| 王辉,宣卫芳,刘静,赵方超.飞机蒙皮用含氟聚氨酯涂层老化原因分析[J].装备环境工程,2011,8(5):43-46. WANG Hui,XUAN Wei-fang,LIU Jing,ZHAO Fang-chao.Weathering Analysis of Fluorine Containing Polyurethane Coating for Aircraft Skin[J].Equipment Environmental Engineering,2011,8(5):43-46. |
| Fluorinated polyurethane coating system commonly applied in aircraft skin was selected as the research object. Laboratory accelerated test of fluorinated polyurethane coatings was carried out according to the main features of environmental factors in service area. The tested coatings were characterized by means of EIS after test. Results showed that UVA effects only on of the coating surface structure; the coating resistance drops slowly after UV test. In UV-salt spray cyclic test, the coating surface structure changes under UVA, water resistance of coatings become worse, and water permeates into the interior of coating faster, then coating internal structure changes, the coating resistance drops more rapidly after cyclic test. The main reason for organic coating of aircraft skin appearing serious aging is comprehensive effect of UV and dew. |
