气体辅助注射成型高密度聚乙烯的结晶形态  

Crystalline Morphology of HDPE Molded by Gas Assisted Injection

作　　者：黄莉[1] 郑国强[1] 杨伟[1] 杨斌[1] 杨鸣波[1] 李倩[2] 申长雨[2] 

机构地区：[1]四川大学高分子科学与工程学院高分子工程国家重点实验室,四川成都610065 [2]郑州大学橡塑模具国家工程研究中心,河南郑州450002

出　　处：《高分子材料科学与工程》2007年第5期198-201,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金重大项目(10590351);国家重点基础研究项目(2005CB623808)

摘　　要：通过扫描电镜(SEM)观察了气体辅助注射成型(GAIM)和常规注射成型(CIM)高密度聚乙烯(HDPE)的结晶形态,发现CIM试样为区分不明显的皮芯结构,而GAIM试样形成了包括球晶、串晶和取向片晶的多层结构。且GAIM试样球晶尺寸显著小于CIM制品。在结晶形态分析的基础上,初步探讨了气体辅助注射成型制品结晶形态的形成机理。Scanning electronic microscopy was adopted to explore the crystalline morphology of HDPE molded by gas assisted injection and conventional injection. The results show that a multilayer structure was formed in the GAIM parts with several kinds of crystalline structure, including spherulite, shish-kebab, and oriented parallel lamellar stacks, which was not observed in CIM. Moreover, the spherulite sizes of GAIM parts are obviously small than CIM ones.

关 键 词：气辅注射 串晶 气体穿透 刻蚀 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]