Computer simulation of stress-induced crystallization in injection molded thermoplastics

Document Type

Article

Publication Date

1-1-2001

Abstract

Injection molding of semicrystalline plastics was simulated with the proposed stress-induced crystallization model. A pseudo-concentration method was used to track the melt front advancement. Stress relaxation was considered using the WFL model. Simulations were carried out under different processing conditions to investigate the effect of processing parameters on the crystallinity of the final part. The simulation results reproduced most of the experimental results in the literature. Comparison is made between the slow-crystallizing polymer (PET) and fast-crystallizing polymer (PP) to demonstrate the effect of stress on the crystallization kinetics during the injection molding process for materials with different crystallization properties. The results show that for fast-crystallizing plastics, stress has little effect on the final crystallinity in the injection molded parts.

Identifier

0035517004 (Scopus)

Publication Title

Polymer Engineering and Science

External Full Text Location

https://doi.org/10.1002/pen.10896

ISSN

00323888

First Page

1996

Last Page

2012

Issue

11

Volume

41

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