Physical Properties of Silicone Rubber/Clay Composites According to the Clay Type and Modification

Clay의 종류 및 표면처리가 silicone rubber/clay 복합체의 물성에 미치는 영향

  • Yoon, Jin-San (Department of Polymer Science and Engineering, Inha University) ;
  • Kim, Eung-Soo (Department of Polymer Science and Engineering, Inha University) ;
  • Kim, Eun-Jeong (Department of Polymer Science and Engineering, Inha University) ;
  • Lee, Tae-Hwa (Department of Polymer Science and Engineering, Inha University)
  • 윤진산 (인하대학교 고분자공학과) ;
  • 김응수 (인하대학교 고분자공학과) ;
  • 김은정 (인하대학교 고분자공학과) ;
  • 이태화 (인하대학교 고분자공학과)
  • Published : 2009.09.30


Modification of clay surface was attempted by treating the clay with bis[(3-triethoxysilylpropyl)tetra sulfide (TSS) to raise the hydrophobicity and to induce a chemical reaction between the clay and the high temperature vulcanization-type silicone rubber matrix with purpose of improving the compatibility between the components, and thereby Na-$MMTS_4$ and Fe-$MMTS_4$ were synthesized by treating Na-MMT and Fe-MMT with TSS, respectively. Silicone rubber/clay composites were prepared by compounding the clays with silicone rubber. Thermal stability and mechanical properties were evaluated as a function of the clay types and the surface modification.

Clay의 표면을 bis[(3-triethoxysilylpropyl)tetra sulfide (TSS)으로 처리하면 clay 표면의 소수성이 증가 될 뿐만 아니라 high temperature vulcanization 형 silicone rubber(HTV)와 화학적 반응이 가능하기 때문에 clay와 silicone rubber 사이의 상용성이 향상될 수 있을 것으로 예상되어 TSS를 이용하여 Na-MMT와 Fe-MMT의 silicate 층 표면에 tetra sulfide 그룹을 도입시킨 Na-$MMTS_4$와 Fe-$MMTS_4$를 각각 제작하였다. 이들 clay를 HTV silicone rubber와 compounding하여 silicone rubber/clay composites를 제작하였으며, clay의 종류 및 표면개질에 따른 silicone rubber 복합체의 열적안정성 및 기계적 물성을 평가하였다.


  1. A. C. Balazs, C. Singh, and E. Zhulina, 'Modeling the interactions between polymers and clay surfaces through self-consistent field theory', Macromolecules, 31, 8370 (1998)
  2. D. V. Kuznetsov and A. C. Balazs, 'Phase behavior of end-functionalized polymers confined between two surfaces', J. Chem. Phys., 113, 2479 (2000)
  3. E. P. Giannelis, 'Polymer layered silicate nanocomposites', Adv. Mater., 8, 29 (1996)
  4. M. Okamoto, 'Recent advances in polymer/layered silicate nanocomposites: an overview from science to technology', Mater. Sci. Tech. Lond., 22, 756 (2006)
  5. S. S. Ray and M. Okamoto, 'Polymer/layered silicate nanocomposites: a review from preparation to processing', Prog. Polym. Sci., 28, 1539 (2003)
  6. S.D. Burnside and E.P. Giannelis, 'Synthesis and properties of new poly(dimethylsiloxane) nanocomposites', Chem. Mater., 7, 1597 (1995)
  7. P.B. Messersmith and E.P. Giannelis, 'Synthesis and barrier properties of poly(-caprolactone)-layered silicate nanocomposites', J. Polym. Sci. Part A: Polym. Chem., 33, 1047 (1995)
  8. A. Usuki, Y. Kojima, M. Kawasumi, A. Okada, Y. Fukushima, T. Kurauchi, and O. Kamigaito, 'Synthesis of nylon 6-clay hybrid' J. Mater. Res., 8, 1179 (1993)
  9. K. Yano, A. Usuki, T. Kurauchi, and O. Kamigaito, 'Synthesis and properties of polyimide-clay hybrid', J. Polym. Sci. Part A: Polym. Chem., 31, 2493 (1993)
  10. P.B. Messersmith and E.P. Giannelis, 'Synthesis and characterization of layered silicate-epoxy nanocomposites', Chem. Mater., 6, 1719 (1994)
  11. Y. Wang, L. Zhang, C. Tang, and D. Yu, 'Preparation and characterization of rubber-clay nanocomposites', J. Appl. Polym. Sci., 78, 1879 (2000)<1879::AID-APP50>3.0.CO;2-1
  12. R. A. Vaia, H. Ishii, and E. P. Giannelis, 'Synthesis and properties of two-dimensional nanostructures by direct intercalation of polymer melts in layered silicates' Chem. Mater., 5, 1694 (1993)
  13. M. Pramanik, S. K. Srivastava, B. K. Samantaray, and A. K. Bhowmick, 'Rubber-clay nanocomposite by solution blending', J. Appl. Polym. Sci., 87, 2216 (2003)
  14. L. Song and Y. Hu, 'Study on the solvothermal preparation of polyethylene/organophilic montmorillonite nanocomposites', J. Mater. Chem., 12, 3152 (2002)
  15. M. L. Q. A. Kaneko and I. V. P. Yoshida, 'Effect of natural and organically modified montmorillonite clays on the properties of polydimethylsiloxane rubber', J. Appl. Polym. Sci., 108, 2587 (2008)
  16. L. Bokobza, 'Elastomeric composites. I. silicone composites', J. Appl. Polym. Sci., 93, 2095 (2004)
  17. S. Ray and A. K Bhowmick, 'Synthesis, characterization and properties of montmorillonite clay-polyacrylate hybrid material and its effect on the properties of engage-clay hybrid composite', Rubber. Chem. Technol., 74, 835 (2001)
  18. J. Wang, Y. Chen, and Q. Jin, 'Organic montmorillonite as a substitute for aerosilica in addition-type liquid silicone rubber systems', Macromol. Chem. Phys., 206, 2512 (2005)
  19. S. Joly, G. Garnaud, R. Ollitrault, L. Bokobza, and J. E. Mark, 'Organically modified layered silicates as reinforcing fillers for natural rubber', Chem. Mater., 14, 4202 (2002)
  20. A. Usuki, A. Tukigase, and M. Kato, 'Preparation and properties of EPDM–clay hybrids', Polymer, 43, 2185 (2002)
  21. M. Kato, A. Tsukigase, H. Tanaka, A. Usuki, and I. Inai, 'Preparation and properties of isobutylene-isoprene rubber-clay nanocomposites', J. Polym. Sci. Part A: Polym. Chem., 44, 1182 (2006)
  22. J. Brandrup and E. H. Immergut, eds., Polymer Handbook, 3rd ed., Wiley, New York, sec. VII, 176, (1989)
  23. G. X. Chen, J. B. Choi, and J. S. Yoon, 'The role of functional group on the exfoliation of clay in poly(L-lactide)', Macromol. Rapid. Commun., 26, 183 (2005)
  24. T. J. Pinnavaia, G. W. Beall, Polymer-clay nanocomposites, Wiley: NY, US, (2000)
  25. B. K. G. Theng, Chemistry of Clay-Organic Reactions, Wiley, NY, US, (1974)
  26. G. L. Wikes and J. Wen, 'Organic/inorganic hybrid network materials by the sol−gel approach', Chem. Mater., 8, 1667 (1996)
  27. T. Y. Tsai, S. T. Lu, C. J. Huang, and J. X. Liu, 'The structure-property relationship of novolac cured epoxy resin/clay nanocomposites', J. Polym. Eng. Sci., 48, 467 (2008)
  28. E. S. Kim, E. J. Kim, J. H. Shim, and J. S. Yoon, 'Thermal stability and ablation properties of silicone rubber composites', J. Appl. Polym. Sci., 110, 1263 (2008)
  29. Y. Zhang, Y. Hu, L. Song, J. Wu, and S. Fang, 'Influence of Fe-MMT on the fire retarding behavior and mechanical property of (ethylene-vinyl acetate copolymer/magnesium hydroxide) composite', Polym. Adv. Technol., 19, 960 (2008)
  30. N. N. Herrera, J. M. Letoffe, J.L. Putaux, L. David, and E. B. Lami, 'Aqueous dispersions of silane-functionalized laponite clay platelets. a first step toward the elaboration of water-based polymer/clay nanocomposites', langmuir, 20, 1564 (2004)