中国塑料 ›› 2020, Vol. 34 ›› Issue (5): 52-58.DOI: 10.19491/j.issn.1001-9278.2020.05.009

• 加工与应用 • 上一篇    下一篇

场协同对PP/PS复合体系传热传质性能的影响

鉴冉冉1,2,3, 史忠鹤2, 丁玉梅2, 杨卫民2()   

  1. 1.青岛科技大学机电工程学院,山东 青岛 266061
    2.北京化工大学机电工程学院,北京 100029
    3.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,加拿大安大略省 多伦多 M5S 3B3
  • 收稿日期:2020-02-10 出版日期:2020-05-26 发布日期:2020-05-22

Effect of Field Synergy on Heat and Mass Transfer Performance of PP/PS Composite System

Ranran JIAN1,2,3, Zhonghe SHI2, Yumei DING2, Weimin YANG2()   

  1. 1.College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China
    2.College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
    3.Centre for Biocomposites and Biomaterial Processing, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto M5S 3B3, Canada
  • Received:2020-02-10 Online:2020-05-26 Published:2020-05-22
  • Contact: Weimin YANG E-mail:yangwm@mail.buct.edu.cn

摘要:

从动量和能量守恒方程出发,提出速度场与温度场的协同耦合作用对聚合物流动与换热具有重要影响,并以此为依据设计了新型扭转螺杆结构和场协同螺杆。以聚丙烯(PP)和聚苯乙烯(PS)为原料制备PP/PS复合材料体系,通过挤出试验对比研究了常规螺杆与场协同螺杆的传热传质性能。结果表明,相对于常规螺杆,设置有扭转螺杆结构的场协同螺杆的数均粒径更小、粒径分布密度和平均停留时间更大,提高了挤出机的混合能力;场协同螺杆的对流换热系数更大、径向温差更小,提高了挤出机的换热能力。

关键词: 场协同, 传热传质, 扭转螺杆结构, 混合能力, 换热能力

Abstract:

In terms of the conservation equations of momentum and energy, the synergy effect from the velocity and temperature fields was proposed as an important influence factor on the flow and heat transfer of polymer. A novel torsion screw configuration and field synergy screw were designed, and the heat and mass transfer properties of conventional screw and field synergy screw were studied through extrusion experiments for the polypropylene/polystyrene compo?sites. The results indicated that the field synergy screws with a torsion screw configuration had a smaller average particle size, a larger particle size distribution density and a longer average residence time compared to the conventional screw. This can improve the mixing capability of the extruder. The field synergy screws had a larger convection heat transfer coefficient and a smaller radial temperature difference, which improved the heat transfer ability of the extruder.

Key words: field synergy, heat and mass transfer, torsion screw configuration, mixing capability, heat transfer capability

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