CORROSION PROTECTION OF STEEL WITH CARBON NANOTUBES INTO EPOXY PAINT COATING
E. V. BUTYRSKAYA *
Department of Chemistry, Voronezh State University, Voronezh, Russia.
S. A. ZAPRYAGAEV
Department of Computer Science, Voronezh State University, Voronezh, Russia.
L. S. NECHAYEVA
Department of Chemistry, Voronezh State University, Voronezh, Russia.
*Author to whom correspondence should be addressed.
Abstract
A new epoxy paint material comprising the multiwall carbon nanotubes was developed for effective corrosion protection of steels in neutral salt medium. The increasing of the corrosion protection properties of the coating with carbon nanotubes (CNT) as compared to the undoped material was established. The strengthening of the coating protective properties is due to the hydrophobicity of CNT and due to the adsorption by CNT of the particles supporting the corrosion process (metal cations, atoms and molecules of oxygen, hydroxyl groups, anions). The quantum chemical calculations showed that CNTs have a high affinity to the listed atoms and ions.
Keywords: Steel, epoxy paint, carbon nanotubes, nanocomposite coatings, corrosion protection, quantum-chemical calculation