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

Xiao Hong Wang; Wei Gao; Beng Sheng Huang; Mei Yang; Yi Jun Shi

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

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 557-559Study on Corrosion Resistant Properties of...

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

Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 557-559)

Pages:

1865-1868

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.557-559.1865

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Online since:

July 2012

Authors:

Xiao Hong Wang, Wei Gao, Beng Sheng Huang, Mei Yang, Yi Jun Shi

Keywords:

Coating, Corrosion Resistant, Epoxy, Nano-SiO₂

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