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材料工程  2014 

注射成型工艺参数对聚碳酸酯残余应力的影响

DOI: 10.3969/j.issn.1001-4381.2014.01.005, PP. 24-29

Keywords: 注射成型,聚碳酸酯,残余应力,光程差

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Abstract:

采用正交实验法考察了不同注射成型工艺参数对聚碳酸酯(PC)残余应力的影响,结果表明熔体温度对残余应力影响最大,冷却时间和模具温度次之,注射压力影响最小。熔体温度升高,分子链快速松弛,残余应力减小。同时试样浇口附近处的残余应力较大且分布集中,沿熔体流动方向,残余应力逐渐减小。对于不同成型工艺,残余应力的分布趋势基本相同。

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