Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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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
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Abstract

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.

배합 조건과 공정은 충진제 분산, 점도, 결합고무 형성 등과 같은 고무 배합물의 특성에 영향을 준다. NBR과 SBR의 분리 첨가 배합이 NBR이 함유된 실리카로 보강된 고무 배합물의 특성에 미치는 영향에 대해 연구하였다. NBR 함량이 증가할수록 가교 시간과 속도는 빨라졌다. 가교밀도는 NBR 함량이 증가할수록 증가하였다. 결합고무량도 NBR 함량이 증가할수록 증가하였다. 결합 고무 중의 NBR 함량은 배합물 고무 중의 NBR 함량보다 높았다. 결합고무량은 동시첨가 배합의 경우보다 분리 첨가 배합의 경우 더 높았다. 가교 시간과 속도는 동시 첨가 배합의 경우보다 분리 첨가 배합때 더 느렸다. 가교밀도도 동시 첨가 배합의 경우보다 분리 첨가 배합의 경우 더 낮았다.

Keywords

References

  1. Ph. Cachet, P. Barruel, L. Barriquand, J. Grobert, Y. Bomal, and E. Prat, 'Dispersibility measurement of precipitated silicas - Influence of dispersion on mechanical properties', in Proceedings of the Rubber Division 144th Meeting, American Chemical Society, Paper No. 162 (1993)
  2. U. Gorl and A. Hunsche,' Advanced investigations into the silica/silane reaction system', in Proceedings of the Rubber Division 150th Meeting, American Chemical Society, Paper No. 76 (1996)
  3. U. Gorl and A. Hunsche, 'Investigation into the chemistry of the TESPT sulfur chain', in Proceedings of the Rubber Division 151st Meeting, American Chemical Society, Paper No. 38 (1997)
  4. A. S. Hashim, B. Azahari, Y. Ikeda, and S. Kohjiya, 'The effect of TESPT on silica reinforcement of styrene-butadiene rubber' , Rubber Chem. Technol., 71, 289 (1998)
  5. D. Jividen and H. Kaufman,'A dispersion aid for silica filler in rubber', Rubber World, 222(1), 24 (2000)
  6. S. Bandyopadhyay, P. P. De, D. K. Tripathy, and S. K. De,'Interaction between carboxylated nitrile rubber and precipitated silica: Role of (3-aminopropyl) triethoxysilane', Rubber Chem. Technol., 69, 637 (1996) https://doi.org/10.5254/1.3538391
  7. E. Sheng, I. Sutherland, R. H. Bradley, P. K. Freakley, 'Effects of a multifunctional additive on bound rubber in carbon black and silica filled natural rubbers', Eur. Polym. J., 32, 35 (1996)
  8. H. Ismail and H. H. Chia, 'The effects of multifunctional additive and vulcanization systems on silica filled epoxidized natural rubber compounds', Eur. Polym. J., 34, 1857 (1998)
  9. S.-S. Choi, 'Influence of cooling time between mixing stages on properties of carbon black-filled NR compounds', Kor. Polym. J., 7, 244 (1999)
  10. S.-S. Choi, 'Influence of mastication on properties of carbon black-filled NR compounds', Kor. Polym. J., 8, 73 (2000)
  11. S.-S. Choi, 'Influence of mixing procedure on properties of carbon black-filled natural rubber compounds', Kor. Polym. J., 8, 192 (2000)
  12. S.-S. Choi, 'Improvement of properties of silicafilled styrene-butadiene rubber compounds using acrylonitrile-butadiene rubber', J. Appl. Polym. Sci., 79, 1127 (2001)
  13. S.-S. Choi, 'Correlation of crosslink density with pyrolysis pattern of natural rubber vulcanizates with efficient vulcanizing cure system', J. Anal. Appl. Pyrolysis, 52, 105 (1999) https://doi.org/10.1016/S0165-2370(99)00041-8
  14. S.-S. Choi, 'Properties of silica-filled styrene-butadiene rubber compounds containing acrylonitrile-butadiene rubber: Influence of the acrylonitrile-butadiene rubber type', J. Appl. Polym. Sci., 85, 385 (2002)
  15. N. J. Morrison and M. Porter, 'Temperature effects on the stability of intermediates and crosslinks in sulfur vulcanization', Rubber Chem. Technol., 57, 63 (1984)