Application of Pentaglycidyl ether Penta-ethoxy Phosphorus Composites Polymers Formulated by Two Additives, Trisodium Phosphate (TSP) and Natural Phosphate(NP) and their Combination in the Behavior of the Coating on E24 Carbon Steel in NaCl 3.5%

The new synthesized polymer named pentaglycidyl ether penta-ethoxy phosphorus (PGEPEP) was tested in the behavior of the coating on the metal substrate in a marine environment. In the first step, we developed hybrid composites by collecting two charges respectively trisodium phosphate and natural phosphate. In the second step, we applied the different hybrid composites F1 (PGEPEP/TSP), F2 (PGEPEP/NP) and F3 (PGEPEP/TSP) combined from epoxy resin and synthetic filler, natural load and both sets on E24 carbon steel in 3.5% NaCl. Finally, the gravimetric and electrochemical measurements of the composite F3 (PGEPEP/ TSP) are very encouraging and reach a maximum efficiency respectively equal to 93%, 95% and 92%.