短玻纤聚丙烯水辅注塑中注水压力控制方式的数值模拟  

Numerical Simulation of Water Injection Pressure Control Method in Short- Glass-Fiber-Reinforced Polypropylene Water-Assisted Injection Molding

作　　者：上官元硕 柳和生[2,3] 黄益宾[1] 余忠[1,3] 章凯[1] SHANGGUAN Yuanshuo;LIU Hesheng;HUANG Yibin;YU Zhong;ZHANG Kai(Jiangxi Province Key Laboratory of Polymer Preparation and Processing, Shangrao Normal University, Shangrao 334001, China;School of Chemical Biology and Materials, East China University of Science and Technology, Nanchang 330013, China;Polymer Processing Research Laboratory, Nanchang University, Nanchang 330031, China)

机构地区：[1]上饶师范学院江西省塑料制备成型重点实验室,江西上饶334001 [2]东华理工大学化学生物与材料学院,南昌330013 [3]南昌大学聚合物成型研究室,南昌330031

出　　处：《中国塑料》2019年第3期62-67,共6页China Plastics

基　　金：国家自然基金(21664002;51563010);江西省教育厅科技项目(GJJ161049);江西省教育厅科技落地计划项目(KJLD18073);2018年上饶师范学院校级课题(201807)

摘　　要：基于广义非牛顿本构方程,采用有限体积法对不同注水压力控制方式下短玻纤聚丙烯水辅注射成型进行数值模拟。研究表明,注水压力控制方式的改变,会对水辅注塑制件的残余壁厚、偏心率产生一定的影响;使用折线式的控制方式,不同分组之间残余壁厚大小相近,偏心率均较大,同一分组下残余壁厚的变化较小;使用阶跃式的控制方式,不同分组下残余壁厚大小都不相近,且偏心率较小,同一分组下残余壁厚的变化较大。Based on the generalized non-Newton constitutive equation, a finite volume method was used to simulate the water-assisted injection molding of short-glass-fiber-reinforced polypropylene (PP) under the different water injection pressure control modes. The simulation results indicated that the change of water injection pressure control mode had a certain influence on the residual wall thickness and eccentricity rate of the water-assisted injection molded parts. The residual wall thickness between different groups was similar and the eccentricity rate was larger when using the polyline control mode. The residual wall thickness also became more uniform in the same group. Using the stepwise control method, the residual wall thickness was not similar under different groups, and the eccentricity rate was small. The residual wall thickness also changed significantly under the same group.

关 键 词：水辅注塑 控制方式 注水压力 短玻纤聚丙烯 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]