挤出机喂料段动态流场分析  

Analysis of Dynamic Flow Field in Feeding Zone of Extruder

作　　者：吕炜帅[1] 刘红彬[1] 

机构地区：[1]天津赛象科技股份有限公司,天津300384

出　　处：《轮胎工业》2015年第1期50-56,共7页Tire Industry

摘　　要：运用专业粘弹性动态流体模拟软件Polyflow对Φ200单螺杆挤出机螺杆挤出过程中喂料段混炼1s内的瞬态流场进行模拟和分析。结果表明:喂料段采用双层螺旋结构的螺杆,剪切速率分布更广,能够增强螺杆对胶料的作用,提高螺杆的塑化和混炼能力;混炼过程中胶料被反复拉伸并存在返混现象,可获得良好的混合效果。The transient flow field in the feeding zone of Φ200 single screw extruder mixing for 1 s was simulated and analyzed by using professional viscoelastic fluid software Polyflow. The results showed that,by using double helix structure in feeding zone,the distribution of shear rate was a broader, the force of the screw on the compound was enhanced, the performance of plasticizing and mixing was improved. In the mixing process, the compound was stretched repeatedly and backmixed, so that good mixing result was obtained.

关 键 词：挤出机 喂料段 动态流场 动态模拟 

分 类 号：TQ330.64[化学工程—橡胶工业]