双组份共挤出成型机头设计及数值模拟  

Die Design for Bicomponent Coextrusion and Numerical Simulation

作　　者：吴晓芳[1] 刘长维[1] 丁向前[1] 刘元明[1] 

机构地区：[1]北京化工大学材料科学与工程学院,57信箱北京100029

出　　处：《塑料》2006年第2期57-62,共6页Plastics

摘　　要：介绍了双组份共挤出机的特点和优越性,建立了两种熔体三维等温共挤出的物理模型,利用Polyflow软件包对其进行数值求解,给出了不同机头对应的速度流场分布,对机头进行优化设计,并对数值模拟的研究结果进行分析讨论。数值结果对双组份共挤出机机头的设计有一定的指导意义。The characteristics and advantages of bicomponent coextrusion were reviewed. Physical model of three-dimensional isothermal bicomponent coextrusion was established. Polyflow package was used to numerical analysis and the different velocity fields based on different dies were presented. The die was optimally designed and the results of numerical simulation were discussed. The results of numerical simulation are significant for designing dies of bicomponent coextrusion.

关 键 词：复合挤出 数值模拟 口模 POLYFLOW 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]