Improvement of Properties of Silica-Filled SBR Compounds Using NBR: Influence of Separate Load of SBR and NBR

NBR를 이용한 실리카로 보강된 SBR 배합물의 특성 향상 : SBR과 NBR의 분리 첨가 배합의 영향

  • Choi, Sung-Seen (Department of Applied Chemistry, Sejong University) ;
  • Kim, Beom-Tae (Research Center of Bioactive Materials, College of Natural Science, Chonbuk National University)
  • Published : 2005.03.31


Mixing condition and procedure affect properties or a filled rubber compound such as filler dispersion, viscosity, and bound rubber formation. Influence of separate load of styrene-butadiene rubber (SBR) and acrylonitrile-butadiene rubber (NBR) on properties or silica-filled SBR compounds containing NBR was studied. Cure time and cure rate became faster as NBR content increased. The crosslink density increased with increase in the NBR content. The bound rubber content also increased as the NBR content increased. NBR content of the bound rubber was higher than that of the compounded rubber. The bound rubber content was higher when SBR and NBR were loaded separately than when loading simultaneously. The cure time and cure rate were slower for the separate load than for the simultaneous one. The crosslink density was also lower for the former case than for the latter one.



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