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The objective of our work is to study, develop, cha racterize and apply a new epoxy macromolecular matrix in coatings, and their optimi zation for the conservation of marine heritage. Epoxy resins are technologically a nd nano-technologically compatible thermosetting macromolecule matrices that are easy to implement, according to their structures, viscosimetric and rheological propertie s, for the protection of the heritage possibly subject to atmospheric corrosion. In this sense, we have tested the new macromolecular binder, hexaglycidyl ethylene of met hylene dianiline (HGEMDA), crosslinked and formulated for studying the behavio r of steel coatings in a marine environment. In order to evaluate HGEMDA coating pe rformance, we have studied its adsorption behavior onto the surface of corroded st el, and explained the interactions between the coating macromolecule and the steel sur face. The coating effect on E24 steel was studied by quantum chemical calculations. The adsorption of HGEMDA onto the surface of E24 steel has been well described by the Quantitative Structure of Relation Property model (QSPR). The stationary and transient electrochemical studies are very interesting, since the prediction of the c oating behavior was performed by the semi-empirical PM6, DFT methods and the method of t hree Becke compounds of parameter (UB3LYP), based on 6-311 G. All our calcu l tions were performed using Gaussian software (03).

portugaliae electrochimica acta

Theoretical and Electrochemical Studies of the Coating Behavior of a New Epoxy Polymer: Hexaglycidyl Ethylene of Methylene Dianiline (HGEMDA) on E24 Steel in 3.5% NaCl