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New study for protection of carbon steel of petroleum equipment by Al/ Zn epoxide

Osama M.Abo-Elenine, Olfat E.Elazabawy, Nahed M.Amer

The epoxy compound; Kema POX RL671 X 75; Chemicals and Technologies Company; is used as a resinmaterial. It is formulated at ratio 100 parts with inorganic filler as 25 parts of aluminum past, 15 parts Talc, 10 parts Silica gel, 10 parts of TiO2 and different ratios of Zinc dust 0, 5, 10,15, 20, 25 parts. These formulas are cured withKema POX HF 115 70 at 10, 20 and 30 parts of toluene di-isocyanate (TDI). The visual inspection, physical, mechanical and chemical properties such asWet Film Thickness (WFT), Dry FilmThickness (DFT), adhesion force, bending, impact, and hardnesswere studied. Sea water effect at period time of twoweeks for the formed dry films was studied in salt spray test. The surfaces of the films were visually inspected by magnification power after all tests. The results indicated that the corrosion spots did not be detected on the surface of the formed dry films. Potentiodynamic polarization and electrochemical impedance spectroscopic studies were performed for the formed dry films. These results approved that; these films can be used as protecting agents for the surfaces of petroleum equipment against corrosion.