摘要
介绍了一种新型场协同螺纹元件及可视化实验装置,在自行搭建的可视化实验平台上,开展了新型场协同螺杆元件强化传质的实验。对比观测了悬浮于高黏度硅油中示踪纤维在新型场协同螺杆元件和普通螺纹元件螺槽内的流动行为,通过对比分析新型场协同螺杆元件及普通螺纹元件内示踪纤维的取向变化,揭示了新型场协同螺杆元件在单螺杆挤出过程中熔体输送段的强化传质机理。实验结果表明,与普通螺纹元件相比,在场协同螺杆元件螺槽内形成了更为剧烈的涡旋流动,实现了螺槽顶部熔体与底部熔体的质量交换。而且,涡旋流动强化了螺槽内熔体的传质行为,特别是在螺槽深度方向的质量传递。
A new field collaborative screw element and visual experimental device was introduced. A experiment of strengthening mass transfer of new reinforced mass transfer mixing element was carried out on the self-developed visual experimental platform. The flow behavior of tracer fiber in high viscosity silicone oil was compared in solid solution conveying, the strengthening mass transfer mechanism of new field collaborative screw element was revealed in single screw extrusion process by comparing the change of trace fiber orientation in new field collaborative screw element and common thread element. The experimental results showed that the more vigorous vortex flow was formed in the presence of the screw element screw channel compared to the common thread element. The mass exchange between the top solution of screw channel and bottom meh was realized and the vortex flow strengthened the mass transfer behavior of the melt in the screw channel, especially in the mass transfer of the screw channel depth direction.
作者
赵世超
杨卫民
鉴冉冉
王萌萌
谢鹏程
ZHAO Shichao;YANG Weimin;JIAN Ranran;WANG Mengmeng;XIE Pengcheng(College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China)
出处
《塑料》
CSCD
北大核心
2017年第6期88-91,共4页
Plastics
基金
国家自然科学基金资助项目(51576012)
关键词
场协同
螺杆元件
纤维取向
流动行为
强化传质
field synergy
mixing element
fiber orientation
flow behavior
mass transfer enhancement
