Improvement of corrosion protection of steel by incorporation of a new phosphonated fatty acid in a phosphorus-containing polymer coating obtained by UV curingReportar como inadecuado




Improvement of corrosion protection of steel by incorporation of a new phosphonated fatty acid in a phosphorus-containing polymer coating obtained by UV curing - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1 CIRIMAT - Centre interuniversitaire de recherche et d-ingenierie des matériaux 2 ICG ICMMM - Institut Charles Gerhardt - Institut de Chimie Moléculaire et des Matériaux de Montpellier

Abstract : tSix formulations containing diacrylate monomers from 89 to 92.5% w-w as well as a phosphonatedmethacrylate monomer from 1 to 10% w-w were prepared. All formulations were UV-cured and thecorrosion performance of the resulting coatings applied onto a steel substrate was assessed by elec-trochemical impedance spectroscopy EIS. It was first shown that the coatings containing phosphonicacid methacrylate MAPC1OH2 instead of methacrylate phosphonic dimethyl ester MAPC1 presentedhigher corrosion protection related to the strong adhesive properties of phosphonic acid on the metalsubstrate. A minimum MAPC1OH2content of 2.5% was determined to provide the highest impedancevalues best efficiency. Then, a new bio-based compound, i.e. phosphonic acid-bearing oleic acid phos-phonated fatty acid, was synthesized and added as an inhibitor to the formulations. In the presence ofthis compound, the corrosion protection was notably improved. The beneficial effect of phosphonatedfatty acid was explained by its inhibitive action at the steel-coating interface and by the improvement ofthe barrier properties.

Keywords : Phosphonated methacrylate Coating Phosphonated fatty acid Inhibitor Electrochemical impedance spectroscopya





Autor: France Millet - Rémi Auvergne - Sylvain Caillol - Ghislain David - Abdelatif Manseri - Nadine Pébère -

Fuente: https://hal.archives-ouvertes.fr/



DESCARGAR PDF




Documentos relacionados