聚苯乙烯/超临界CO_2微孔注塑充模过程的可视化研究  

Visualization Study on the Filling Process of PS/Sc-CO_2 During Microcellular Injection Molding

作　　者：王建康[1,2] 黄汉雄[2] 刘向阳[1] 

机构地区：[1]吉林大学珠海学院,广东珠海519041 [2]华南理工大学,广东广州510640

出　　处：《塑料》2009年第5期8-10,16,共4页Plastics

摘　　要：构建微孔注塑模具,在该模具上增加可视化窗口、模腔压力传感器。通过采集聚苯乙烯/超临界二氧化碳(PS/Sc-CO2)微孔注塑充模过程的图像,以及实时压力曲线,并结合微孔注塑制品的扫描电镜图片,对泡孔形态的形成原因进行分析。结果显示:熔体温度、模腔压力是影响泡孔形态形成的重要因素。The microcellular injection molding mold was modified with a visual window and pressure sensor. The filling processes of polystyrene/carbon dioxide was observed and recorded using a digital camera,while the mold cavity pressure was measured by the sensor. The final bubble morphology was observed by scanning electron microscope. The experiment results showed that melt temperature and mold cavity pressure were two most prominent factors influencing bubble morphology.

关 键 词：聚苯乙烯 微孔注塑 超临界流体 可视化 膜腔压力 

分 类 号：TQ328.06[化学工程—合成树脂塑料工业] TQ352.2