Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Effect of Co-agent on Cure, Mechanical Properties of NBR Compounds in Peroxide System

  • Seo, Eun Ho (School of Applied Chemical Engineering, Kyungpook National University) ;
  • Kim, Gi Hong (School of Applied Chemical Engineering, Kyungpook National University) ;
  • Kim, Do Young (School of Applied Chemical Engineering, Kyungpook National University) ;
  • Lee, Dong Won (Research & Development Institute, PolyChem Korea Co., LTD) ;
  • Seo, Kwan Ho (School of Applied Chemical Engineering, Kyungpook National University)
  • Received : 2017.08.28
  • Accepted : 2017.09.19
  • Published : 2017.09.30
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Abstract

In this study, the effect of the cure, mechanical properties, and oil resistance of NBR (acrylonitrile-butadiene rubber)/peroxide compounds were investigated for various co-agents. NBR compounds were characterized using a swelling test, a rheometer (MDR), and a compression set test. Mechanical properties were tested with original compounds, heated in air and exposed to the ASTM No.1, IRM 903 oil. NBR compounds were prepared using peroxide as the crosslinking agent. Trimethylolpropane trimethacrylate (TMPTMA), triallyl isocyanurate (TAIC), and 1,2-polybutadiene (HVPBD) were used as co-agents. The NBR compounds containing TMPTMA and HVPBD lowered the scorch time, while the addition of TAIC did not significantly change the scorch time. NBR compounds containing TMPTMA increased the crosslinking density, while the addition of TAIC and HVPBD lowered the crosslinking density. Moreover, the addition of TMPTMA improved the oil resistance of the NBR compound.

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References

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