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| Thermal Oxygen Aging Test and Life Evaluation of Silicone Rubber Seal Ring for a Certain Type of Equipment |
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| DOI：10.7643/issn.1672-9242.2022.06.008 |
| KeyWord:rubber seal ring thermal oxygen aging test life evaluation |
| Author | Institution |
| PU Ya-bo |
Southwest Technology and Engineering Research Institute, Chongqing , China;Key Laboratory of Ammunition Storage Environmental Effects, China South Industries Group Co., Ltd., Chongqing , China |
| WANG Yan-yan |
Southwest Technology and Engineering Research Institute, Chongqing , China;Key Laboratory of Ammunition Storage Environmental Effects, China South Industries Group Co., Ltd., Chongqing , China |
| LIU Wei |
Southwest Technology and Engineering Research Institute, Chongqing , China;Key Laboratory of Ammunition Storage Environmental Effects, China South Industries Group Co., Ltd., Chongqing , China |
| ZHAO Fang-chao |
Southwest Technology and Engineering Research Institute, Chongqing , China;Key Laboratory of Ammunition Storage Environmental Effects, China South Industries Group Co., Ltd., Chongqing , China |
| ZHOU Cai-yuan |
Southwest Technology and Engineering Research Institute, Chongqing , China;Key Laboratory of Ammunition Storage Environmental Effects, China South Industries Group Co., Ltd., Chongqing , China |
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| Abstract: |
| This paper is to study the performance degradation law of silicone rubber seal ring for a certain type of equipment under the influence of temperature and evaluate its service life.The thermal oxygen aging accelerated test method is adopted to simulate the radial pressure bearing state of the rubber seal ring during the test. The accelerated aging test of the silicone rubber seal ring is carried out at 90, 100, 110 and 120 ℃ by strengthening the temperature test conditions. The performance test data after the test are analyzed and processed with the compression permanent deformation rate as the parameter, combined with the Arrhenius model. Taking the compression permanent deformation rate of silicone rubber (radial pressure) seal ring as 10%, 20%, 30%, 40% and 50% respectively as the critical value index of seal ring failure, the service life of silicone rubber seal ring at 25 ℃ is extrapolated. After the accelerated aging test, the compression deformation rate of silicone rubber seal ring decreases gradually, and the higher the temperature is, the faster the compression deformation rate decreases; at the same time, the storage life of silicone rubber (radial pressure) seal ring with compression permanent deformation rate of 10%, 20%, 30%, 40% and 50% at 25 ℃ is 1, 2.9, 5.6, 9.1 and 13.8 years respectively.Temperature is one of the factors causing the performance degradation of silicone rubber seal ring; the test method and data processing method in this paper can effectively evaluate the service life of O-ring seal. |
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