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

Document Type

Article

Publication Date

10-15-2001

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.

Identifier

0035886749 (Scopus)

Publication Title

Journal of Polymer Science Part B Polymer Physics

External Full Text Location

https://doi.org/10.1002/polb.1218

ISSN

08876266

First Page

2461

Last Page

2468

Issue

20

Volume

39

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