Morphological development during injection molding of self-reinforcing composites. II: Numerical simulations and analytical predictions

Zhigang Li, Kwabena Narh

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

In this study, combined numerical simulation of injection molding and analytical calculations have been used to determine the velocity and elongational strain in the advancing melt front (AMF) region, during the molding of PET/LCP blends, at various injection molding conditions. A model is proposed that establishes the relationship between the aspect ratio of LCP fibers and elongational strain, based on the assumption of an affine deformation of the LCP domains. This model enables us to predict the processing dependent morphology of injection molded PET/LCP blends. The effect of processing parameters on the morphology development during injection molding were investigated. The studies show that injection speed and mold temperature have significant effects on the morphological development of the blends, compared with the effect of the melt temperature. A good correlation between calculated and scanning electron microscopy results was obtained.

Original languageEnglish (US)
Pages (from-to)978-987
Number of pages10
JournalPolymer Composites
Volume21
Issue number6
DOIs
StatePublished - Dec 1 2000

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

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