Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effects of Injection Molding Parameters and their Interactions on Mechanical Properties of PMMA/PC Blend

  • Hoang, Van Thanh (Faculty of Mechanical Engineering, University of Science and Technology, The University of Danang) ;
  • Luu, Duc Binh (Faculty of Mechanical Engineering, University of Science and Technology, The University of Danang) ;
  • Toan Do, Le Hung (Faculty of Mechanical Engineering, University of Science and Technology, The University of Danang) ;
  • Tran, Ngoc Hai (Faculty of Mechanical Engineering, University of Science and Technology, The University of Danang) ;
  • Nguyen, Pham The Nhan (Faculty of Mechanical Engineering, University of Science and Technology, The University of Danang) ;
  • Tran, Minh Sang (Faculty of Mechanical Engineering, University of Science and Technology, The University of Danang) ;
  • Tran, Minh Thong (Faculty of Mechanical Engineering, University of Science and Technology, The University of Danang)
  • Received : 2020.09.08
  • Accepted : 2020.11.21
  • Published : 2020.12.27
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Abstract

A combination of Polycarbonate (PC) material and Polymethylmethacrylate (PMMA), fabricated using an injection molding machine, has been investigated to determine its advantages, as studied in Ref. 1). This paper aims to investigate the optimization of PMMA/PC blend for both tensile yield strength and impact strength. Furthermore, interaction effects of process conditions on mechanical properties including tensile yield strength and impact strength of PMMA/PC blend by injection molding process are interpreted in this study. Tensile and impact specimens are designed following ASTM, type V, and are fabricated by injection molding process. The processing conditions such as melt temperature, mold temperature, packing pressure, and cooling time are applied; each factor has three levels. As a result, in comparison with optimization of separated responses, mechanical properties of PMMA/PC are found to decrease when optimizing both tensile and impact strengths simultaneously. The melt temperature is found to be the most significant interaction parameter with the mold temperature and packing pressure. In addition, there is more interaction between the mold temperature and cooling time. This investigation provides a useful understanding of the control of injection molding processing of polymer blends in optical application.

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References

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