Optimization of anti- Corrosion of Epoxy/Zinc Phosphate and Nano Silica coating

Mirzababaei, Siamak; Kalaee, Mohammadreza

Optimization of anti- Corrosion of Epoxy/Zinc Phosphate and Nano Silica coating

Document Type : Original Research

Authors

S. Mirzababaei

M. Kalaee

Polymer Engineering Group, Faculty of Engineering, South Tehran Branch, Islamic Azad University

Abstract

Research subject: In this research we studied the anti-corrosion properties of epoxy coating containing anti-corrosion pigment zinc phosphate with hydrophobic nano silica with different percentage also for determine the optimal conditions for preparation of nanocomposite Taguchi experimental design method was used.

Research approach: Anti-corrosion properties of epoxy coating under the influence of very important factors such as the percentage of nano silica, anticorrosive pigment and pigment to resin ratio according to model L9 taguchi method was studied and analyzed. Anti-corrosion properties of epoxy coatings were studied by electrochemical impedance spectroscopy test (EIS) in 3/5% NaCl aqueous solution and salt fog test (salt spray). To investigate the distribution of nano silica particles in epoxy resin were analyzed by transmion electron microscope (TEM) and scanning electron microscope (SEM). The results show that using from zinc phosphate and nano-silica was able to improve the corrosion resistances.

Main results:Results shows that addition of zinc phosphate and nano silica to epoxy resin caused a decrease in number of blisters and corrosion products after exposure to corrosion test based on the results in Nyquist and Bode plots, also the similarity in results was observed for the epoxy coating loaded according to the optimum conditions with 8% zinc phosphate, 3% nano silica and pigment to resin ratio of one according to salt spary. The significance levels of the experimental parameters, which indicate how the factors affect the compressive addition of zinc phosphate and nano silica to epoxy resin, were determined by using variance (Anova) method.

Keywords

Corrosion of Epoxy Coating

Zinc Phosphate Pigment

Taguchi method

Nano Silica

Subjects

nano-composite

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