工艺参数对气辅共注成型过程影响的实验研究  

Influence of Process Parameters on a Gas Assisted Co-injection Molding

作　　者：周国发[1,2] 钟序光[1,2] 周勇飞[1,2] 郭吉林[1,2] 闫丽[1,2] 

机构地区：[1]南昌大学环境科学与工程学院,江西南昌330029 [2]鄱阳湖湖泊生态环境与生物资源综合利用实验室,江西南昌330047

出　　处：《中国塑料》2006年第11期58-61,共4页China Plastics

基　　金：国家自然科学基金资助项目(20274016)

摘　　要：对先进的气辅共注成型工艺进行了系统的实验研究,研究了熔体注射温度、气体压力这两种工艺参数对气辅共注成型气体和芯层熔体穿透形貌的影响规律,并基于聚合物流变学和流体动力学揭示了这些工艺参数对成型过程的影响机理。结果表明,随着芯层熔体温度升高,芯层熔体的黏度会减小,流动阻力减小,使得气腔的穿透深度减小,而穿透宽度和穿透厚度则增大,但芯层熔体的穿透长度变化不明显；随着注气压力增大,气体的穿透深度、穿透宽度和穿透厚度均增大。An experimental research on the gas-assisted co-injection molding was carried out, and the emphasis was focused on the effect of two key parameters, melt temperature and gas pressure on the melt penetrating pattern and the related mechanism. It was found that with increasing of the temperature of core melt, the viscosity of core melt decreased resulting in reduced gas penetrating depth and increased gas penetrating width and thickness. With increasing of gas pressure, the gas penetrating depth, width and thickness increased.

关 键 词：气辅共注成型 过程参数 影响机理 实验研究 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]