场协同拉伸螺杆强化混合与传热机理的研究  

Study on enhancement mechanism of mixing and heat transfer of field⁃synergetic elongation screw

作　　者：黄士争 潘威 朱家威 Mohini Sain 杨卫民[3] 曾宪奎[1] 鉴冉冉 HUANG Shizheng;PAN Wei;ZHU Jiawei;MOHINI Sain;YANG Weimin;ZENG Xiankui;JIAN Ranran(College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,China;Centre for Biocomposites and Biomaterial Processing,Department of Mechanical and Industrial Engineering,University of Toronto,Toronto,ON M5S 3B3,Canada;College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Dalian Rubber&Plastics Machinery Co,Ltd,Dalian 116036,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061 [2]多伦多大学机械与工业工程系,生物复合材料及生物质材料加工中心,安大略省多伦多M5S 3B3 [3]北京化工大学机电工程学院,北京100029 [4]大连橡胶塑料机械有限公司,辽宁大连116036

出　　处：《中国塑料》2024年第9期101-106,共6页China Plastics

基　　金：国家自然科学基金(52206095);山东省自然科学基金(ZR2021QE232);山东省高等学校青创科技支持计划(2023KJ102)。

摘　　要：基于聚合物场协同塑化输运混炼原理,设计开发强化混合与换热的场协同拉伸螺杆新结构——场协同拉伸元件,利用ANSYS Polyflow对普通双头螺纹螺杆和不同拉伸元件排布的场协同拉伸螺杆进行了数值模拟,对比分析了不同螺杆构型对聚合物胶料的混合性能、传热性能以及塑化均匀性的影响。结果表明,场协同拉伸螺杆综合性能均优于普通螺纹螺杆,其中,场协同拉伸元件集中排布的螺杆B传热性能最优,场协同拉伸元件分散排布的螺杆F混合性能最优;场协同拉伸螺杆中拉伸元件的径向收敛流道改变了速度场的方向,使速度矢量产生了径向分量,促进了速度场与温度梯度场、速度梯度场的协同相互作用,增加流场中的拉伸流动和拉伸形变,强化了热质传递输运过程。Based on the principle of polymer field-synergistic plasticization,transportation and mixing,a field synergistic elonga-tion element with a new structure of field-synergistic elongation screw was designed and developed for enhancing mixing and heat transfer.The ANSYS Polyflow was employed to numerically simulate ordinary double head threaded screws and field synergis-tic elongation screws with different elongation element arrangements.The effects of screw configuration on the mixing perfor-mance,heat transfer performance,and plasticization uniformity of polymeric rubber were comparatively analyzed.The results indicated that the comprehensive performance of the field synergy elongation element was superior to that of the ordinary thread-ed screw.Among these screws,the heat transfer performance of screw B with concentrated arrangement of field synergy elonga-tion element was the best,and the mixing performance of screw F with the dispersed arrangement of field synergy elongation ele-ment was the best.The radial convergence channel of the elongation element in the field synergy elongation element changed the direction of the velocity field,generating radial components in the velocity vector.This promoted the synergistic interaction be-tween the velocity field and the temperature gradient and velocity gradient fields,increasing the stretching flow and deformation in the flow field and strengthening the heat and mass transfer and transportation process.

关 键 词：场协同原理 场协同拉伸螺杆 塑化质量 强化传热传质 

分 类 号：TQ320.663[化学工程—合成树脂塑料工业]