中国塑料 ›› 2016, Vol. 30 ›› Issue (01): 86-91 .DOI: 10.19491/j.issn.1001-9278.2016.01.015

• 加工与应用 • 上一篇    下一篇

三螺杆挤出机中剪切-拉伸交变流场对PP/PE-HD体系增韧效果的影响

姜李龙1,孙靖尧1,杨昆晓1,余东泉1,信春玲2,何亚东2   

  1. 1. 北京化工大学机电工程学院2. 北京化工大学
  • 收稿日期:2015-04-09 修回日期:2016-02-25 出版日期:2016-01-26 发布日期:2016-01-26

Influences of Three-screw Extruders’ Shear-tensile Alternating Flow Field on Toughening Effect of PP/PE-HD Blend Systems

  • Received:2015-04-09 Revised:2016-02-25 Online:2016-01-26 Published:2016-01-26

摘要: 利用倒三角形排列三螺杆挤出机与传统双螺杆挤出机对不同黏度比的聚丙烯/高密度聚乙烯(PP/PE-HD)体系进行混炼加工,研究了三螺杆挤出机中剪切拉伸交变流场对于高黏度比聚合物两相体系的分散混合及分布混合效果的影响;并通过高黏度比体系的混合效果证明三螺杆挤出机中剪切拉伸交变流场的作用效果及机理。结果表明,在高黏度比体系的加工中,倒三角形排列三螺杆挤出机分散与分布混合效果明显优于双螺杆挤出机,且三螺杆挤出机的增韧效果随着体系黏度比的增大而提升。

关键词: 三螺杆挤出机, 双螺杆挤出机, 高黏度比, 交变流场, 共混改性

Abstract: Effect of shear-tensile alternating flow field on the dispersive and distributive mixing performance of high viscosity ratio blend systems was studied using a series of PP/PE-HD blends with different viscosity ratio in a triangle arrayed three-screw extruder and a traditional twin-screw extruder. It showed that the three-screw extruder gave better dispersive and distributive mixing performance for high viscosity ratio composite systems than those of the twin-screw extruder, and the toughening effect was enhanced with increasing viscosity ratio of the blend systems.

Key words: three-screw extruder, twin-screw extruder, high viscosity ratio, alternating flow field, blending modification