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| Prediction of Environmental Storage Life of Ethyene-propylene Rubber Tropical Rainforest |
| Received:March 28, 2019 Revised:April 08, 2019 |
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| DOI：10.7643/issn.1672-9242.2019.08.019 |
| KeyWord:tropical rainforest storage life compression set forecast |
| Author | Institution |
| WANG Da-wei |
AVIC Chengdu Aircraft Industrial Group Co., Ltd, Chengdu , China |
| LI Chao |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| WANG Hui |
Southwest Technology and Engineering Research Institute, Chongqing , China |
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| Abstract: |
| Objective To predict the ethylene-propylene rubber (EPR) storage life under tropical rainforest environment in china. Methods The mechanical and compression set of ethylene-propylene rubber in free state and under stress state during storage in Xishuangbanna test station were regularly tested. Compression set showed obvious change trend during storage. It was reasonable to use the retention rate of compression set as the life prediction index of ethylene-propylene tropical rainforest during storage. Results In actual storage and use of rubber materials, the relationship between the performance change index and aging time conformed to the power function. EPR performance change rate constant and aging test constant were obtained by processing the retention rate data of compression set. The characteristic constant of aging was determined by dichotomy method, and the aging life equation of EPR under storage stress in Xishuangbanna environmental storage was established. Conclusion Through the regression effect test, the aging life equation has significant regression effect. Further error analysis shows that the established life equation has high reliability and can be used to predict the performance change of EPR in Xishuangbanna. |
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