Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
권호 표지
DOI QR코드

DOI QR Code

Chlorine Effect on Thermal Aging Behaviors of BR and CR Composites

  • Received : 2010.06.21
  • Accepted : 2010.07.28
  • Published : 2010.09.20
Download PDF
⟨ Previous Next ⟩

Abstract

Chloroprene is a chlorine substituent of 1,3-butadiene. Butadiene rubber (BR) and chloroprene rubber (CR) composites were thermally aged at 60, 70, 80, and $90^{\circ}C$ for 2 - 185 days in a convection oven and changes of the crosslink densities by the accelerated thermal aging were investigated. The crosslink densities increased as the aging time elapsed and as the aging temperature became higher. Degrees of the crosslink density changes of the BR composite were on the whole larger than those of the CR one except the short-term thermal aging at 60 and $70^{\circ}C$. The crosslink densities abnormally increased after themal aging at high temperatures for a long time. Activation energies for the crosslink density changes of the rubber composites tended to increase with increase of the aging time and the variation showed a local minimum. The activation energies of the CR composite were lower than those of the BR one. The experimental results were explained with a role of ligand of chlorine atom of CR in a zinc complex, steric hindrance by chlorine atom of CR, and oxidation of rubber chain.

Keywords

References

  1. Johnson, P. R. Rubber Chem. Technol. 1976, 49, 650. https://doi.org/10.5254/1.3534978
  2. Hwang, B. K.; Hong, K. H.; Park, H. Y.; Jeon, I. R.; Seo, K. H. Elast. Comps. 2009, 44, 299.
  3. Choi, S.-S. J. Appl. Polym. Sci. 2002, 83, 2609. https://doi.org/10.1002/app.10201
  4. Morrison, N. J.; Porter, M. Rubber Chem. Technol. 1984, 57, 63. https://doi.org/10.5254/1.3536002
  5. Chen, C. H.; Koenig, J. L.; Shelton, J. R.; Collins, E. A. Rubber Chem. Technol. 1981, 54, 734. https://doi.org/10.5254/1.3535831
  6. Choi, S.-S. Kor. Polym. J. 1997, 5, 39.
  7. Layer, R. W. Rubber Chem. Technol. 1992, 65, 211. https://doi.org/10.5254/1.3538601
  8. Choi, S.-S. Elast. Comps. 2009, 44, 116.
  9. Choi, S.-S.; Jang, J.-H. Elast. Comps. 2009, 44, 442.
  10. Choi, S.-S. Polym. Int. 2001, 50, 107. https://doi.org/10.1002/1097-0126(200101)50:1<107::AID-PI593>3.0.CO;2-Z
  11. Choi, S.-S.; Han, D.-H.; Ko, S.-W.; Lee, H. S. Bull. Kor. Chem. Soc. 2005, 26, 1853. https://doi.org/10.5012/bkcs.2005.26.11.1853
  12. Choi, S.-S.; Ha, S.-H.; Woo, C.-S. Bull. Kor. Chem. Soc. 2006, 27, 429. https://doi.org/10.5012/bkcs.2006.27.3.429
  13. Choi, S.-S.; Han, D.-H. J. Appl. Polym. Sci. 2008, 110, 3560. https://doi.org/10.1002/app.28866
  14. Choi, S.-S.; Han, D.-H. Thermochim. Acta 2009, 490, 8. https://doi.org/10.1016/j.tca.2009.01.030
  15. Choi, S.-S.; Han, D.-H. J. Appl. Polym. Sci. 2009, 114, 935. https://doi.org/10.1002/app.30699
  16. Brown, R. P.; Butler, T. Natural Ageing of Rubber. Changes in Physical Properties over 40 Years; RAPRA Technology Ltd.: 2000.
  17. Brown, R. P.; Butler, T.; Hawley, S. W. Ageing of Rubber. Accelerated Heat Ageing Test Results; RAPRA Technology Ltd.: 2001.
  18. Jang, J.-H.; Choi, S.-S. Elast. Comps. 2009, 44, 442.
  19. Ahn, W. S.; Park, K.-H. Elast. Comps. 2009, 44, 269.
  20. Choi, S.-S. Elast. Comps. 2009, 44, 116.
  21. Sae-oui, P.; Sirisinha, C.; Thepsuwan, U.; Hatthapanit, K. Eur. Polym. J. 2007, 43, 185. https://doi.org/10.1016/j.eurpolymj.2006.10.015
  22. Gradwell, M. H. S.; McGill, W. J. J. Appl. Polym. Sci. 1996, 61, 1131. https://doi.org/10.1002/(SICI)1097-4628(19960815)61:7<1131::AID-APP9>3.0.CO;2-N
  23. Gradwell, M. H. S.; McGill, W. J. J. Appl. Polym. Sci. 1996, 61, 1515. https://doi.org/10.1002/(SICI)1097-4628(19960829)61:9<1515::AID-APP11>3.0.CO;2-P
  24. Layer, R. W.; Lattimer, R. P. Rubber Chem. Technol. 1990, 63, 426. https://doi.org/10.5254/1.3538264

Cited by

  1. Compressive stress relaxation modeling of butadiene rubber under thermo-oxidative aging vol.134, pp.12, 2016, https://doi.org/10.1002/app.44630
  2. A Combined Experimental and Molecular Simulation Study of Factors Influencing the Selection of Antioxidants in Butadiene Rubber vol.121, pp.6, 2017, https://doi.org/10.1021/acs.jpcb.6b12339
  3. Thermal Aging Behaviors of Weather Resistant Rubber Composites of EPDM, IIR, and BIIR vol.47, pp.2, 2010, https://doi.org/10.7473/ec.2012.47.2.148
  4. CPB(Cold-Pad-Batch) 염색 패더롤 고무에서 화학적 노화로 인한 가속 수명예측 vol.29, pp.3, 2010, https://doi.org/10.5764/tcf.2017.29.3.155