.In addition,it has high content of copolymer monomer and short branch chains,so the performance is not good.The resin produced by multi-kettle series slurry process and the resin produced by ring slurry process have excellent performance,and their molecular weight,molecular weight distribution,branching degree and wafer thickness are reasonable.

关 键 词：聚乙烯 分子结构 相对分子质量分布 力学性能 管材 

分 类 号：TQ3[化学工程]