| 唐庆云,李锴.丁腈橡胶密封圈高温老化行为——自由状态和承压状态[J].装备环境工程,2017,14(12):93-96. TANG Qing-yun,LI Kai.Aging Behavior of NBR Seals under High Temperature—Free-state and Pressured-state[J].Equipment Environmental Engineering,2017,14(12):93-96. |
| 丁腈橡胶密封圈高温老化行为——自由状态和承压状态 |
| Aging Behavior of NBR Seals under High Temperature—Free-state and Pressured-state |
| 投稿时间：2017-08-14 修订日期：2017-12-15 |
| DOI：10.7643/ issn.1672-9242.2017.12.018 |
| 中文关键词: 橡胶密封圈 应力老化 高温 机械应力 |
| 英文关键词:rubber seal stress aging high temperature mechanical stress |
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| Author | Institution |
| TANG Qing-yun | 1.CEPREI, Guangzhou 510610, China; 2.Guangdong Provincial Key Laboratory of Electronic Information Products Reliability Technology, Guangzhou 510610, China; 3.Guangdong Provincial Research Center of Electronic Information Products Reliability and Environment Engineering Technology, Guangzhou 510610, China |
| LI Kai | 1.CEPREI, Guangzhou 510610, China; 2.Guangdong Provincial Key Laboratory of Electronic Information Products Reliability Technology, Guangzhou 510610, China; 3.Guangdong Provincial Research Center of Electronic Information Products Reliability and Environment Engineering Technology, Guangzhou 510610, China |
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| 中文摘要: |
| 目的 研究丁腈橡胶密封圈自由状态和承压状态下的高温老化行为。方法 以拉伸强度和拉断伸长率为参数，对各温度下的老化行为进行表征和分析。结果 70 ℃条件下机械应力大大加快了橡胶密封件拉伸强度的下降速率，以致试验64 d时拉伸强度甚至比110 ℃时还低，拉断伸长率的下降速率也明显加快了；90 ℃加速条件下机械应力对拉伸强度的下降有一定的促进作用，但对拉断伸长率的变化基本无影响；110 ℃加速条件下机械应力对拉伸强度和拉断伸长率均没有明显的影响。结论 机械应力在较低温度下可以显著促进丁腈橡胶密封圈热氧老化，高温条件下促进作用不明显。 |
| 英文摘要: |
| Objective To research high temperature aging behaviors of nitrile rubber sealing ring in free state and pressure bearing state. Methods With the tensile strength and tensile elongation as parameters, aging behaviors at each temperature were characterized and analyzed. Results At 70 ℃, the mechanical stress sped up the tensile strength declining rate of rubber seal so greatly that the tensile strength tested in the 64th day was lower than that at 110 ℃. The tensile elongation also significantly accelerated the decline rate; at 90 ℃, under the condition of accelerating, the mechanical stress had a certain role in promoting the tensile strength and tensile elongation, but basically had no influence on the variation of tensile elongation; at 110 ℃, under the condition of accelerating, the mechanical stress had no obvious impact on the tensile strength and tensile elongation Conclusion Mechanical stress at low temperature can significantly promote the hot oxygen aging of nitrile rubber sealing ring. Its promoting effect is not obvious at high temperature. |
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