玻纤增强HDPE气体辅助注射成型制品的形态  

Morphology of GF Reinforced HDPE Composite Molded by Gas Assisted Inject Ion Molding

作　　者：汪龙[1] 孙囡[1] 杨斌[1] 冯建民[1] 杨鸣波[1] 

机构地区：[1]四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,四川成都610065

出　　处：《高分子材料科学与工程》2011年第4期106-109,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(50673067)

摘　　要：采用气体辅助注射成型(GAIM)和普通注射成型(CIM)制备了玻纤(GF)增强高密度聚乙烯(HDPE)复合材料。通过扫描电镜对复合材料中的玻纤取向进行了研究,发现CIM试样的玻纤仅在表层有轻微取向,而GAIM试样在整个横截面上玻纤均发生了明显的取向,且在次表层处取向强烈,排列十分规整。在此前研究工作的基础上,进一步探讨了玻纤取向结构的形成机理。Scanning electronic microscopy（SEM） was adopted to explore the morphologies of HDPE/GF composites molded by gas assisted injection molding（GAIM） and conventional injection molding（CIM）,respectively.The results show that the fibers in the CIM parts orientate only in the region near the mold wall,namely,the skin layer.In contrast,the fibers in the GAIM articles orientate notably in the sub-skin layer,and slightly in the region near the mold wall as well as in the gas channel zone.As reported in our previous work,the shear field and cooling rate greatly influence the morphology formation during GAIM and CIM process.Further,combining with the previous research,the mechanisms for fiber orientations in the GAIM part were also discussed.

关 键 词：气辅注射成型 高密度聚乙烯 玻纤 取向 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]