한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제23권1호
  • /
  • Pages.46-51
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  • 2019
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  • 1226-6027(pISSN)
  • /
  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
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간헐 압축응력완화 시험법과 시간-온도 중첩 이론을 이용한 NBR 오링의 노화 거동 분석 연구

Study on the Degradaion Behavior of Acrylonitrile Rubber(NBR) O-ring by Intermittent CSR and Time-Temperature Superposition Principle

  • Lee, Jin Hyok (Rubber Research Division, Korea Institute of Footwear & Leather Technology) ;
  • Bae, Jong Woo (Rubber Research Division, Korea Institute of Footwear & Leather Technology) ;
  • Choi, Myung Chan (Rubber Research Division, Korea Institute of Footwear & Leather Technology) ;
  • Yun, Yu Mi (Rubber Research Division, Korea Institute of Footwear & Leather Technology) ;
  • Kim, Wonho (Department of Polymer Science and Chemical Engineering, Pusan National University) ;
  • Park, Sung Han (Agency for Defense Development) ;
  • Jo, Nam-Ju (Department of Polymer Engineering, Pusan National University)
  • 투고 : 2018.06.17
  • 심사 : 2018.12.02
  • 발행 : 2019.02.01
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초록

Intermittent CSR 측정법을 이용하여 NBR 오링의 노화 거동과 수명 예측에 관하여 연구하였다. Intermittent CSR jig는 오링의 실제 사용 환경을 고려하여 설계 제작하였다. 오링의 노화 거동은 $40{\sim}120^{\circ}C$에서의 가속 노화 연구를 통하여 관찰하였다. 오링은 $80^{\circ}C$ 이하에서 비선형 노화 거동을 나타내었다. 오링의 수명은 고장 조건 20%에 대하여 Arrhenius plot으로부터 32.5년, WLF plot으로 부터 22.6년으로 나타났다.

Intermittent CSR testing was used to investigate the degradation of a NBR O-ring, and also the prediction of its life-time. An intermittent CSR jig was designed taking into consideration the O-ring's environment under use. Degradation of O-rings by thermal aging was observed between $40^{\circ}C$ and $120^{\circ}C$. O-rings showed non-linear degradation behavior under $80^{\circ}C$. At 20% of failure condition, predicted life-times were 32.5 years by Arrhenius plot and 22.6 years by WLF plot.

키워드

참고문헌

  1. ISO 11346, "Rubber, vulcanized or thermopl astic - Estimation of life-time and maximum temperature of use", 2004.
  2. K.T. Gillen, "Non-Arrhenius behavior for oxidative degradation of chlorosulfuonated polyethylene materials", Polymer Degradation and Stability, Vol. 87, pp. 335-346, 2005. https://doi.org/10.1016/j.polymdegradstab.2004.09.004
  3. K.T. Gillen, "Validation of improved methods for predicting long-term elastomeric seal lifetimes from compression stress-relaxation", Polymer Degradation and Stability, Vol. 82, pp. 25-35, 2003. https://doi.org/10.1016/S0141-3910(03)00159-9
  4. P. Tuckner, "Compression, Compression stress relaxation test comparisons and development", SAE Technical report 2000-01-0752, 2001.
  5. P. Tuckner, "Compression stress relaxation testing - comparisons, methods, and correlations", SAE Technical report 2001-01-0742, 2001.
  6. S. Ronan, T. Alshuth, S. Jerrams and N. Murphy, "Long-term stress relaxation prediction for elastomers using the time-temperature superposition method", Materials & Design, Vol. 28, pp. 1513-1523, 2007. https://doi.org/10.1016/j.matdes.2006.03.009
  7. R. W. Ogden and D. G. Roxburgh, "A pseudo-elastic model for the Mullins effect in filled rubber", Proceedings: Mathematical, Physical and Engineering Sciences, Vol. 455, pp. 2861-2877, 1999. https://doi.org/10.1098/rspa.1999.0431
  8. M. Celina, K.T. Gillen, and R.A. Assink, "Accelerated aging and lifetime prediction : Review of non-Arrhenius behavior due to two competing processes", Polymer Degradation and Stability, Vol. 90, Issue. 3, pp. 395-404, 2005. https://doi.org/10.1016/j.polymdegradstab.2005.05.004