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

Document Type

Article

Publication Date

1-1-2006

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. © 2006, Sage Publications. All rights reserved.

Identifier

33750719634 (Scopus)

Publication Title

Simulation

External Full Text Location

https://doi.org/10.1177/0037549706071200

ISSN

00375497

First Page

543

Last Page

548

Issue

8

Volume

82

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