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

Abstract

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.

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