Special purpose coatings

4, 56 NEWS

10 Important events in the coatings industry in 2023
14 Restructuring of Russian business standards — Andrutskaya O. M.

18 Effect of acrylic film-forming on properties of organosilicon lacquers coatings — Kirillov A. A., Candidate of Chem. Sci. Kuz’min M. V., Doctor of Chem. Sci. Kol’tsov N. I.
The effect of copolymers of methyl methacrylate and butyl methacrylate Degalan LP 65/12, Dianal MB 7497 and Dacril SP 652 as an acrylic film on the properties of heat-resistant lacquer coatings based on polymethylphenylsiloxane resin was investigated. The density, viscosity, molecular weight distribution of varnish compositions, as well as the mechanical properties of coatings based on them have been identified: tensile strength, elongation, hardness and elastic modulus. The ratios of acrylic film-forming agents and polymethylphenylsiloxane resin were established at which coatings with optimal properties were obtained.
Keywords: acrylic film-forming agents, copolymers of methyl methacrylate and butyl methacrylate, polymethylphenylsiloxane resin, varnish coatings, elastic-strength properties, gel permeation chromatography, molecular weight distribution.

37 Utilization of the powder coating waste in the production of concrete mixes — Izmaylov V. Т.
The lab researches have completed for usage of powder coating waste as a plasticizer in concrete mixtures and as pigments for volumetric coloring of silicate bricks.
The test results discovered the plasticizing activity of the powder coating waste additive in the concrete mixture. Also detected the low efficiency of using powder coating waste as pigment materials in bulk coloring of silicate bricks.
Keywords: powder coatings, powder coating waste, concrete mixes, building mortars.

40 Coatings based on water-soluble polyesters — Doctor of Tech. Sci., Prof. Mognonov D. M., Doctor of Tech. Sci., Prof. Zayakhanov M. E., Candidate of Tech. Sci., associate professor Dorzhieva E. V., Candidate of Tech. Sci., associate professor Balkhanova E. D., Mangadaev A. M.
The article considers the production of paint and varnish materials based on water-soluble polyesters. Unsaturated and saturated water-soluble polyesters were obtained by the polycondensation reaction in the melt of diols, dicarboxylic acids or their anhydrites and the sodium salt propane hydrochlorohydrin sulfonic acid. The structure of the obtained polymers is confirmed by the data of elemental analysis and IR spectroscopy. Paint coatings with good physical and mechanical properties were obtained on the basis of unsaturated polyesters.
Keywords: water-soluble polyesters, sodium salt of propane hydrochlorohydrin sulfonic acids, saturated polyesters, unsaturated polyesters.

24 Unique coatings and 300 years of the live voice of Stradivarius violins — Candidate of Tech. Sci. Kaverinsky V. S.

27 Methods for reducing costs in engineering and Re-engineering low-volume paint production — Candidate of Tech. Sci., Associate professor Boldyrev V. S., Doctor of Tech. Sci., Professor Men’shikov V. V., researcher Savina A. S., engineer Zotkin A. P., researcher Bogatov N. A., Senior lecturer Tishkin V. V.
The presented work examines in detail the use of the developed expert system for selecting cost-effective technologies and production equipment in the engineering and reengineering of enterprises in the paint and varnish industry. Methods for reducing economic and energy costs when carrying out complex engineering of small-tonnage chemical-technological systems for paint and varnish production are presented. The use of reactors with induction heating is considered, with the possibility of reducing time and operating costs.
Keywords: paint technologies, low-tonnage chemistry, engineering, chemical-technological system, organization of production, synthesis reactors.

44 ISO 22899-1 Standard. Determination of the resistance of passive protection materials to the action of a fire jet. Part 10 — Doctor of Tech. Sci. Drinberg A. S., Candidate of Military Sci. Savelyev D. V., Candidate of Chem. Sci. Pavlovich A. V., Vrublevsky C. B. Doctor of Tech. Sci. Zybina O.A., Mamonov A. I.
The international standard ISO 22899-1, which makes it possible to determine the fire resistance of passive protection materials in a jet fire is considered. Test requires a gas flow rate in the nozzle of 0,3 kg/s at a pressure of 2,3 bar been established. The temperature of the resulting flame can reach 1400 °C
with the formation of a fireball. The types of tested fire-fighting materials facing materials, intumescent coatings, components and structures are indicated. The types of tests by this method: external and internal configuration of the installation are considered.
Keywords: fire jet, jet nozzle, temperature regime, fireball, intumescent coatings, coating erosion.