Modification of Epoxy coatings by conducting polymers for improved corrosion protection of Mild Steel

Author Name(s):

Elias George K¹, Bhagyesh V Bhaskaran¹ and Dr A. Mathiazhagan²

¹Research scholar of Department of ship technology, Cochin university of science and technology University

²Research supervisor, Professor, Department of ship technology, Cochin university of science and technology University

Abstract

The use of conducting polymers is a very promising technique to improve the corrosion resistance of metals. In this study polyaniline (Pani) is used to improve the corrosion resistance of epoxy coatings    Pani coated chitin and Pani coated silica   were prepared by the insitu polymerisation of aniline in presence of silica and chitin respectively. Then they were used to prepare nanocomposites based on epoxy resin. The nanomaterials were incorporated in epoxy resin by ultrasonication process. Flexible epoxy coatings thus prepared were applied on mild steel. The coated   samples were prepared by dipping process and the samples were used to study corrosion protection. The analysis was performed by electrochemical impedance spectroscopy in 3.5% NaCl solution. The structural characterisation of the resin, nanofillers and the nanocomposite coatings were done by IR spectroscopy, TEM and XRD.   The mechanical properties were measured using UTM. The studies show that PANI coated chitin and PANI coated silica can significantly improve the corrosion resistance of epoxy coating.

KEYWORDS; Epoxy resin, Mild steel, Corrosion, PANI coated chitin, PANI coated silica.

Please cite this article as: DR.D.THIRUMALA RAO (2021). A Study on “Reverse Innovation” – A Rising Phenomenon from Indian Perspective . International Journal of Recent Research and Applied Studies, 8- 4(19), 122-126