Polyaniline/Fluorocarbon Composite Emulsion Coatings for Anticorrosion to Mild Steel

Yu Feng Li; Zhao Po Zeng; Di Wang; Xi Ge Wu; Liang Sheng Qiang

doi:10.4028/www.scientific.net/AMM.151.323

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 151Polyaniline/Fluorocarbon Composite Emulsion...

Polyaniline/Fluorocarbon Composite Emulsion Coatings for Anticorrosion to Mild Steel

Abstract:

Water-based Polyaniline(PANI) emulsion and Fluorocarbon(FC) emulsion were synthesized by emulsion polymerization method. The doped polyanline were characterized by Transmission electron microscope(TEM) and X-ray diffraction(XRD). The results showed the PANI has bar-like shape and local crystallinity. The composite anticorrosion coatings of PANI emulsion and FC emulsion were prepared by mixture in aqueous medium and used for corrosion protection of mild steel. The corrosion protection property of PANI/FC coatings on mild steel was investigated by electrochemical impedance spectroscopy(EIS) and open circuit potential(OCP) technique in 3.5wt%NaCl aqueous solution. The results indicated that the water-based PANI/FC coatings could offer high protection because the impedance values and corrosion potential remained at higher. Scanning electron microscope(SEM) showed that the oxidation film formed on the metal surface and prevent corrosion effectively due to the passive effect of PANI pigment. The anticorrosion coatings are environmental friendly because of water dispersion medium.

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Periodical:

Applied Mechanics and Materials (Volume 151)

Pages:

323-326

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.151.323

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Online since:

January 2012

Authors:

Yu Feng Li, Zhao Po Zeng, Di Wang, Xi Ge Wu, Liang Sheng Qiang

Keywords:

Anticorrosion, Coating, Fluorocarbon Emulsion, Polyaniline Emulsion

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