脉动注射对螺线槽模腔熔体流动性能的影响  

INFLUENCE OF PULSATING-PRESSURE-INDUCED INJECTION MOLDING ON RHEOLOGIC PROPERTY OF POLYMER MELT IN SPIRAL CAVITY

作　　者：瞿金平 岑丹涛 冯彦洪 殷小春 董建华 

机构地区：[1]华南理工大学聚合物新型成型装备国家工程中心,聚合物成型加工工程教育部重点实验室,广州510640

出　　处：《工程塑料应用》2008年第4期30-32,33,共4页Engineering Plastics Application

基　　金：国家自然科学基金资助项目(10472034,10590351)

摘　　要：采用阿基米德螺线槽模具对脉动注射充模过程中聚合物熔体的流变行为进行了实验研究,分析了振动力场对聚合物熔体充模流动性及模腔不同位置聚合物熔体充模压力的影响。结果表明,振动力场的引入有利于降低聚合物熔体的表观粘度,改善熔体的流动性,减小熔体在充模过程的压力损失。这种效果尤其对表观粘度高的聚合物熔体更为明显。The Archimedes spiral cavity mould with pressure sensors was injection molded by pulsating-pressure-induced injection molding machine. The influences of vibration force field on the melt flowing length and the meh injection pressure were analyzed. The results showed that vibration force field could reduce the melt apparent viscosity and the injection pressure losing, improve the melt flowing property. Moreover, the influence of vibration force field on the melt with high apparent viscosity was more obvious.

关 键 词：振动力场 阿基米德螺线槽模具 注射成型 模腔压力 低密度聚乙烯 

分 类 号：TQ320.663[化学工程—合成树脂塑料工业] TE934.902[石油与天然气工程—石油机械设备]