Abstract
Acrylic acid modified melamine resin (AM) was synthesized and used as a curing agent, in different compositions (10–40 wt.%), for DGEBA-epoxy resin (EAM). EAM resins were applied on mild steel strips of standard size to study their coating properties. The structures of AM and EAM were established by IR and 1 H NMR spectroscopies. The physico-mechanical and anticorrosive behavior of these coatings was evaluated by standard methods. The solubility of AM was determined in various organic solvents at room temperature. TGA and DSC techniques were used to analyze the thermal properties and curing aspects of the resin. The sample with 30 wt.% loading of AM (EAM-30), among all EAM resins gave better physico-mechanical and corrosion resistance performance under various corrosive media. The acrylic-melamine modified DGEBA-epoxy coatings were compared with the reported DGEBA-polyamide coating system. It was found that EAM-30 exhibited better anticorrosive properties than the reported DGEBA-polyamide coating system.
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