DOI QR코드

DOI QR Code

A research of thermoplastic elastomer PP(Poly Propylene)/SEBS(Styrene Ethylene Butylene Styrene) blends

열가소성 탄성중합체인 PP/SEBS 혼합 연구

  • Han, Hyun Kak (Department of Chemical Engineering, Soonchunhyang University)
  • 한현각 (순천향대학교 나노화학공학과)
  • Received : 2018.06.14
  • Accepted : 2018.08.03
  • Published : 2018.08.31

Abstract

New physical properties of polymer materials were obtained by blending two or three different type of polymers. TPE is used widely in the display, automotive and electronics industries. Consumers have sought emotionally more sensitive and advanced interior automotive parts. A polymer with high foamibility (Ed note: Please check this.) and flowability would be more plausible. TPE composed of foam is a good polymer material to satisfy these trends. In this research, two different TPE were tested, focusing on foamibility and flowability. Two type of TPE were prepared. The first was blended Homo-PP, oil and SEBS. The second was Co-PP, oil and SEBS. The blending temperatures were $180^{\circ}C$, $190^{\circ}C$, and $260^{\circ}C$(second one). The blending speed was 50rpm and blending time was 5 min. The MI of the blended material was affected by the MI of PP and not affected by the blending temperature. The hardness and tensile elasticity were less affected by the MI of PP and blending temperature. The hardness and tensile elasticity were lower at a higher SEBS/Oil content ratio. The soft touch feel was higher with high SEBS/Oil contents. The IPN (Interpenentration polymer network) structure was observed by dissolving the SEBS/Oil layer in xylene. Strain-hardening phenomena also was observed. TPE behaves in a rubber and foamed closed-cell improved its stability.

Keywords

TPE;PP;MI;IPN;Foam

References

  1. B. Erman and J.E. Mark, In: J.E. Mark, B. Erman and FR Eirich, editors. science and technology of rubber. 2nd ed. San Diego (CA): Academic Press; 1994.
  2. A.N. Gent, In: J.E. Mark, B. Erman and ER Eirich, editors. Science and technology of rubber. 2nd ed. San Diego (CA): Academic Press; 1994. p. 1.
  3. M. D. Snyder, "Elastic linear copolyesters", US patent 2,623,031, du Pont de Nemours & Co., 1952.
  4. C. S. Schollenberger, "Simulated vulcanisates of polyurethane elastomers", US patent 2,871,218, B F Goodrich, 1959.
  5. C.S. Schollenberge. H. Scott, GR Moore. Paper at the Rubber Division Meeting; September 13, 1957; Rubber Chem. Technol. 1962;35;742. https://doi.org/10.5254/1.3539953
  6. CS Schollenberge. US Patent 2,871,218 (1959, to B.F. Goodrich Co.)
  7. W.P. Gergen. In: N.R. Legge, G. Holden, and H.E. Schroede, editors. Thermoplastic elastomers-a-c omprehensive review. Munich: Hanser Publishers; 1987. p. 507 [chapter 14].
  8. D.J. George. Handbook of thermoplastic elastomers. Elsevier, 2014.
  9. J.P. Kirkpatrick and D.T. Preston, Elastomerics 1988;120(10):30.
  10. A.J. Tinker, R.D. Icenogle and I. Whittle, Paper no. 48, presented at the Rubber Division of ACS Meeting, Cincinnati, OH; October 1988.
  11. W.L. Semon, US Patent 1,929,453 (1933, to B.F. Goodrich Co.)
  12. K. Ziegler, H. Holzkamp and H. Breil, Angew. Chem., 67, 541, 1995. https://doi.org/10.1021/ac00099a010
  13. G. Natta, Makromol. Chem., 16, 213, 1995.
  14. K. Sheidl, Polypropylene 2000 Conference, Zurich, 2000.
  15. B. Ohlsson, H. Hassander, B. Tornell, "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 and Science, Vol.36, No.4, pp.501-510, 1996. DOI: https://dx.doi.org/10.1002/pen.10436 https://doi.org/10.1002/pen.10436
  16. ASTM D1238-04 Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer1
  17. ASTM D412-06a Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers- Tension1
  18. S.H. Cho, Master's Thesis. "The study of Thermodynamic Elastomer PP/SEBS, Blends, Soonchunhyang Univ., 2017.
  19. J..W. Um, Master's Thesis., "A study on properties of Thermoplastic Elastomer(PP/SEBS) by content fo pp" Soonchunhyang Univ., 2017.
  20. Kresge EN. Rubber World 1993;208(2):31.
  21. A. K. Gupta and S. N. Purwar, J. Appl. Polyrn. Sci., 29, 1079, 1984. https://doi.org/10.1002/app.1984.070290406
  22. A. K. Gupta and S. N. Purwar, J. Appl. Polyrn. Sci., 29, 1595, 1984. https://doi.org/10.1002/app.1984.070290514
  23. P. H. Nam, P. Maiti, M. Okamoto, T. Kotako, T. Nakayama, M. Takada, M. Ohshima, A. Usuki, N. Hasegawa, H. Okamoto, "Foam processing and cellular structure of polypropylene/clay nanocomposites", Polymer Engineering and Science, Vol.42, No.9, pp.1907-1918, 2002. DOI: https://dx.doi.org/10.1002/pen.11083 https://doi.org/10.1002/pen.11083
  24. S.T. Lee, Foam Extrusion, Technomic Publishing Company, Inc., 2000.