Modeling of particle-dispersed melting mechanism and its application in corotating twin-screw extrusion

Linjie Zhu, Kwabena Narh, Xiaozheng Geng

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Particle-dispersed melting is a complex but important melting mechanism in the corotating twin-screw extruder. In this study, the complex multi-particle-dispersed system was simplified into a single-particle melting model. The finite-difference method was introduced to solve this problem. The simulation results show that the melting of a particle may involve two steps: the heating stage and melting stage. The heating time and melting time depend on solid concentration, initial melt and solid temperature, and shear rate. Calculations indicate that high solid concentration and solid temperature, low melt temperature and shear rate will result in a more uniform temperature distribution after polymer melting. The model offers valuable information for designing the melting zone in a corotating twin-screw extruder, especially at high screw speed.

Original languageEnglish (US)
Pages (from-to)2461-2468
Number of pages8
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume39
Issue number20
DOIs
StatePublished - Oct 15 2001

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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