KH570改性SiO2复合耐腐蚀涂层结构及性能

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材料工程 ›› 2010, Vol. 0 ›› Issue (12) : 72-76.

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KH570改性SiO₂复合耐腐蚀涂层结构及性能

丁新更, 陈远, 吴春春, 杨辉

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Hydrolyze-polymerization Process and Anti-corrosion Property of KH570-SiO₂ Composite Sol

DING Xin-geng, CHEN Yuan, WU Chun-chun, YANG Hui

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摘要

采用溶胶-凝胶法,以γ-甲基丙烯酰氧丙基三甲氧基硅烷(KH570)改性正硅酸乙酯(TEOS)水解聚合物,在钢片上制备有机-无机复合防腐薄膜.通过傅里叶红外光谱(FTIR)、扫描电镜(SEM)等测试手段研究薄膜材料的结构,并通过盐雾腐蚀试验和电化学阻抗谱测试对复合薄膜的防腐蚀性能进行检测,并探讨了最适加水量(R).结果表明:随R从1增加至5,涂层防腐性能先提高后降低.R=3时,薄膜结构致密,抗腐蚀性能最好;FTIR结果表明,样品经180℃热处理后,KH570的结构无明显变化.

Abstract

Using sol-gel method,γ-methacryloxypropyltrimethoxysilane(KH570)-modified tetraethylorthosilicate(TEOS) as precursor,the poly-organic-inorganic anti-corrosion coating on steel plate was prepared.The structure of the coating was studied by Fourier transform infrared spectroscopy(FTIR) and scanning electronic microscopy(SEM).The anti-corrosion property of the coating was measured by salt-spray test and electrochemical impedance spectroscopy assay.The effect of water addition was investigated.The results showed that as the water addition(R) increased from 1 to 5,the anti-corrosion performance firstly enhanced and then declined.When R=3,the coating was compact in structure,and had the optimal anti-corrosion property.The FTIR study revealed that the structure of KH570 had no significant change after heat treatment at 180℃.

导出引用

丁新更, 陈远, 吴春春, 杨辉. KH570改性SiO₂复合耐腐蚀涂层结构及性能[J]. 材料工程, 2010, 0(12): 72-76

DING Xin-geng, CHEN Yuan, WU Chun-chun, YANG Hui . Hydrolyze-polymerization Process and Anti-corrosion Property of KH570-SiO₂ Composite Sol[J]. Journal of Materials Engineering, 2010, 0(12): 72-76

中图分类号： TB332

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