摘要
在武汉地区对两种不同氟含量的氟碳树脂涂层进行户外曝晒试验,并对曝晒1a后的试样进行盐雾试验,使用红外吸收光谱法检测涂层的特征基团变化,用常规方法检测光泽度及结合强度。同时,通过对结合强度变化数据的拟合,分析了氟碳涂层中含氟分子链降解及结构变化的规律。结果表明,相同曝晒时间下,含氟量低的氟碳涂层老化较含氟量高的严重,且含氟量低的氟碳涂层的耐蚀性能和结合强度随曝晒时间下降较快。
Two types of fluorocarbon (FC) resin coatings with different fluorine content were used for outdoor insolating test in the urban area of Wuhan city. The coating samples subject to 1-year insolating test were then used for salt-fog test. The coating samples after the insolating and salt-spray tests were analyzed using infrared spectroscopy so as to explore the changes of the characteristic groups in the coatings. The luster and bonding strength of the coating samples were evaluated using conventional methods, while the degradation of the F-containing chain and structural changes of the coatings were analyzed based on numerical simulation of the bonding strength. It was found that on the condition of fixed same insolating duration, the FC coating of a smaller F content was more liable to aging. Moreover, the corrosion resistance and bonding strength of the FC coating with a smaller F content decreased with increasing insolating duration more rapidly as compared with that of the coating with a higher F content.
出处
《材料保护》
CAS
CSCD
北大核心
2006年第10期19-22,2,共4页
Materials Protection
基金
由国家自然科学基金资助(50499331)
关键词
氟碳涂层
户外曝晒
老化差异性
耐腐蚀性能
结合强度
fluorocarbon coating
outdoor insolating
aging behavior
corrosion resistance
bonding strength
