中国塑料 ›› 2011, Vol. 25 ›› Issue (08): 94-98 .DOI: 10.19491/j.issn.1001-9278.2011.08.023

• 机械与模具 • 上一篇    下一篇

回流对不相容体系共混物分布混合效果的影响

周炳斌 马秀清 黄凤春 梁文虎   

  1. 北京化工大学
  • 收稿日期:2011-04-13 修回日期:1900-01-01 出版日期:2011-08-26 发布日期:2011-08-26

Effect of Backflow on the Distributive Mixing Performance of Incompatible Polymer Blends

  

  • Received:2011-04-13 Revised:1900-01-01 Online:2011-08-26 Published:2011-08-26

摘要: 对啮合同向双螺杆挤出机熔体输送段6种不同螺杆构型所形成的流场进行了数值模拟,并进行了实验研究。结果表明,增大回流系数能增强共混物的分布混合效果,并且回流系数越大,分布混合效果越好。

关键词: 不相容体系, 共混物, 啮合同向双螺杆挤出机, 回流系数, 分布混合

Abstract: The flow fields of six different screw configurations at melt conveying section in an intermeshing co-rotating twin-screw extruder were simulated and in the meantime the corresponding experiment was carried out. The results showed that increasing the backflow coefficient can enhance the distributive mixing effect of polymer blend, and the greater the backflow coefficient is, the better the distributive mixing performance will be.

Key words: incompatible system, blend, intermeshing co-rotating twin screw extruder, backflow coefficient, distributive mixing