Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
권호 표지

Effects of Environmental Factors such as Temperature and Ozone Concentration on the Properties of BR/Crystalline Rubber Blend

BR고무/결정성고무 블렌드의 물성에 미치는 온도 및 오존농도 등의 환경인자의 영향

  • Park, Chan-Young (Division of Applied Chemical Engineering, Pukyong National University) ;
  • Lee, Won-Kee (Division of Applied Chemical Engineering, Pukyong National University) ;
  • Min, Seong-Kee (Division of Applied Chemical Engineering, Pukyong National University)
  • 박찬영 (부경대학교 공과대학 응용화학공학부) ;
  • 이원기 (부경대학교 공과대학 응용화학공학부) ;
  • 민성기 (부경대학교 공과대학 응용화학공학부)
  • Received : 2010.01.27
  • Accepted : 2010.02.18
  • Published : 2010.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

The butadiene rubber(BR) blends with chloroprene rubber(CR) were prepared by mechanical mixing method. Cure characteristics, mechanical properties, ozone resistance properties and dynamic mechanical properties were subsequently examined. The properties of ozone resistance of pure BR was significantly improved through blending with 50 wt% CR. Dynamic characteristics determined from a Rheovibron generally showed two glass transition($T_g$) for the entire blends, $tan{\delta}$ peak monotonically shifted toward the higher temperature with the increasing content of CR. Optimum cure time of compound was significantly lengthened with loading of CR.

기계적 혼련법으로 butadiene rubber(BR)과 대표적인 결정성고무인 chloroprene rubber(CR) 블렌드 혼련물을 제조하여, 이들의 가교 거동, 기계적 성질, 내오존성 및 동적 기계적 성질 등을 검토하였다. 내오존시험에 있어서 50 wt% CR 고무의 첨가에 의하여 크게 개선됨을 확인할 수 있었다. Rheovibron에 의한 동적 계적 특성 측정의 결과로부터 BR/CR 블렌드는 두 개의 전이를 보였으며 $tan{\delta}$ 피이크의 위치는 CR 고무의 함량이 증가함에 따라 고온 쪽으로 이동함을 확인할 수 있었다. 한편 CR 고무량이 증가할수록 최적 가황시간이 증가하는 경향을 보였다.

Keywords

References

  1. J. K. Kallitsis and N. K. Kalfoglou, "Compatibility of epoxidized natural rubber with thermoplastic and thermosetting resins", J. Appl. Polym. Sci., 37, 453 (1989). https://doi.org/10.1002/app.1989.070370212
  2. T. Marinovic, M. Sustar, A. Pertot, and Z. Susteric, "Properties and morphology of crosslinked butadiene-acrylonitrile rubber and polysulphide rubber (NBR/TM) blends", Polymer International, 45, 77 (1998). https://doi.org/10.1002/(SICI)1097-0126(199801)45:1<77::AID-PI889>3.0.CO;2-#
  3. S. H. Botros and Abdel-Nour, "Preparation and characterization of butyl/NBR vulcanizates", Polymer Degradation and Stability, 62, 479 (1998).
  4. R. F. Bauer and E. A. Dudley, "Compatibilization of Rubber Blends through Phase Interaction", Rubber Chem. Technol., 50, 35 (1977). https://doi.org/10.5254/1.3535131
  5. S. C George, K. N. Ninan, G. Greonincks, and S. Thomas, "Styrene-butadiene rubber/natural rubber blends: morphology, transport behaviour, and dynamic mechanical properties", J. App. Polym. Sci., 78, 1280 (2007).
  6. C. Sirisinha, S. Limcharoen, and J. Thunyarittikorn, "Oil resistance controlled by phase morphology in natural rubber/nitrile rubber blends", J. Appl. Poly. Sci., 87, 83 (2003). https://doi.org/10.1002/app.11673
  7. S. Chakrit, S. B. Limcharoen, and J. Thunyarittikorn, "Relationships among blending conditions, size of dispersed phase, and oil resistance in natural rubber and nitrile rubber blends", J. Appl. Poly. Sci., 82, 1232 (2001). https://doi.org/10.1002/app.1957
  8. A. Y. Coran, "Handbook of Elastomer-New Developments and Technology", Dekker, New York, 249 (1988).
  9. M. T. Ramesan, George Mathew, Baby Kuriakose, and Rosamma Alex, "Role of dichlorocarbene modified styrene butadiene rubber in compatibilisation of styrene butadiene rubber and chloroprene rubber blends", European Polymer Jourmal, 37, 719 (2001). https://doi.org/10.1016/S0014-3057(00)00157-9
  10. H. Ismail and H. M. Hairunezam, "The effect of a compatibilizer on curing characteristics, mechanical properties and oil resistance of styrene butadiene rubber/epoxidized natural rubber blends", European Polymer Journal, 37, 39 (2001). https://doi.org/10.1016/S0014-3057(00)00099-9
  11. P. Sae-oui, C. Sirisinha, U. Thepsuwan, and P. Thapthong, "Influence of accelerator type on properties of NR/EPDM blends", Polymer Testing, 26, 1062 (2007). https://doi.org/10.1016/j.polymertesting.2007.07.004
  12. H. Ismail and H. C. Leong, "Curing characteristics and mechanical properties of natural rubber/chloroprene rubber and epoxidized natural rubber/chloroprene rubber blends", Polymer Testing, 20, 509 (2001). https://doi.org/10.1016/S0142-9418(00)00067-2
  13. B. K. Kim and I. H. Kim, "Blends of Epoxidized Natural Rubber with Chloroprene Rubber", Polym.-Plast. Technol. Eng., 32, 167 (1993). https://doi.org/10.1080/03602559308019226
  14. R. P. Brown, "Physical Testing of Rubber", 2nd ed. Elsevier Appl. Sci., London & New York, p. 291, 1986.
  15. D. J. Buckley and S. B. Robinson, "Ozone attack on rubber vulcanizates", J. Polym. Sci., 19, 145 (1956). https://doi.org/10.1002/pol.1956.120199115
  16. ASTM Designation, D 2084 76T, 1972.
  17. ASTM Designation, D-573, 1975.