注射成型和注射压缩成型角窗的残余应力比较  

Residual Stresses of Injection Molded and Injection Compression Molded Auto Glazing

作　　者：陈宇宏[1] 袁渊[1] 李曦[2] 詹茂盛[2] 

机构地区：[1]北京航空材料研究院,北京100095 [2]北京航空航天大学,北京100191

出　　处：《航空材料学报》2010年第3期48-54,共7页Journal of Aeronautical Materials

基　　金：国家高技术研究发展计划(863)项目(2007AA03Z534)

摘　　要：基于粘性流体力学基本方程和粘度模型,建立了注射成型和注射压缩成型的残余应力计算模型,然后对角窗的注射成型和注射压缩成型进行了计算模拟,结果表明,注射成型角窗的残余应力大,且分布范围宽;注射压缩成型角窗的残余应力相对较小,且分布范围较窄,这种特征与注射压缩成型时熔体流动阻力小、型腔压力和体积温度分布均匀有关。最后采用偏振光法对实际注射成型和注射压缩成型角窗的应力分布进行了测试,进一步验证了注射压缩成型制品的低残余应力特点。Numerical models of residual stresses were established based on a series of governing equations for injection molding and injection compression molding.Then the models were applied in analyzing residual stresses of injection molded and injection compression molded auto glazing.The results show that residual stresses of injection-compression molded glazing are much smaller and evener than those of injection compression molded parts,and this is associated with low flow resistance of polymer melt,uniform distribution of in-mold stress and bulk temperature in the process of injection compression molding.Polycarbonate glazing were molded,and the polarized light test results also verified the numerical simulations.

关 键 词：注射成型 注射压缩成型 残余应力 角窗 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]