材料工程2018，Vol.46Issue(4)：134-139,6.DOI:10.11868/j.issn.1001-4381.2017.000869
二次注射成型工艺参数对PMMA-PC复合平板翘曲的影响
Effect of Overmolding Injection Parameters on Warpage of PMMA-PC Composite Board
孙琦伟 1陈宇宏 1颜悦 1郎建林 1王韬 1葛勇1
作者信息
- 1. 中国航发北京航空材料研究院 透明件研究所, 北京 100095
- 折叠
摘要
Abstract
The influence of overmolding injection parameters such as packing pressure, racking time, melt temperature, mold temperature and the injection speed on the warpage of PMMA-PC composite boards was investigated. The result shows that the warpage of PMMA-PC composite boards exhibits the tendency of decreasing first and then increasing with the increase of packing pressure; However, the prolongation of packing time is beneficial to reduce the warpage of composite boards, increasing melt temperature and injection speed will lead to the increase of the warpage composite boards. When mold temperature increases, the composite boards bend towards the PMMA side. Asymmetrical cooling in the mold resulting in internal residual thermal stress in composite boards is the main reason of the increase of the warpage, when the mold temperature is 90℃, no warpage occurs in the composite boards. Among these parameters studied, mold temperature and packing time influence the most significantly on the warpage of the composite boards.关键词
二次注射成型/翘曲/聚甲基丙烯酸甲酯/聚碳酸酯Key words
overmolding injection/warpage/polymethylmethacrylate/polycarbonate分类
化学化工引用本文复制引用
孙琦伟,陈宇宏,颜悦,郎建林,王韬,葛勇..二次注射成型工艺参数对PMMA-PC复合平板翘曲的影响[J].材料工程,2018,46(4):134-139,6.
