| 罗来正,肖勇,苏艳,张燕,黎小锋,冯利军,王晓辉.东南沿海气候条件对聚氨酯涂层老化行为影响研究[J].装备环境工程,2015,12(6):42-47. LUO Lai-zheng,XIAO Yong,SU Yan,ZHANG Yan,LI Xiao-feng,FENG Li-jun,WANG Xiao-hui.Effects of Southeast Coastal Atmospheric Environment on Aging Behavior of Polyurethane Coating[J].Equipment Environmental Engineering,2015,12(6):42-47. |
| 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. |
