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The purpose of the work is carrying out the comparative analysis of methods of receiving compositions on the basis of organic silicon resin for creation of a heat-resistant coating and a research of their physical, chemical s and serviceability properties. The method of a dispersion and influence of a dispersing agent and fillers on process of production and properties of heat-resistant paint on the basis of polyorganosiloxane resin was established. The grinding was carried out in two modes: dispersing mixer and beaded mixing. The mode of a beaded mill gives the increased lathering. It is established that adhesion of a film of paint to steel considerably worsens at a high thickness of a coating. Introduction of a disperser minimizes dependences of adhesion on coating thickness. Dependence of adhesion on the maintenance of an aluminum powder in composition and thickness of coating was established. Selection of components for composition of heat-resistant paint is experimentally reasonable and its compounding is developed. The carried-out assessment of properties of composition of paint and coating on its basis indicates compliance of their main serviceability properties. The received coating composition conforms to requirement for heat-resistant paint. The composition is recommended for applying heat-resistant anticorrosion coatings to the exhaust devices of cars, thermo-furnaces, external surfaces of chimneys, heaters exposed to temperatures in the range of 500-600 °C. properties. The received coating composition conforms to requirement for heat-resistant paint.Forcitation:Kazhuro I.P., Koshevar V.D., Shkadretsova V.G. Methods of pigmentation of polysiloxane resin and heat-resistant coatings on their basis. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 3. P. 77-82

The paper studies the wetting of aluminum and glass surfaces with disordered roughness created by technologically simple methods: chemical deposition with simultaneous self-organization of nanoparticles on microprotrusions and valleys, as well as the application of thin coatings using polymer-dispersed systems with polymodal particle size distribution. Super-hydrophobic coatings with an edge wetting angle of 160–170° and a wetting hysteresis of no more than 10° on electrochemically nanostructured aluminum, processed by the dispersion with the polymodal distribution of aerosil microparticles, silicon oxide nanoparticles SiDB and carbon nanocomposite SHDB (Nanosintal, Belarus) in fluorinated varnish. The regularities of changes in the wetting angle of silicate glass with the coating of the same varnish with small additives were established, showing its significant growth with an increase in the content of aerosil microparticles and a decrease in the lacquer concentration. The increase in the content of SiDB and SHDB does not significantly affect the contact angle, but it significantly reduces the hysteresis of its wetting, which gives the glass the effect of “lotus”.

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The phenomenon of strong stabilization of concentrated aqueous dispersions (emulsions) of polymers by colloidal particles of organic nature (microparticles of synthetic latexes), not accompanied by a significant increase in effective viscosity, opened, firstly, the possibility of carrying out the processes of pigmenting them at low energy costs with a maximum yield (dynamic state, meets the conditions of intensification of heterogeneous chemical-technological processes) and, secondly, determined the directions of further research in this area. So, in contrast to the classical method of emulsion stabilization by mineral microparticles adsorbed directly on the surface of their droplets, microparticles of organic origin interact with them through an interlayer of the dispersion medium, localizing in the immediate vicinity of the dispersed phase and thus maintaining a high mobility of the interphase boundaries. In this regard, the proposed method for predicting the type of emulsions of polymers, taking into account the contact wetting angle and the wetting area of the surface of solid particles of a stabilizer with water and a polymer, requires further verification on various systems. The obtained data of fundamental importance also allowed us to propose new applications of stabilized concentrated artificial latexes for solving applied problems.