| 崔昕晔,周源,常建.某型橡胶密封圈老化加速试验及寿命预测[J].装备环境工程,2024,21(10):87-93. CUI Xinye,ZHOU Yuan,CHANG Jian.Accelerated Aging Test and Life Prediction of a Certain Type of Rubber Seals[J].Equipment Environmental Engineering,2024,21(10):87-93. |
| 某型橡胶密封圈老化加速试验及寿命预测 |
| Accelerated Aging Test and Life Prediction of a Certain Type of Rubber Seals |
| 投稿时间：2024-04-26 修订日期：2024-07-10 |
| DOI：10.7643/issn.1672-9242.2024.10.011 |
| 中文关键词: 硅橡胶 O型密封圈 贮存寿命 老化试验 阿伦尼斯模型 湿热老化 评估方法中图分类号:V255.3 文献标志码:A 文章编号:1672-9242(2024)10-0087-07 |
| 英文关键词:silicone rubber O-ring storage life aging test Arrhenius model damp-heat aging evaluation method |
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| 中文摘要: |
| 目的 通过开展高温老化试验及湿热老化试验，对某型硅橡胶O形密封圈的老化规律和贮存寿命进行探究，并创新性地将2类试验进行对比分析，进而更直观地分析不同应力因素对老化行为的影响以及不同模型的适用性。方法 分别以温度单一应力和湿度双重应力为主要老化因素设计加速老化试验，以永久压缩变形率为退化数据求出不同应力下的橡胶性能退化模型，将2类老化试验分别与阿伦尼斯模型以及湿热模型相结合来预测密封圈的贮存寿命，并进一步探究单一应力和双重应力对老化过程具体影响，最后评估不同理论模型的适用性。结果 求出了各应力下橡胶性能退化模型并预估出对应的密封圈贮存寿命，初步探究了温度、湿度及其综合作用对老化及贮存寿命的影响，分析了不同理论模型在实际应用中的准确性和适用性。结论 通过两大类老化试验，对该型橡胶的贮存寿命作出了13.5和13.9年的预估，并得到温、湿度对橡胶老化影响较大，两者综合作用是非线性的结论。同时也分析出考虑湿热因素的模型更适合预测橡胶密封圈的老化寿命。 |
| 英文摘要: |
| The work aims to investigate the aging law and storage life of a certain type of silicone rubber O-ring by carrying out the high-temperature aging test and the humidity-heat aging test and innovatively compare and explore the two tests to intuitively analyze the effects of different stresses on the aging behavior and the applicability of different models. The single temperature stress and double humidity stress were used as the main aging factors to design the corresponding accelerated aging tests, and the permanent compression deformation rate was used as the degradation data to obtain the degradation model of rubber properties under different stresses, and the two types of aging tests were combined with the Arrhenius model and the hygrothermal model respectively to predict the storage life of the corresponding seals. The effects of single stress and double stress on aging process were further investigated and the applicability of different theoretical models was evaluated. The degradation model of rubber properties under various stresses was obtained and the corresponding storage life of seals was predicted. The effects of temperature, humidity and their comprehensive effects on aging and storage life were initially explored, and the accuracy and applicability of different theoretical models in practical application were analyzed. Through two types of aging tests, the storage life the rubber is estimated to be 13.5 and 13.9 years, and it is concluded that temperature and humidity have great effect on rubber aging, and the comprehensive effect of them is nonlinear. At the same time, it is also analyzed that the model considering humidity and heat factors is more suitable for predicting the aging life of rubber seals. |
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