NCREASING DURABILITY OF PROTECTIVE COATINGS OF FARM MACHINERY AND EQUIPMENT WITH NANO-MODIFIED PAINTWORK MATERIALS
This paper discusses the current areas of work to en-sure the performance of protective coatings for machinery and equipment in theagricultural industry complex for the conditions of Siberia. The following five main areas were identified: corrosion protection, thermoregulation, fire re-sistance, antistatics and radiation protection. It was found that the most efficient way to ensure the performance of coatings is their nanomodification. The method of fire re-sistance tests developed at the Novosibirsk State Agricul-tural University is presented. The results of preliminary tests in two areas are presented: fire resistance and corro-sion protection. One of the promising nano-additives is bismuth oxide which may improve fire resistance and phys-ical and mechanical properties. According to the research results, when the concentration of bismuth oxide reaches 5%, an extremum is observed for the values of hardness (86-94) and adhesion (3.3-3.6 MPa) of the coating. At the same time, the addition of bismuth oxide in a concentration of 7.5% made it possible to achieve a significant increase in the fire resistance of the coating. Fire resistance and ignition time increased to 240°C and 65 s, respectively. Some of the most effective additives are identified and the further direction of the study is indicated which consists in optimizing the compositions of protective coatings and providing a set of properties for operating conditions in each specific case. It is also necessary to take into account the combined effect of nanomodifiers on the properties of the protective coating.