作　　者： ; ; ;

机构地区： 吉林大学珠海学院

出　　处： 《塑料》 2009年第5期8-10,16,共4页

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

领　　域： [化学工程]