化工学报Issue(10)：4268-4274,7.DOI:10.11949/j.issn.0438-1157.20150292
注射压缩成型聚碳酸酯制品的低温拉伸力学性能
Tensile properties of ICM polycarbonate part under low temperature
摘要
Abstract
Tensile properties of conventional injection molding (IM) PC (polycarbonate) and injection-compression molding (ICM) parts in room and low temperature were compared. The effect of five process parameters (melt and mold temperature, compression distance, delay time and compression force) on residual stress and tensile properties of ICM parts under low temperature was investigated systematically. The results showed that higher tensile yield stress and Modulus were found for ICM parts compared with IM part. Tensile properties of ICM or IM parts were improved under low temperature. Secondary transition were discovered around−40℃ for PC. As the most influenced morphology, the residual stress of ICM parts has the opposite variation as the function of process parameters. Higher melt and molding temperature, bigger compression distance, shorter delay time and smaller compression force can be helpful to give lower residual stress value, and thus to improve the tensile properties.关键词
聚合物/聚碳酸酯/注射压缩成型/黏度/残余应力/机械性能Key words
polymers/polycarbonate/injection-compression molding/viscosity/residual stress/mechanical properties分类
化学化工引用本文复制引用
蒋晶,王小峰,侯建华,李倩,徐轶洋..注射压缩成型聚碳酸酯制品的低温拉伸力学性能[J].化工学报,2015,(10):4268-4274,7.基金项目
supported by the National Natural Science Foundation of China (11372286) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (20124101110007) （11372286）
