A new polymer-type inhibitor based on a dicarboxylic acid and a vinyltriethoxysilane dispersion

• Y.B. Makarychev, D.B. Vershok and A.A. Chirkunov

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31-4, Leninsky prospect, 119071 Moscow, Russia

Abstract: A new polymeric inhibitor based on a dicarboxylic acid and an aqueous dispersion of vinyltriethoxysilane (VS) has been developed. It has been experimentally proven that organosilanes are removed aqueous solutions due to the precipitation of polyorganosilanes. To prevent interaction with working solutions, a method for introducing VS as a dispersion was proposed. The system heterogeneity is ensured by the Strodex 110 surfactant. The growth mechanism of three-dimensional polymer layers on low-carbon steel in solutions containing bifunctional carboxylic acids and VS dispersions (DVS) has been studied using X-ray photoelectron spectroscopy. It has been found that the dispersion interacts with the metal surface through the coalescence of VS micelles in the near-surface region, followed by hydrolysis and polycondensation with chemisorbed dicarboxylic acid molecules. The growth kinetics and chemical composition of polymer films were determined. Corrosion tests of inhibited samples were conducted in chloride-containing environments. The feasibility of using new inhibitors in water-based paints was investigated. Studies were conducted on the compatibility of VS dispersions with styrene-acrylic paint dispersions during long-term storage and on the effectiveness of the new inhibitor in improving the adhesion and protective properties of acrylic polymer coatings.

Keywords: polymeric inhibitors, dispersions, X-ray photoelectron spectroscopy, acrylic paints, adhesion

Int. J. Corros. Scale Inhib., 2026, 15, no. 1, 229-243
doi: 10.17675/2305-6894-2026-15-1-11

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