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| Aging Mechanism of Rubber Seal Ring in Helicopter Main Reducer |
| Received:March 08, 2020 Revised:April 23, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.06.015 |
| KeyWord:helicopter of certain type main reducer rubber seal ring accelerated aging test aging mechanism |
| Author | Institution |
| LI Jian |
Army Aviation College, Beijing , China |
| WU Yun-zhang |
Army Aviation Research Institute, Beijing , China |
| SHI Jin-da |
Army Aviation Research Institute, Beijing , China |
| GAO Meng |
Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Material, Beijing , China |
| LI Chang-fan |
Army Aviation Research Institute, Beijing , China |
| WU Yong |
Army Aviation Research Institute, Beijing , China |
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| Abstract: |
| This paper aims to reveal the aging mechanism of a certain type helicopter main reducer’s rubber seal ring. According to the environment conditions of normal use and stock of helicopter main reducer’s rubber seal ring, the accelerated aging test method was adopted to simulate the aging process of the rubber sealing ring. Fourier Transform Infrared Spectroscopy (FTIR), X-ray photoelectron spectrometric (XPS) and thermogravimetric analysis (TG/TGA) were adopted to test the physical and chemical properties of the rubber sealing ring after the accelerated aging test. A rubber seal ring with 13 years’ inventory of main reducer and the rubber seal ring removed from the overhaul were tested. The polymer groups of FX-4 and FX-17 rubber sealing ring changed uniformly during accelerated aging test. The electron binding energy of F and O was almost unchanged. The chemical structure of the bonds in rubber does not change obviously. The temperature resistance of FX-17 is slightly better than that of FX-4. |
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