Study on Corrosion Resistant Properties of Nano-SiO2 Modified Epoxy Coating

被引：2

作者：

Wang, Xiaohong ^{[1
]}

Gao, Wei ^{[1
]}

Huang, Bensheng ^{[1
]}

Yang, Mei ^{[1
]}

Shi, Yijun ^{[1
]}

机构：

[1] Southwest Petr Univ, Coll Mat Sci & Engn, Chengdu 610500, Sichuan, Peoples R China

来源：

ADVANCED MATERIALS AND PROCESSES II, PTS 1-3 | 2012年 / 557-559卷

关键词：

Nano-SiO2; Epoxy; Coating; Corrosion Resistant;

D O I：

10.4028/www.scientific.net/AMR.557-559.1865

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nano-SiO2 which surface was modified by silane coupling agent was used to modify the epoxy coatings which was prepared by the method of chemical modification and physical dispersion using the modified nano-SiO2 and epoxy. The molecular structure and dispersity of the modified nano-SiO2 were studied by Fourier transform spectra(FT-IR) and scanning electron microcopy(SEM). The effect of nano-SiO2 on corrosion resistance of epoxy coating was studied by electrochemical impedance spectroscopy(EIS). The results show that the modified nano-SiO2 contained the Si-OH characteristic functional group which can promoted the nano-SiO2 grafted with epoxy and had a good dispersion; Compared to epoxy coatings, wear rate of the modified epoxy coating reduced about 20% and the impedance value of the modified epoxy coating using the method of soak in 3.5% solution of NaCl for 240h, improved by 5 orders of magnitude.

引用

页码：1865 / 1868

页数：4

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