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.
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