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| Laboratory Accelerated Aging Behavior of CF8611/AC531 Composite |
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| DOI：10.7643/issn.1672-9242.2020.05.019 |
| KeyWord:composite accelerated aging behavior wet-heat effect photooxidation aging |
| Author | Institution |
| ZHANG Yong |
Qingdao Campus of Naval Aviation University, Qingdao Shandong , China |
| WANG An-dong |
Qingdao Campus of Naval Aviation University, Qingdao Shandong , China |
| CHEN Yue-liang |
Qingdao Campus of Naval Aviation University, Qingdao Shandong , China |
| FAN Wei-jie |
Qingdao Campus of Naval Aviation University, Qingdao Shandong , China |
| MA Rui-min |
Qingdao Campus of Naval Aviation University, Qingdao Shandong , China |
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| Abstract: |
| The paper aims to obtain the law of the aging behavior of CFRP and study the influence of environmental factors such as ultraviolet radiation, temperature and humidity. Based on the principle of equivalent damage of wet-heat effect and photooxidation aging, the method of compiling accelerated aging environmental spectrum in laboratory was determined; CF8611/AC531 composite was taken as the study object, and the accelerated aging test was carried out according to the determined accelerated aging test scheme. The micro-morphology was observed and the open-circuit potential and potentiodynamic polarization curves were measured. Before aging, there were no cracks on the surface of CFRP, and the carbon fiber/resin interface bonded well. After aging, cracks and holes appeared in the resin matrix, and the interface was destroyed at the same time. The polarization curve moved downward to the right with the increase of aging time. The self-corrosion potential decreased slightly by 0.0326 V. The self-corrosion current density increased by nearly 1621 times. Accelerated aging results in the increasing exposed area of carbon fibers on the surface. The longer the time, the more obvious the damage effect. It is necessary to prevent it from coming into direct contact with metals in practical use. |
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