摘要
通过化学氧化法合成盐酸及高氯酸掺杂的聚苯胺,利用傅里叶红外光谱(FTIR)和扫描电镜(SEM)分别表征其结构和形貌。以环氧树脂为成膜物质,在Q235碳钢基体上制备了聚苯胺/环氧复合涂层,利用阻抗(EIS)和塔菲尔(Tafel)极化曲线等方法研究涂层在3.5%NaCl溶液中的防腐蚀性能。结果表明,与纯环氧涂层相比,聚苯胺的加入改善了环氧的防腐蚀性能,而高氯酸掺杂的聚苯胺显示了更好的防腐蚀性能。
Polyaniline （PANI） was prepared by direct mixed oxidation in two inorganic acids （perchloric acid and hydrochloric acid）. Structural characteristics and morphology of PANI products were characterized by fourier transform infrared spectroscopy （FTIR） and scanning electron microscopy （SEM） respectively. Then composite coatings of epoxy resin with PANI were prepared on Q235 steel substrate. The corrosion performance of Q235 steel with different composite coatings in 3.5 mass% sodium chloride （NaC1） aqueous solution were studied by electrochemical impendance spectroscopy （EIS） technique and Tafel polarization measurement. The results indicated that the presence of PANI could enhance the anticorrosive performance of the modified epoxy coatings in the contrast to pure epoxy coating, and the epoxy coating modified with the perchloric acid doped PANI exihibited the best performance of corrosion protection among the four modified coatings.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2013年第2期121-126,共6页
Corrosion Science and Protection Technology
基金
国家自然科学基金(21074144)
霍英东教育基金(12207)
钱江人才项目
宁波市国际合作项目(2010D10016)资助
关键词
聚苯胺
高氯酸
Q235碳钢
阻抗
防腐蚀
polyaniline, perchloric acid, Q235 steel, EIS, anticorrosion
