METHODS OF PIGMENTATION OF POLYSILOXANE RESIN AND HEAT-RESISTANT COATINGS ON THEIR BASIS

Abstract

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