A Simplified Model for the Melting of Polymer Pellets under Compression in a Twin-Screw Extruder

Linjie Zhu, K. A. Narh

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Plastic energy dissipation (PED) is an important mechanism involving the melting of polymer in a twin-screw extruder. In the present study, the melting behavior of polymer pellets under compression is studied by a simplified model with the finite element method, based on the fact that mechanical energy from the deformation of a single pellet is converted into heat energy. The model shows that the heating of the pellet is not uniform. Under compression, the contact area of the pellet yields first, and the deformation in the pellet depends on the compression ratio and properties of the pellet. The simulated results show that the temperature in the volume around the line passing through the contacting point and the center of the pellet is higher than the temperature further from the contact area.

Original languageEnglish (US)
Pages (from-to)543-548
Number of pages6
JournalSIMULATION
Volume82
Issue number8
DOIs
StatePublished - Aug 2006

All Science Journal Classification (ASJC) codes

  • Software
  • Modeling and Simulation
  • Computer Graphics and Computer-Aided Design

Keywords

  • Polymer pellets
  • dynamic compression
  • particle dispersed melting
  • plastic energy dissipation
  • plasticating extrusion

Fingerprint

Dive into the research topics of 'A Simplified Model for the Melting of Polymer Pellets under Compression in a Twin-Screw Extruder'. Together they form a unique fingerprint.

Cite this