Effects of Temperature on Hardness of Rubber Materials with Different Curing System

가교시스템이 다른 고무재료의 경도에 대한 온도의 영향

  • Jin, Hyun-Ho (Department of Advanced Chemicals, Chonnam National University) ;
  • Hong, Chang-Kook (Center for Functional Nano Fine Chemicals (BK21)) ;
  • Cho, Dong-Lyun (School of Applied Chemical Engineering, Chonnam National University) ;
  • Kaang, Shin-Young (School of Applied Chemical Engineering, Chonnam National University)
  • 진현호 (전남대학교 신화학소재공학과) ;
  • 홍창국 (기능성 나노 신화학소재 사업단(BK21)) ;
  • 조동련 (전남대학교 응용화학공학부) ;
  • 강신영 (전남대학교 응용화학공학부)
  • Published : 2008.12.31

Abstract

In this study, the effects of curing system on the hardness of rubber materials at various temperature were investigated. NR and SBR were compounded with various sulfur or peroxide content, in order to obtain various crosslink densities. The changes of hardness and crosslink density were measured as a function of temperature and the relationship was examined. The thermal stresses were also measured in order to investigate the effect of entropy as a function of temperature. The hardness of NR and SBR compounds increased with increasing temperature above room temperature, and the measured thermal stress increased as temperature increased. However, the crosslink densities were not changed by temperature change.

References

  1. J. A. Shaw, A. S. Jones, and A. S. William, "Chemorheological Response of Elastomers at Elevated Temperature: Experiment and Simulations", J. Mech. Phys. Solids, 53, 2758 (2005) https://doi.org/10.1016/j.jmps.2005.07.004
  2. C. K. Hong, S. Park, and S. Kaang, "A Test Method for Measuring the Dimensional Stability of Elastomeric Materials upon Heating", Polymer Testing, 27, 146 (2008) https://doi.org/10.1016/j.polymertesting.2007.08.008
  3. 박상민, 홍창국, 조동련, 강신영, "충진된 고무재 료의 열변화에 따른 수축력/팽창력 측정", Elastomer, 42, 201 (2007)
  4. A. K. Sircar, "Thermal Characterization of Polymeric Materials", ed. by E. A. Turi, 2nd ed., Academic Press, New York, 1997
  5. A. N. Gent, "On the Relation between Indentation Hardness and Young's modulus", IRI, 34, 46-57 (1958)
  6. D. J. Hitt and M. Gilbert, "Dimensional Stability of Oriented, Rigid Poly(vinyl chloride)", J. Appl. Polym. Sci., 89, 3859 (2003) https://doi.org/10.1002/app.12576
  7. A. N. Gent, "Elasticity" in "Engineering with Rubber: How to Design Rubber Components", ed. by A. N. Gent, p. 444, Hanser Publishers, New York, 1992
  8. Sung-Seen Choi, "Influence of internal strain on change of crosslink density of natural rubber vulcanizates by thermal ageing", Polym. Int., 50, 107-112 (2001) https://doi.org/10.1002/1097-0126(200101)50:1<107::AID-PI593>3.0.CO;2-Z
  9. S. K. Bhatnagar, S. Banerjee, "Cross-link Efficiency of Styrene-Butadiene Rubber with Dicumyl Peroxide and Evaluation of Interaction Parameter", Die Makromolekulare Chemie, 109, 217-230 (1967) https://doi.org/10.1002/macp.1967.021090119
  10. J. I. Cunnenn and R. M. Russell, "Occurrence and Prevention of Changes in the Chemical Structure of Natural Rubber Tire Tread Vulcanizates during Service", Journal of Rubber Research Institute, 22, 300 (1969)
  11. P. J. Flory and J. Rehner, Jr. "Statistical Mechanics of Cross-Linked Polymer Networks II. Swelling", J. Chem. Phys. 11, 521 (1943) https://doi.org/10.1063/1.1723792
  12. Sung-Hyo Chough and Dong-Ho Chang, "Kinetics of Sulfur Vulcanization of NR, BR, SBR, and Their Blends Using a Rheometer and DSC", J. Appl. Polym. Sci., 61, 449-454 (1996) https://doi.org/10.1002/(SICI)1097-4628(19960718)61:3<449::AID-APP7>3.0.CO;2-I
  13. I. Franta, "Elastomers and Rubber Compounding Materials", Elsevier, NY, 1989
  14. C. K. Hong, S. Park, and S. Kaang, "A test method for measuring the dimensional stability of elastomeric materials upon heating", Polymer Testing, 27, 146-152 (2008) https://doi.org/10.1016/j.polymertesting.2007.08.008