Prediction of mechanical property of glass fiber reinforced polycarbonate and evaluation of warpage through injection molding

Da Mi Moon, Tae Gyun Choi, Min Young Lyu

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Most plastics products are being produced by injection molding process. However, mold shrinkage is inevitable in injection molding process and it deteriorates dimensional quality through deflections and warpages. Mold shrinkage depends upon the material property of resin as well as injection molding condition. In this study, material property of resin has been predicted for glass fiber reinforced polycarbonate to control the warpage, and computer simulation of injection molding has been performed using predicted property. It was observed that the deflection of part decreased by the glass fiber reinforced resin. In order to verify the validity of this method and confidence of results, experiments of injection molding were performed. The results of experiments and computer simulations showed good agreement in their tendency of deflections. Consequently, it was concluded that the method of designing the material property of resin conducted in this study can be utilized to control the dimensional accuracy of injection molded products.

Original languageEnglish
Pages (from-to)708-713
Number of pages6
JournalPolymer (Korea)
Volume38
Issue number6
DOIs
StatePublished - 1 Nov 2014

Keywords

  • Deflection
  • Glass fiber reinforced polycarbonate
  • Injection molding
  • Property prediction
  • Warpage

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