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| Effects of Southeast Coastal Atmospheric Environment on Aging Behavior of Polyurethane Coating |
| Received:July 04, 2015 Revised:December 15, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2015.06.007 |
| KeyWord:polyurethane coating marine atmospheric environment photodegradation water degradation |
| Author | Institution |
| LUO Lai-zheng |
Southwest Research Institute of Technology and Engineering， Chongqing ， China |
| XIAO Yong |
Southwest Research Institute of Technology and Engineering， Chongqing ， China |
| SU Yan |
Southwest Research Institute of Technology and Engineering， Chongqing ， China |
| ZHANG Yan |
Southwest Research Institute of Technology and Engineering， Chongqing ， China |
| LI Xiao-feng |
Chongqing Qijiang Experimental High School， Chongqing ， China |
| FENG Li-jun |
Southwest Research Institute of Technology and Engineering， Chongqing ， China |
| WANG Xiao-hui |
Southwest Research Institute of Technology and Engineering， Chongqing ， China |
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| Abstract: |
| Objective To investigate the influence of southeastern coastal atmospheric environment, which was hot, humid, salty, with high radiation, on the aging behavior of polyurethane coating. Methods Marine atmospheric exposure test of polyurethane coating was carried out in Wanning, Hainan. The aging characteristics and causes were analyzed from the appearance rating, gloss, color, adhesion, and infrared spectra. Results The coating resin fractured and main functional groups disappeared after marine atmospheric exposure test of polyurethane coating for four years. Conclusion Photodegradation by ultraviolet radiation together with degradation by water in marine atmosphere caused macroscopic and microscopic defects of the coating such as loss of light, color, pulverization and decrease of adhesion. |
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