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| Correlation Analysis and the Aging Behaviors of Ethylene-propylene-diene Monomer in Xenon Lamp & Atmospheric Environments |
| Received:December 13, 2021 Revised:December 23, 2021 |
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| DOI：10.7643/issn.1672-9242.2022.04.021 |
| KeyWord:ethylene-propylene-diene monomer environment test xenon acceleration aging correlation kinetic model |
| Author | Institution |
| XIONG Jun |
Chengdu Aircraft Industrial Group Co., Ltd, Chengdu , China |
| WU De-quan |
Southwest Institute of Technology and Engineering, Chongqing, , China;Corrosion and Protection Center, University of Science and Technology Beijing, Beijing , China |
| SUN Mao-jun |
Southwest Institute of Technology and Engineering, Chongqing, , China |
| GAO Jin |
Corrosion and Protection Center, University of Science and Technology Beijing, Beijing , China |
| WANG Jin-mei |
Southwest Institute of Technology and Engineering, Chongqing, , China |
| YANG Xiao-kui |
Southwest Institute of Technology and Engineering, Chongqing, , China |
| ZHOU Kun |
Southwest Institute of Technology and Engineering, Chongqing, , China |
| ZHANG Lun-wu |
Southwest Institute of Technology and Engineering, Chongqing, , China |
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| Abstract: |
| To study the indoor and outdoor aging mechanism of EPDM, Ethylene-propylene-diene monomer (EPDM) was carried to outdoor atmospheric environments (Lhasa, Mohe, Turpan, Wanning and Wuhan) for outdoor nature atmosphere exposure tests and indoor xenon lamp accelerating aging test. The aging behaviors of EPDM including surface properties, mechanical properties and chemical structures were analyzed to evaluate the correlation between indoor and outdoor environment aging behaviors and acceleration ratio. The results showed that the aging rule of EPDM indoor and outdoor environment:glossiness reduced firstly and became stable later; chromatic aberration increased early and then decreased; the tensile strength and tear strength properties in Lhasa, Mohe and indoor environment raised fluctuantly and then decreased gradually; the carbonely groups were found in EPDM in Lhasa indoor environment test, while the hydroxy were not discovered there. The aging behaviors of EPDM from indoor environment were high correlated with Lhasa, whose relation coefficient was calculated as 0.92. Based on the first order dynamic equation and the light loss rate curve of EPDM, the acceleration ratios between indoor and Lhasa, Turpan, Wanning and Wuhan tests were calculated to be 43, 82, 45, 31 respectively. |
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