| 橡胶O形密封圈的加速老化法寿命预估 |
| Life Prediction of Rubber O-shaped Sealing Ring with Accelerated Aging Method |
| 投稿时间：2023-05-25 修订日期：2023-05-25 |
| DOI：10.12136/j.issn.1000-890X.2025.01.0066 |
| 中文关键词: 丁腈橡胶 O形密封圈 压缩应力松弛性能保持率 加速老化法 寿命 |
| 英文关键词: NBR O-shaped sealing ring compression stress relaxation performance retention rate accelerated aging method life |
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| 中文摘要: |
| 以丁腈橡胶O形橡胶密封圈（简称橡胶O形圈）为例，提出加速老化法预估橡胶O形圈的寿命的一种新方法。以压缩应力松弛性能保持率为预估指标，分别在80，100，110和120 ℃下对橡胶O形圈进行压缩应力松弛试验，先推算出橡胶O形圈贮存3，5，10，15和20年的压缩应力松弛性能保持率，再推算出在80和100 ℃下橡胶O形圈贮存3，5，10，15和20年所需的加速老化时间。 |
| 英文摘要: |
| As nitrile rubber O-shaped sealing ring（referred to as rubber O-shaped ring） as example，a new method of accelerated aging for predicting the life of the rubber sealing ring was proposed.Using the compression stress relaxation performance retention rate as the index for predicting the storage life，the compression stress relaxation tests of the rubber O-shaped ring were conducted at 80，100，110 and 120 ℃，respectively.First，the compression stress relaxation retention rates of the rubber O-shaped ring stored for 3，5，10，15 and 20 years were calculated，and then the acceleration aging time required for the rubber O-shaped ring stored for 3，5，10，15 and 20 years at 80 and 100 ℃ were calculated. |
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