温度和剪切力对U—PVC干混料塑化过程的影响  

The Influence of Temperature and Shear Stress in the Fusion Process of U-PVC Dry Blends

作　　者：栾照辉[1] 王暄[1] 

机构地区：[1]哈尔滨理工大学应用科学学院,黑龙江哈尔滨150080

出　　处：《哈尔滨理工大学学报》2007年第2期134-137,共4页Journal of Harbin University of Science and Technology

摘　　要：利用转矩流变仪及适当的实验方法对U—PVC干粉料在不同热—机械作用下的塑化行为进行研究,同时讨论了通过分析转矩流变曲线来表征U—PVC熔体流动性和塑化程度的方法．结果表明,提高剪切力和温度有助于促进U—PVC熔体的流动和塑化．With the use of a torque rheometer and proper procedures, the fusion behavior of U - PVC dry blends during the various themo - mechanical process is studied in this paper. A method, which is based on analyzing the torque rheological curve to characterize the property of flow and degree of gelation of the U - PVC melt, is also discussed. It is shown that the increase in temperature and shear stress favor raising the flow and plastic melting of U - PVC compounds.

关 键 词：U-PVC 转矩流变曲线 剪切力 温度 

分 类 号：TQ325.21[化学工程—合成树脂塑料工业]