注塑工艺对聚碳酸酯制品环境应力开裂行为的影响  

Effect of Injection Molding Process on Environmental Stress Cracking Behavior of Polycarbonate Parts

作　　者：韩健[1] 韩冬雪[1] 刘春太[1] 陈静波[1] 申长雨[1] 

机构地区：[1]郑州大学橡塑模具国家工程研究中心,河南郑州450002

出　　处：《中国塑料》2010年第4期76-79,共4页China Plastics

基　　金：国家自然科学基金项目资助(10872186)

摘　　要：研究了不同注塑工艺下成型的聚碳酸酯(PC)平板制品的环境应力开裂行为。结果表明,在四氯化碳浸渍下,在制品侧壁位置出现分层开裂;熔体温度升高可以提升PC制品的耐环境应力开裂性;保压压力较大时,制品开裂现象较为明显。在分析分子取向和残余应力与制品开裂行为关系的基础上,探讨了注射成型工艺对PC制品环境应力开裂行为的影响机理。This work investigated the environment stress cracking behavior of polycarbonate （PC） injection molded plates with different processing conditions. When exposed to carbon tetrachloride, cracks appeared at the edge surface of the molded parts. Higher injection temperature increased resistance to the environmental stress cracks, while higher packing pressure made the cracking more serious. Additional study was concentrated on the effect of molecular orientation and residual stresses on crack formation of the parts.

关 键 词：聚碳酸酯 环境应力开裂 分子取向 双折射 残余应力 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]