Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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A Study on the Mechanical Properties and Shrinkage of Thermoplastic Elastomer

열가소성 엘라스토머의 기계적 물성과 수축에 관한 연구

  • 한성렬 (부경대학교 기계공학부 대학원) ;
  • 김준형 ((주)화승R&A 기술연구소) ;
  • 전승경 ((주)화승R&A 기술연구소) ;
  • 정영득 (부경대학교 기계공학부)
  • Published : 2007.02.01
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Abstract

Thermoplastic elastomer(TPE) can be recycled and molded such as commercial thermoplastic. Therefore TPE has being widely applied on automobile, household and etc. in these days. This study shows the variation of mechanical properties and shrinkage on TPE moldings for variation of injection molding conditions such as injection pressure, holding pressure, melt temperature, mold temperature and etc. Mechanical properties in relation to tensile strength, hardness and shrinkage in connection with precision dimension of part are investigated. The tensile strength and shrinkage of the experimental TPEs are mainly influenced by injection pressure and melt temperature. All injection molding conditions scarcely affect on hardness. To verify the variation of tensile strength and shrinkage, morphology of TPE molding was scanned by the SEM. The morphology showed that as the melt temperature increased, the rubber particles on the TPE became smaller and widely were dispersed. This behavior of rubber particles influenced on the increase of tensile strength.

Keywords

References

  1. A. Mitsuo, 2003, Thermoplastic elastomer, Kog-yo Chosakai Publishing Co., Ltd., pp. 13-15
  2. D. Weng, J. Andries, P. Morin, K. Saunders, J. Politis, 2000, Fundamental and material development for thermoplastic elastomer(TPE) overmolding, Journal of Injection Molding Technology, Vol. 4, No.1, pp. 22-28
  3. K. Naskar, J. W. M. Noordermeer, 2006, Dynamically vulcanized PP/EPDM blends: Effects of multifunctional peroxides of crosslinking agents, ANTEC 2004, pp. 4202-4219
  4. S. R. Han, Y. D. Jeong, 2006, Mechanical properties of elastomer TPVs due to injection molding conditions, Journal of the Korean Society of Manufacturing Process Engineers, Vol. 5, No.1, pp. 27-32
  5. J. Yun, R. Patel, D. C. Worley II, 2004, High performance thermoplastic vulcanizates(TPVs) for long term temperature application, ANTEC 2004, pp.4172-4176
  6. A. Y. Coran, B. Das, R. Patel, 1978, US Patent 4, 104,210
  7. A. Y. Coran, R. Patel, 1981, US Patent 4.271,049
  8. K. Jayaraman, P. Papworthe, C. Shu, M.D. Wolkowicz, 2002, Analysis of tiger striping in injection molded TPO, ANTEC 2002
  9. B. Ohlsson, H. Hassander, , Blends and thermoplastic interpenetrating polymer networks of polypropylene and polystyrene-block-poly(ethylene-stat-butylene)-block-polystyrene triblock copolymer. 1: Morphology and structure-related properties, Polymer engineering & Science, Vol. 36, Issue 4, pp. 501-510 https://doi.org/10.1002/pen.10436
  10. W. Zoetelife, M. Teeuwen, 2003, Mechanical behavior of TPV in automotive sealing systems, ANTEC 2003, pp. 2496-2500
  11. K. B. Kim, 2004, The tensile strength according to molding shrinkage for polycarbonates injection molding, M.S. thesis, Pukyong National University, pp.30-40
  12. Korea plastic information center, 2001, The series of book for entrance to a plastics industry-Easy understanding rubber and elastomer, Korea plastic information center press, pp. 89-112
  13. S. H. Park, 2004, Shrinkage behavior on the various shape of polycarbonate injection molding, M. Sc. thesis, Pukyong National University, pp. 37-38
  14. Y. S. Choi, 2004, A study on shrinkage behavior according to injection molding process, Ph.D. thesis, Pukyong National University, pp. 68-69
  15. A. B. Strong, 1996, Plastics: Materials and Processing, Prentice-Hall, Inc., pp. 239-242

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