|
| Aging Behavior of NBR Seals under High Temperature—Free-state and Pressured-state |
| Received:August 14, 2017 Revised:December 15, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2017.12.018 |
| KeyWord:rubber seal stress aging high temperature mechanical stress |
| Author | Institution |
| TANG Qing-yun |
1.CEPREI, Guangzhou , China; 2.Guangdong Provincial Key Laboratory of Electronic Information Products Reliability Technology, Guangzhou , China; 3.Guangdong Provincial Research Center of Electronic Information Products Reliability and Environment Engineering Technology, Guangzhou , China |
| LI Kai |
1.CEPREI, Guangzhou , China; 2.Guangdong Provincial Key Laboratory of Electronic Information Products Reliability Technology, Guangzhou , China; 3.Guangdong Provincial Research Center of Electronic Information Products Reliability and Environment Engineering Technology, Guangzhou , China |
|
| Hits: |
| Download times: |
| Abstract: |
| 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. |
| Close |
|
|
|