First, the advantages of high temperature resistant coatings
1, a high-temperature thermal insulation coating, coated with a special solution, has a temperature resistance range of -80℃- 1800℃, can directly insulate the flame, has a thermal conductivity of only 0.03W/m.K, can effectively inhibit and shield infrared radiation and heat conduction, has a thermal insulation inhibition efficiency of about 90%, and can inhibit thermal radiation and heat loss of high-temperature objects.
2. Anti-corrosion coating with high temperature resistance up to 1700℃. The coating can protect the substrate from corrosion, oxidation and sealing protection in high temperature gas (flue gas), fire and high temperature liquid (seawater and sewage). The coating has high stability and wear resistance, and will react with other active molecules at high temperature, with long service life.
3. Wear-resistant waterproof coating, with temperature resistance up to 600℃ and pure corundum as the main component, with room temperature strength up to more than 2 10 MPa. The coating can be coated in a thin layer and can be used in industry, metallurgy, mining, construction, transportation, medicine, light industry and so on. , with non-stick cavitation friction, non-stick hardness friction and non-stick impact friction. In addition, the coating is acid and alkali resistant, waterproof and has good adhesion.
4. High-temperature-resistant sealing coating, with high temperature resistance up to 1700℃, good waterproof and sealing performance, convenient coating, long service life, acid and alkali resistance, anti-aging, self-cleaning and wear resistance, can well protect the substrate from water, liquid and steam corrosion, prolong the service life of the substrate, and can be directly coated on the surfaces of high-temperature flue, chimney, concrete, various metals and fibers for thermal insulation.
5. The high-temperature resistant inorganic adhesive can reach 1800℃, has strong adhesion and no corrosiveness to the metal matrix, can maintain good adhesion and corrosion resistance at high temperature, and has long service life.
Second, the high temperature resistant coating construction steps
1. Before the construction of high-temperature resistant coating, adjust the viscosity of the coating with special supporting thinner according to the requirements of the manufacturer, construction environment and workpiece, starting from the ingredients. Approximate dosage of diluent: airless spraying, about 5%~ 10% (calculated by coating quality, the same below); Air spraying, about15% ~ 30%; Brush coating, about 10%~20%. Different manufacturers, different coating products, the amount of thinner is also different.
2. And in the process of construction, the coating thickness should be detected at any time according to experience. If the thickness does not meet the specified requirements, it should be painted in time; Before the coating is wet or the next spraying, the coating should be protected to prevent pollution or damage; After spraying, the surface of the coating film should be free from flow marks and missed spraying, with uniform thickness and uniform color, and free from defects such as roughness, sagging, cracks, blistering and peeling.
Three. Matters needing attention of high temperature resistant coating
1. Any coating construction must meet the specified temperature and humidity conditions, and silicone coating is no exception. The optimum ambient temperature for coating construction in silicone is 5~40℃ and the ambient humidity is 25%~85%.
2. It is very important to install an oil-water separator in the air compressor, and drain water from the oil-water separator and the air compressor regularly every day.
3. Before painting, cover the parts that don't need painting, such as wedge groove, shaft hole, finishing surface and some special parts.
4. Before painting, strictly check whether the painting equipment is clean and dry. If there is pollution, it must be treated to meet the corresponding requirements before painting.
5, paint mixing, it is forbidden to use gasoline and water, it is best to use special thinner to adjust the viscosity of the paint.
6, spraying tools after use, should be cleaned in time, keep clean and dry, for the next use.
7. Manual trampling and mechanical damage should be avoided on the surface of paint film during handling.
8. Try to use environmentally-friendly high-solid silicone paints, especially the paint varieties of brand paint manufacturers.
9. Cure according to the drying conditions required by silicone coating products to ensure the quality of paint film.
Our high-temperature resistant coatings have many advantages, so we can see that high-temperature resistant coatings are the best quality coatings for decoration. We introduce the detailed steps of high-temperature resistant coatings construction and the precautions for high-temperature resistant coatings for your reference.