工艺条件对气体辅助注射成型的影响  

Research on Effect of Technological Conditions on Gas-Assisted Injection Molding Process

作　　者：柳和生[1] 魏常武[2] 周国发[2] 

机构地区：[1]上饶师范学院,江西上饶334001 [2]南昌大学聚合物加工研究室,江西南昌330029

出　　处：《现代塑料加工应用》2008年第3期46-49,共4页Modern Plastics Processing and Applications

基　　金：江西省跨世纪学术和技术带头人培养计划;2006江西省教育厅科技项目[赣教技字(2006)275号]

摘　　要：基于Hele-Shaw模型,采用CAE技术,利用Moldflow软件对气体辅助注射成型过程中熔体注射温度、熔体预填充量、气体注射压力、延迟时间等重要工艺参数与气体穿透深度、熔体厚度和体积填充时间等重要指标的关系进行了数值模拟。结果表明,熔体注射温度和气体注射压力越高、延迟时间越短,则气体穿透深度越小、熔体厚度越薄、体积填充时间越短;熔体预注射量越大,则气体穿透深度越小、熔体厚度越厚、体积填充时间越短。On the basis of Hele-Shaw model, the effects of such technological conditions as melt injection temperature, melt pre-injection amount, gas injection pressure and delay time on such target parameters as gas penetration depth, melt wall thickness and full-filling time were studied numerically by means of CAE technology and the Moldflow software package. The results show that higher melt injection temperature, higher gas injection pressure or shorter delay time can bring out smaller gas penetration depth, smaller melt wall thickness and short full-filling time. Larger melt pre-injection amount can result in smaller gas penetration depth, larger melt wall thickness and shorter full-filling time.

关 键 词：气体辅助注射成型 数值模拟 工艺参数 软件 聚丙烯 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业] O223[理学—运筹学与控制论]