轮胎胎面胶料共挤出过程的数值模拟  

Numerical Simulation of Tread Rubber Coextrusion Process

作　　者：梁晨[1] 刘高君[1] 姜波[1] 王国林[1] 李国瑞[2] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]风神轮胎股份有限公司,河南焦作454000

出　　处：《高分子材料科学与工程》2014年第1期100-103,共4页Polymer Materials Science & Engineering

基　　金：江苏省自然基金资助项目项目(BK2011405);江苏省高校自然科学研究面上项目(12KJB430006);江苏省普通高校研究生科研创新计划项目(CXZZ12_0666)

摘　　要：以某复合胎面胶料(TWR/FB)的共挤出过程为研究对象,利用Polyflow软件,采用Phan-Thien and Tanner(PTT)本构模型和Navier滑移模型对2种胶料熔体在口模内外的流动进行了三维数值模拟,并将模拟得到的挤出断面和试验挤出断面进行了对比分析。同时分析了牵引速度和预口型板的收敛角对共挤出的影响,结果表明,牵引速度对胶料离开口模后的形状和面积胀大比的影响显著,但对胶料在口模内部的流动状态影响不大;适当地增加预口型板收敛角可以增强胶料在口模内的流动性,提高挤出制品的质量。Taking the coextrusion process of tread rubber （TWR/FB） as study object, the three-dimensional flow of the viscoelastic melt at the exit for the coextrusion process of tread rubber was simulated by Phan-Thien and Tanner（PTT） constitutive equation and Navier slip equation, the simulated and actual cross section were compared. The effect of drawing velocity and convergence angle.on coextrusion process was simulated. The result show that the drawing velocity obviously affects the shape and swell ratio of tread rubber after leaving the die, but has little effect on the flow condition in the die. Improving the convergence angle of the pre-die plate can enhance the rubber flow condition in the die, then it is necessary to design an appropriate convergence angle to get high quality products.

关 键 词：共挤出成型 挤出胀大 牵引速度 收敛角 PTT本构模型 三维数值模拟 

分 类 号：TQ320.663[化学工程—合成树脂塑料工业]