FM全新卡车顶篷把手气辅成型技术  

Gas Assisted Injection Molding of FM Truck Roof Handle

作　　者：梁策[1] 李义[1] 柳承德[1] 贾鲢莉[1] 

机构地区：[1]吉林大学材料科学与工程学院,吉林长春130025

出　　处：《高分子材料科学与工程》2008年第8期139-142,146,共5页Polymer Materials Science & Engineering

基　　金："十五"国家科技攻关项目(2004BA907A19-2)

摘　　要：研究了气辅成型过程中气体穿透聚合物熔体的扩散特征和气-熔界面形态。以FM全新卡车顶篷把手为典型件进行气辅成型实验研究,研究了气体保压压力、熔体温度、气体保压时间、气体注射延迟时间四个重要工艺参数对气熔界面的影响规律。结果表明,在气体注射点近区,气体对聚合物熔体冲击程度较大,呈现出复杂流动形态及扩散特征;低的保压压力和熔体温度,较短的保压时间和较长的气体注射延迟时间可获得较好的气熔界面。The diffusion of gas penetration in polymer melt during gas-assisted injection molding and gas-melt interface were studied. To FM truck roof handle, gas holding pressure, melt temperature, gas holding time and delay time are main processing parameters that influence gas-melt interface. The influence of these parameters on gas-melt interface was obtained by experimental study. The results indicate that the degree that gas lashes polymer melt is severe, and complex flow pattern and diffused feature is founded near the point of gas injection; high quality of gas-melt interface is obtained by reducing gas holding pressure, enhancing melt temperature, decreasing gas holding time and increasing delay time.

关 键 词：气辅成型 气体穿透 气熔界面 工艺参数 卡车把手件 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]