Article
  • Numerical Simulation on the Enhanced Mixing of Polymer Melt by Single Screw with Torsion Elements in the Homogenizing Section
  • Ranran Jian, Weimin Yang , Lisheng Cheng, and Pengcheng Xie

  • College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing100029, China

  • 토션엘리먼트가 있는 단축압출기의 균질화 구간에서 고분자 용융액의 혼합 성능 향상에 대한 수치모사
Abstract

As one of key factors that determine the quality of products, the homogenization of polymer melt is closely dependent on the mixing of polymers. The mixing of polymer melt in the homogenizing section by a single screw with torsion elements was analyzed with the computational fluid dynamics (CFD) simulation. The simulation results reveal that screws with such torsion elements arranged in a decentralized form have smaller segregation scale, distribution index and higher mixing efficiency, compared with the conventional screw. The decentralized arrangement is more effective for mixing than the centralized distribution. The rotational flow induced by the torsion elements can significantly enhance the mass transfer process and improve mixing and plasticizing. Compared with those in conventional screw, the distributions of temperature and viscosity are more uniform at the outlet of torsion screws, which also made the torsion element generally more effective and efficient for mixing and plasticizing.


Keywords: torsion element, distributive mixing, dispersive mixing, mixing efficiency, plasticizing quality

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2018; 42(6): 910-918

    Published online Nov 25, 2018

  • 10.7317/pk.2018.42.6.910
  • Received on Feb 28, 2018
  • Revised on Apr 16, 2018
  • Accepted on May 23, 2018

Correspondence to

  • Weimin Yang
  • College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing100029, China

  • E-mail: yangwm@mail.buct.edu.cn