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| Accelerated Aging Performance of FX-4 and FX-17 Typical Rubber Seals |
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| DOI：10.7643/issn.1672-9242.2023.05.005 |
| KeyWord:typical rubber seal FX-4 FX-17 accelerated aging performance tensile strength compression permanent deformation |
| Author | Institution |
| LI Jian |
Army Aviation Research Institute, Beijing , China |
| SIMA Yi-zhi |
Army Aviation College, Beijing , China |
| WU Yun-zhang |
Army Aviation Research Institute, Beijing , China |
| WANG Li-ping |
Army Aviation Research Institute, Beijing , China |
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| Abstract: |
| The work aims to study the accelerated aging performance of FX-4 and FX-17 typical rubber seals. During initial compression rates of 14% and 20% and different duration of accelerated aging at five temperature points, four performance parameters of FX-4 and FX-17 rubber sealing rings, including tensile strength, elongation at break, hardness, and compression permanent deformation, were tested, analyzed and compared. The hardness index did not change significantly with aging temperature and aging time. After aging test at 200 ℃, both tensile strength and elongation at break showed an obvious downward trend, however there was no obvious change in tensile strength and elongation at break after aging for 10 and 70 days at the same temperature. The change of compression permanent deformation rate with aging temperature and aging time was not obvious at low aging temperature point. After aging at 150 ℃ and 200 ℃, the compression permanent deformation rate increased with the aging time. The compression permanent deformation rate of FX-4 and FX-17 rubber sealing rings is not significantly affected by temperature at low aging temperature points, but shows an upward trend with the increase of aging time at the same temperature. At high aging temperature points, the compression permanent deformation rate shows an upward trend with the increase of aging time. |
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