聚氨酯有机涂层在使用过程中,会受到自然界中各种因素的作用而发生老化.其中,太阳光和水是导致涂层老化的最主要的环境因素之一.本文分别采用氙弧灯和荧光紫外灯循环加速光老化来模拟太阳光及水环境,研究涂层的老化规律和降解机理.对比涂层老化前后光泽、色差等外观性能的变化,并用ATR-FTIR(全反射-傅里叶红外光谱)研究涂层表面树脂面漆体系特征官能团的变化情况,结果表明涂层在不同的光老化条件下的老化历程和老化产物不同.
Many environmental factors will affect on the properties of organic coatings,sun light and water are the main two destroying factors. In this article,xenon lamp and UV irradiation circulate aging equipments were used to simulate the two effect factors and to carry out accelerated light aging of the coatings. The aging regulation and deg-radation mechanism were studied. Its gloss loss rate and color difference were tested. The variety of functional group was researched by ATR-FTIR ( attenuated total reflection-Fourier transform infrared spectrum ) . The results showed that the coating has different degradation process under two aging mode.
参考文献
| [1] | 徐永祥;严川伟;丁杰;高延敏;曹楚南.紫外光对涂层的老化作用[J].中国腐蚀与防护学报,2004(3):168-173. |
| [2] | 尚建丽;王健.紫外光对外饰面涂层老化的试验研究[J].西安建筑科技大学学报（自然科学版）,2010(5):741-744. |
| [3] | 闫永生 .不同光源条件下PVC涂层膜材料光氧老化性能研究[D].东华大学,2012. |
| [4] | 郑天亮;张华;王轩;王月红;张璋.用EIS法研究丙烯酸聚氨酯涂层的光老化性能[J].航空学报,2007(3):714-718. |
| [5] | 卢琳,胡建文,李晓刚,高瑾.光老化对丙烯酸聚氨酯涂层/钢板界面附着力的影响[C].第五届全国腐蚀大会论文集,2009:1-9. |
| [6] | 王玲;高瑾;李晓刚;胡建文.光辐射对丙烯酸聚氨酯涂层防腐保护性能的影响[J].北京科技大学学报,2008(2):152-155. |
| [7] | Perrin FX.;Aragon E.;Vernet JL.;Irigoyen M..Artificial aging of acrylurethane and alkyd paints: a micro-ATR spectroscopic study[J].Polymer Degradation and Stability,20003(3):469-475. |
| [8] | 胡建文;李晓刚;高瑾.光老化丙烯酸聚氨酯涂层防护性能的电化学表征[J].腐蚀与防护,2009(4):211-214. |
| [9] | 杨丽霞;李晓刚;张三平.丙烯酸聚氨酯涂层在我国典型大气环境下的老化历程[J].环境技术,2006(6):19-22,25. |
| [10] | 胡建文;高瑾;李晓刚;杜翠女.紫外光对丙烯酸聚氨酯清漆的老化影响规律研究[J].中国腐蚀与防护学报,2009(5):371-375. |
| [11] | 耿舒;高瑾;李晓刚;赵泉林.丙烯酸聚氨酯涂层的紫外老化行为[J].北京科技大学学报,2009(6):752-757. |
| [12] | Merlatti C;Perrin FX;Aragon E;Margaillan A.Natural and artificial weathering characteristics of stabilized acrylic-urethane paints[J].Polymer Degradation and Stability,20085(5):896-903. |
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