Accelerated Aging Test and Study of Storage Life Prediction of NBR O-Ring

Abstract:

Nitrile Butadiene Rubber (NBR) is a kind of common sealing materials for the electric hydraulic servo mechanism, there exists the aging failure problem in its storage environment, which is the key factor determining the storage life of the electric hydraulic servo mechanism. Through the analysis of aging failure mechanism of the NBR o-ring, the degradation path that varies with the changes of aging time based on compression set was established. And the Arrhenius equation, which is the acceleration equation of the aging reaction velocity varies with the changes of temperature, was established as well. In order to obtain the related parameters of the model, the accelerated aging test was conducted and its data were processed by applying the approximation standards and least square method. Also through the test the prediction of storage life of NBR o-ring under special storage conditions was made, and its predicted results were basically identical with the actual storage life.

• Periodical: Advanced Materials Research (Volumes 415-417)
• Pages: 184-190
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.415-417.184
• Online since: December 2011
• Authors: Jun Pan, Shi Wei Xu, Wen Hua Chen, Xiao Yun Wang, Ping Qian, Qun Wei Hu
• Keywords: Accelerated Aging, Compression Set, O-Ring, Storage Life

References

[1] Yajue Zhang:Structural Strength Study,2004(1):47-51,in Chinese.

[2] Beilong Zhang, Weiyong Deng, Hengxiang Lu, etal:Journal of Applied Polymer Science,2006,100 (5) :4114-4119.

[3] Yongjin Li. :China Rubber Industry,2002,49(10):615-622,in Chinese.

[4] Nikas,G.K: Proc.Inst.Mech.Eng.2003,217:365-373.

[5] Nikas G.K. Sayles: Tribol. Int .2004,37:651-660.

[6] Gillen KT, Bernstein R, Wilson MH: Polym Degrad Stab, 2005,87:257-270.

[7] Gillen KT, Celina M, Bernstein R: Polym Degrad Stab 2003;82:25.

[8] Guangdong Jiang: Aerospace Materials & Technology,1994,4:50-52,in Chinese.

[9] Liqun Zhu, Huijie Huang,Bo Zhao: Journal of Aeronautical Materials,2007, 27(3):69-73,in Chinese.

[10] Zheng Fu:The properties and design applications of Rubber material Chemical [M].Industry Press,2003.

[11] Yan Xiao, Borong Wei, Maoping Du: Synthetic Materials Aging and Application, 2007, 36(1): 40-43,in Chinese.

[12] Kuan Hu, Feng SongBi, Lin Zhang: Physical Testing and Chemical Analysis(Part A:Physical Testing),2008, 44(1):17-20,in Chinese.

[13] YongJin Li: China Rubber Industry,1996,43(9):515～516, in Chinese.