Vitis vinífera extract to protect metal from corrosion

The corrosion of metals is a deterioration process that, despite its inevitability, can be controlled. However, due to toxicity or environmental concerns associated with traditional inhibitors, there is great interest in finding effective and environmentally friendly substitutes. The objective of this research is to evaluate the anticorrosive activity of the Vitis vinifera extract. The extract was characterized by Folin-Ciccolteau and ABTS analytical tests. Subsequently, polyvinylbutyral primers were formulated, prepared and applied on SAE 1010 steel. The painted panels were exposed in salt mist and humidity chambers and the degrees of corrosion and blistering were evaluated. Also were carried out essays on service with painted panels exposed on the roof of the UTN FRM University for a period of six months. Primers containing zinc tetroxychromate were used as controls. The results showed that the primer with Malbec grape pomace extract can be used to protect steel in non-aggressive environments.

Keywords: Malbec grape, Corrosion, Primers