摘要
从对挤出成型有重要影响的螺杆和螺槽结构形式着手,通过改变螺杆和料筒的螺槽断面形状,使用Polyfl ow软件对聚乙烯熔体等温状态时在螺杆与料筒不同断面组合形状下的挤出过程进行数值模拟。通过对比分析压力分布和剪切速率的变化,综合考虑对剪切速率和生产效率的影响,得出螺杆和料筒螺槽断面形状均为梯形形状时可以得到较好的剪切效果。
The structure of screws and channels had great effects on the extruding performance. By changing the section shapes of screw and channels,the extruding process of PE melt in isothermal flow fields was simulated with Polyflow software. By comparing the variation of pressure fields and shearing rate fields with each other,it was concluded that trapezoid screw and channel could lead to good shearing effect.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2014年第10期72-75,共4页
Engineering Plastics Application
基金
国家青年科学基金项目(51303123)
太原理工大学青年基金项目(2012L065)
关键词
单螺杆
螺槽形状
数值模拟
剪切速率
single screw
channel structure
numerical simulation
shearing rate
