塑料科技2025，Vol.53Issue(6)：132-138,7.DOI:10.15925/j.cnki.issn1005-3360.2025.06.023
不同注射方法下大尺寸聚碳酸酯平板的翘曲与应力分析
Warpage and Residual Stress Analysis of Large Polycarbonate Plate by Different Injection Molding Methods
王韬 1颜悦 1郎建林 1葛勇 1许雪婷 2王博伦 1孙琦伟1
作者信息
- 1. 北京航空材料研究院股份有限公司,北京 100095||北京市先进运载系统结构透明件工程技术研究中心,北京 100095
- 2. 北京市先进运载系统结构透明件工程技术研究中心,北京 100095||中国航发北京航空材料研究院,北京 100095
- 折叠
摘要
Abstract
In response to the requirements of high precision and high optical quality for transparent components,a 4 mm thick large-sized polycarbonate plate was selected to conduct analyses on warpage,thickness,and residual stress under different forming methods.For conventional injection molding(CIM),parameters such as melt temperature,mold temperature,holding pressure,and holding time were examined.For injection compression molding(ICM),parameters including melt temperature,mold temperature,compression stroke,and compression speed were investigated.The results indicate that the holding parameters of CIM significantly affect the thickness and its uniformity,warpage deformation,and residual stress of the plate.In contrast,the mold temperature and compression parameters of ICM have a greater impact on thickness and warpage.Comparisons reveal that ICM can not only control the shrinkage and dimensional uniformity of the plate in the thickness direction but also reduce the thickness deviation from approximately 0.25 mm in CIM to 0.05 mm,achieving an 80％reduction.The maximum warpage deformation also decreased from 0.62 mm in CIM to 0.51 mm,with an improvement of 18％.Moreover,ICM can significantly lower the residual stress of the product,thereby reducing the risk of cracking during subsequent assembly and use.It is an effective method for manufacturing low-stress,high-precision,and low-distortion optical products.关键词
常规注射成型/注射压缩成型/厚度/翘曲变形/残余应力Key words
Conventional injection molding/Injection compression molding/Thickness/Warpage/Residual stress分类
化学化工引用本文复制引用
王韬,颜悦,郎建林,葛勇,许雪婷,王博伦,孙琦伟..不同注射方法下大尺寸聚碳酸酯平板的翘曲与应力分析[J].塑料科技,2025,53(6):132-138,7.
