气体辅助注射成型气体薄壁穿透的数值模拟研究  

Numerical Simulation Study on Gas Penetration into Thin Sections of Parts in Gas-Assisted Injection Molding

作　　者：张效迅[1] 周国发[1] 蔡奎[1] 胡晨章[1] 钟序光[1] 孙懋[1] 

机构地区：[1]南昌大学环境科学与工程学院,江西南昌330029

出　　处：《中国塑料》2004年第5期93-99,共7页China Plastics

基　　金：国家自然科学基金资助项目 (2 0 2 740 16)

摘　　要：气体辅助注射成型中 ,气体的薄壁穿透是影响注塑件强度和性能的重要因素。运用有限元法及CAE技术 ,就聚合物流变性能及工艺参数对气体薄壁穿透的影响进行了数值模拟 ,探索了流变性能、注射工艺参数与气体薄壁穿透的规律性关系 ,用流变学理论分析了其影响机理 ,并揭示了气体薄壁穿透的形成原因。本研究的数值模拟结果与T .J .Wang等[1] 和D .M .GAO等[2 ] 的实验结论相符合。In the gas-assisted injection molding,thin-wall-penetration constitutes a key factor affecting the performance and quality of the part.A numerical simulation was carried out for the thin-wall-penetration using finite-element method and CAE technique.The relationship among the molding conditions,the rheological behavior of the melt,and the thin-wall-penetration was explored in order to find the origin of the thin-wall-penetration.The simulation results of this paper were in good agreement with the experimental conclusions made by T.J.Wang and D.M.Gao.

关 键 词：气体辅助注射成型 气体薄壁穿透 数值模拟 流变性能 工艺参数 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]