Compatibility Study of HNBR/Silicone Rubber Blends

HNBR/Silicone 고무의 상용성에 관한 연구

  • Oh, Taeg-Su (Polymer Research Team, Research Institutd of Industrial Science & Technology(RIST)) ;
  • Ryou, Jin-Ho (Polymer Research Team, Research Institutd of Industrial Science & Technology(RIST)) ;
  • Kim, Chang-Hee (Kwangsung Rubber Roll Co. LTD.)
  • 오택수 (산업과학기술연구소 고분자응용연구팀) ;
  • 류진호 (산업과학기술연구소 고분자응용연구팀) ;
  • 김창희 (광성고무롤(주))
  • Published : 1996.05.30


The characteristic of silicone rubber can be seen from its resistance to both low and high temperature, whereas HNBR is resistant only in high temperature moderatly although it can be compounded to give good tensile properties, good oil resistance while silicone rubber severely lacks in these qualities. This study was initiated a balance of properties by blending HNBR and silicone rubber which is not considered for commercial blending; blends of HNBR with silicone rubber tend to show immiscible due to dissimilar nature of silicone and HNBR, the possibility of phase separation cannot be ruled out, in unfilled system after vulcanisation leading to premature failure. Attempt has been made to improve compatibility and minimise the layer seperation by the use of compatibilizer. Both filled and unfilled systems, in presence and absence of compatibilizer have been studied. Improvement in tensile properties of the blends or are observed as compared to the non-blended rubber. Different ratios of HNBR and silicone rubber are represented in this study. Blends of HNBR with silicone rubber were immiscible system. The tensile strength increased with filler loading.