TECHNOLOGY FOR OBTAINING ANTICORROSIVE COATINGS BASED ON LOCAL RAW MATERIAL

Abstract

This article examines the technological principles of producing anticorrosive coatings from locally available mineral and organic raw materials. The study is based on a compositional approach in which the protective performance of the coating is formed through the interaction of four functional blocks: binder, filler, inhibitive pigment, and processing regime. Special attention is given to kaolin, bentonite, basalt flour, locally sourced phosphate-containing components, and film-forming systems compatible with industrial coating practice. The purpose of the article is to systematize the scientific basis of using domestic resources in protective coating formulations, propose a rational process flow, and identify the main factors controlling barrier and active corrosion protection. The materials-and-methods section describes raw material preparation, fraction control, surface pretreatment, dispersing sequence, curing, and the main evaluation criteria for coating quality. The results indicate that local lamellar and dispersed minerals can reduce porosity, lengthen the diffusion path of water and ions, improve packing density, and support the stabilization of inhibitive species at the metal/coating interface. At the same time, the final efficiency of the coating depends not only on the choice of raw materials, but also on drying, particle size distribution, wetting, mixing intensity, and substrate cleanliness. The discussion shows that local raw materials are technologically meaningful only when their chemistry and granulometry are standardized; otherwise, low cost may be offset by unstable coating performance. The article concludes that anticorrosive systems based on local resources can provide both import substitution and a realistic route toward regionally adapted protective materials for machinery, construction steel, pipelines, and infrastructure components.