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| Experimental Study on Aging Performance of G105 Silicone Rubber |
| Received:May 11, 2024 Revised:July 09, 2024 |
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| DOI：10.7643/issn.1672-9242.2024.10.006 |
| KeyWord:solid rocket motor silicone rubber thermal oxygen aging pre-compression amount life prediction |
| Author | Institution |
| DAI Chao |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
| ZHENG Jian |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
| XU Jinsheng |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
| HUANG Wei |
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing , China |
| HE Hongbo |
Inner Mongolia Institute of Mechanical Power, Hohhot , China |
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| Abstract: |
| The work aims to establish a regression equation between aging characteristic index and aging time of rubber to predict the storage life of silicone rubber sealing components under different pre-compression amounts and investigate the effects of different pre-compression amounts and temperatures on the aging performance of silicone rubber sealing components. With different pre-compression amounts and temperaturesas variables, and permanent compression deformation as the aging characteristic index, thethermal oxygen aging test was carried out to silicone rubber specimens. According to the test data,a regression equation between aging reaction rate and temperature was established. The effect of different temperatures and pre-compression amounts on the aging reaction rate of the rubber was studied. The aging kinetics equations of permanent compression deformation and aging time were established, and the storage life of rubber under different test temperatures and pre-compression amounts was estimated.The aging dynamic equation for predicting the storage life of silicone rubber was established, and the storage life of silicone rubber under different pre-compression amounts was predicted.The pre-compression amount increased from 12% to 45%, and the storage life of silicone rubber sealing components decreased from 24.8 a to 14.2 a.The pre-compression amount has a significant impact on the aging performance of rubber. Therefore, a reasonable amount of pre-compression should be selected in practical use. |
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