李赛,杨飞,李卫平,刘慧丛,朱立群,王贤明,宁亮.含氟丙烯酸聚氨酯涂层的环境失效行为研究[J].表面技术,2014,43(6):138-143.
LI Sai,YANG Fei,LI Wei-ping,LIU Hui-cong,ZHU Li-qun,WANG Xian-ming,NING Liang.Study on Failure Behavior of Fluorinated Polyurethane-acrylic Coatings[J].Surface Technology,2014,43(6):138-143 |
| 含氟丙烯酸聚氨酯涂层的环境失效行为研究 |
| Study on Failure Behavior of Fluorinated Polyurethane-acrylic Coatings |
| 投稿时间：2014-09-04 修订日期：2014-12-10 |
| DOI： |
| 中文关键词: 氟改性 疏水 丙烯酸聚氨酯 涂层 老化 失效机理 |
| 英文关键词:fluorinated hydrophobic acrylic polyurethane coatings aging failure mechanism |
| 基金项目: |
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| Author | Institution |
| LI Sai | Beihang University, Beijing 100191, China |
| YANG Fei | 1. Beihang University, Beijing 100191, China; 2. Wuhan Second Ship Design and Research Institute, Wuhan 430064, China; |
| LI Wei-ping | Beihang University, Beijing 100191, China |
| LIU Hui-cong | Beihang University, Beijing 100191, China |
| ZHU Li-qun | Beihang University, Beijing 100191, China |
| WANG Xian-ming | Marine Chemical Research Institute, Qingdao 266071, China |
| NING Liang | Marine Chemical Research Institute, Qingdao 266071, China |
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| 中文摘要: |
| 目的 研究含氟丙烯酸聚氨酯涂层作为船壳清漆,在光老化过程中疏水性能和防护性能的失效行为。 方法 通过接触角、傅里叶变换衰减全反射红外光谱(ATR-FTIR)、原子力显微镜(AFM)形貌,结合交流阻抗(EIS),研究涂层在室内外大气暴露环境、氙灯加速老化试验环境中的老化过程。 结果 光老化可以使涂层接触角显著降低,疏水性能下降。 ATR-FTIR 和 AFM 分析表明,光老化使涂层表面氟含量显著降低,氧含量升高,表面粗糙度增大。 与中性盐雾试验相比,氙灯加速老化试验中涂层电阻衰减速度更快。 结论 光老化过程中,涂层表面分子链断裂使涂层表面氟含量降低,疏水性下降,同时涂层电阻随老化时间延长而降低。 |
| 英文摘要: |
| Objective To investigate failure behaviors of fluorinated acrylic polyurethane coating in air environment and xenon accelerated aging test environment. Methods Water contact angle,attenuated total reflection-fourier transform infrared spectroscopy (ATR-FTIR),atomic force microscope(AFM) and Electrochemical Impedance Spectroscopy(EIS) were conducted to monitor the property variation of the coating. Results The results showed that coating contact angle decreased definitely in xenon accelerated aging test. ATR-FTIR spectra and AFM analysis indicated that the fluorine content decreased, while the oxygen content increased, and the coating surface roughness increased during the xenon lamp accelerated aging process. Coating resistance attenuated faster in xenon lamp accelerated aging test than in neutral salt spray test. Conclusion Photoaging began with a rupture of molecular chain, which led to a decrease of fluorine content, while coating resistance diminished along with time of aging. |
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