气辅成型工艺参数交互作用对气指缺陷的影响  

Research on Effects of Gas-Assisted in Jection Molding Processing Parameters Interaction on Parts Gas Fingering Defect

作　　者：梁继才[1] 何忠宝[1] 苏梅[1] 柳承德[1] 陈晋市[2] 祁伟[1] 

机构地区：[1]吉林大学材料科学与工程学院,吉林长春130025 [2]吉林大学机械科学与工程学院,吉林长春130025

出　　处：《高分子材料科学与工程》2007年第3期178-181,共4页Polymer Materials Science & Engineering

基　　金："十五"国家科技攻关项目(2004BA907A19-2)

摘　　要：采用正交实验方法和数值模拟方法对气辅成型制品“气指”缺陷进行了研究。研究了熔体温度与气体注射延迟时间、熔体温度与气体注射压力及气体注射延迟时间与气体注射压力三对工艺参数的交互作用对气辅成型制品“气指”缺陷的影响关系。结果表明:熔体温度与气体注射延迟时间的交互作用对“气指”影响较为严重,其它两对工艺参数对“气指”的影响较小。较长的延迟时间可以减轻气指的程度,但延时过长会造成气体无法穿透或穿透不足等问题,因此选择合适的熔体温度和气体延时组合尤为重要。“Gas fingering”defect in gas-assisted injection molding parts was investigated with the methods of orthogonal experiment and numerical simulation. The influenced connections of three different processing parameters interaction were studied, such as melt temperature and gas delay time, melt temperature and gas injection pressure, gas delay time and gas injection pressure. The results show that： compared to others, melt temperature and gas delay time interaction is more serious to gas fingering influence. Long delay time can reduce the degree of gas fingering, but too much delay time may give rise to no gas penetration or an absence of gas penetration. Consequently, it is very important to choose an appropriate couple of melt temperature and delay time.

关 键 词：气辅成型 气指 数值模拟 正交实验法 交互作用 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]