Integral assessment of anti-corrosion materials‘ quality

Abstract

In modern conditions, protective paint and varnish coatings are used everywhere to ensure the safety of metal structures and include the materials of various composition and application. The paints and varnishes market offers conventional hard and thixotropic anticorrosive coatings applied by the devices using airless spray technology. The article describes the experiment results, which consists in conducting a comparative analysis of protective materials in the framework of laboratory studies. The main physical and mechanical properties are determined. Modeling of anticorrosive coatings‘ indicators, which determine the degree of change in material properties in terms of adhesion, thickness, uniformity, flexibility and weather resistance of the treated surface of a metal structure, has been carried out. The values of the indicators were formed within the framework of the existing database, created and replenished using the real data obtained during the maintenance and repair of the existing facilities. The considered method is applicable for any number of analyzed surfaces and parameters of anticorrosive materials. As a result, it was found that the traditional coatings within the considered sufficiency indicators meet the specified requirements by 85-90=. However, the primer “Tectyl BT Coat” is the best option for using anticorrosive materials to protect the steel structures exposed to aggressive environmental influences. The sufficiency level for this primer is 92=, which determines its first place in the rating. The proposed method of experimental research and subsequent integral assessment of satisfying the requirements adequacy is versatile and is a tool that can be used when solving the problems of multi-criteria selection or ranking of a finite number of different anti-corrosion coatings or other objects.