People usually use coatings coated in metal parts and other materials to prevent corrosion, but organic varnish and lacquer is not heat-resistant, organic resins at temperatures greater than 150 ° C most of the carbonization, and when the temperature is lower than -70 ~ -50 ° C and brittle, resulting in the coating from the surface of the material off, silicone resins have excellent high-temperature and weathering properties, making it the ideal high-temperature coatings materials. In addition, silicone resin is oxidized into silica at high temperatures and sintered with adiabatic materials to form a composite material with higher temperature resistance. In addition to heat resistance, silicone coatings are also weather resistant, water resistant, resistant to various gases and vapors, ozone resistant and ultraviolet resistant. Therefore, it has been widely used as heat-resistant anticorrosive coatings for flue gas, boilers, electric furnaces, various heaters, cement roasters, petroleum cracking furnaces, etc., as well as for aircraft, missiles, spacecraft and other adiabatic protective coatings.
Heat-resistant silicone anti-corrosion coatings are usually divided into two categories: 260 ℃ used below and 260 ~ 650 ℃ range of coatings used. The former is usually modified silicone resin (silicone content of about 25% ~ 30%) as the base material, the latter has a higher silicone content. Generally speaking, the higher the use temperature, the higher the silicone content required.
In the formulation of silicone heat-resistant coatings, in addition to the silicone resin solution that can form a film, it is also necessary to add fillers (such as mica powder, talcum powder, glass powder, etc.) and pigments (usually use heat-stable inorganic pigments, such as aluminum powder, zinc powder, carbon black, etc.). The type of filler has a great influence on the heat resistance of the formulated coating. For example, silicone coatings containing aluminum powder can be used for a long time at 540℃. The addition of silane coupling agent in the silicone thermal insulation coating can improve the dispersion of filler and viscosity of the coating, improve the anticorrosion and water resistance of the coating, increase the adhesion of the substrate and interlayer adhesion, reduce the curing temperature of the coating, and improve the physical and mechanical properties of the coating. In order to accelerate the curing speed of the paint film, a variety of different catalysts can be used. The catalysts are generally octanoates or naphthenates of zinc, cobalt, magnesium and iron, of which zinc octanoate is the most effective.


Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150A. 
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.