Abstract
Abstract High performance water soluble epoxy ester resin was synthesized by partially reacting bis-phenol A based epoxy resin with different fatty acids. The resultant epoxy ester resin was then reacted with diethanol amine. These resins were characterized by FTIR, NMR, DSC and TGA. Further, the prepared epoxy esters were neutralized using phosphoric, lactic, acetic and hydrochloric acids to make them water soluble. Mild steel panels were coated with the water soluble epoxy ester resins and their performance were evaluated by monitoring adhesion, tensile, scratch hardness, bend and impact resistances. The corrosion resistance properties of the coatings were evaluated by salt spray, seawater immersion and electrochemical impedance spectroscopy. It is observed that phosphoric acid neutralized tung oil fatty acid based epoxy ester has better mechanical and anticorrosive properties than the rest of the water soluble polymers.
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