摘要
应用综合分析方法研究了聚碳酸酯(PC)薄壁件分层开裂及其起因,发现了分层的化学应力开裂机制。结构改性聚碳酸酯由于其熔体黏度大,在注塑薄壁产品时,分子链易取向,导致材料分层,并残留大量的内应力;同时PC耐化学性能较弱,在化学试剂和内应力的共同作用下最后发生了开裂。
Delamination and cause of polycarbonate （PC） thin-wall component were studied by comprehensive analysis methods and chemical stress cracking mechanism of PC delamination was found. The macromolecular chains of structural modified PC plastic were prone to orientation during injection molding due to high viscosity, which leads to delamination and a large amount of residual internal stress; meanwhile, cracking happened at the presence of chemical reagent and residual internal stress due to the low chemical resistance of PC.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2008年第11期115-118,共4页
Polymer Materials Science & Engineering
基金
上海市重点学科建设项目资助(B113)
关键词
聚碳酸酯
薄壁
分层
化学应力开裂
polycarbonate（PC）
thin wall
delamination
chemical stress cracking
