聚乙烯管材耐慢速裂纹增长性能研究进展  

Research Progress on the Slow Crack Growth Resistance of PE Pipes

作　　者：高宁 谢泽祥 申开智[2] 雷军[2] 高雪芹[2] Gao Ning;Xie Zexiang;Shen Kaizhi;Lei Jun;Gao Xueqin(Chengdu Technological University,Chengdu, Sichuan,611730;College of Polymer Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065)

机构地区：[1]成都工业学院,四川成都611730 [2]四川大学高分子科学与工程学院,四川成都610065

出　　处：《现代塑料加工应用》2020年第2期55-58,共4页Modern Plastics Processing and Applications

基　　金：四川省重点研发项目(2018G20332)。

摘　　要：简要介绍了聚乙烯管材发生慢速裂纹增长(SCG)的机理,并详细介绍了影响聚乙烯管材耐SCG性能的影响因素,包括系带分子(TMs)、界面相和无定形相的活动性,以及聚乙烯管材专用料的研发和熔融加工过程中的结构与形态控制研究。The mechanism of slow crack growth of PE pipes from the aspect of molecular structure and fracture mechanics is introduced.Then,the influence factor of SCG of PE pipes is reviewed,including tie molecules,interlamella phase and the mobility of amorphous phase.At last,the study on special PE pipe resins and the morphology control during the melt processing of PE pipes is summarized.

关 键 词：慢速裂纹增长 系带分子 管材专用料 形态控制 

分 类 号：TQ3[化学工程]