A kind of anticorrosion coating with high temperature resistance and high emissivity

Abstract

The invention relates to a high-temperature-resistant high-radiation rate anticorrosion coating, which is made of the following raw materials in parts by weight: 5-10 parts of cordierite micropowder, 4-8 parts of ferric oxide micropowder, 2-6 parts of chromium oxide micropowder, 6-10 parts of cobalt powder, 4-10 parts of manganese-ferro-spinel powder, 15-20 parts of borosilicate glass powder, 3-5 parts of low-melting glass powder modified graphene, 30-50 parts of binder, 0.1 parts of dispersant ‑0.2 part, 0.03‑0.1 part of wetting agent, 0.15‑0.3 part of thickener and 0.05‑0.15 part of defoamer. The anti-corrosion coating of the invention has both low-temperature and high-temperature anti-corrosion properties and has high infrared radiation rate.

Description

Technical field [0001] The present invention relates to the field of anticorrosive coating, and more particularly to high temperature and high radiation preservativeless coatings. Background technique [0002] Metal heating or heat exchanger occurs surface oxidation and corrosion in long-term use of high temperature air, thereby affecting the life of the metal heating or heat exchanger; on the other hand metal has good thermal conductivity, but metal-to-heat radiation capabilities Lower, general metal infrared radiation ranges from 0.5 to 0.8 and the infrared radiation of ceramics can reach 0.9. Therefore, in the surface of the metal heating body or heat exchanger, a ceramic anti-corrosion coating having high temperature and high radiation can greatly improve the life of the metal heating body and the heat conversion efficiency, thereby achieving the effect of energy saving and emission reduction. . [0003] Recently, research on infrared high radiant energy-saving coatings and a...

AI Technical Summary

Problems solved by technology

The invention patent (201811596519.5) discloses an inorganic high-temperature ceramic wear-resistant anti-corrosion coating. The high-temperature ceramic anti-corrosion coating prepared by using inorganic adhesives, ceramic compositions, and low-melting glass as main raw materials has certain high-temperature anti-corrosion performance and medium Low temperature wear resistance, but the coating does not have the functions of low temperature corrosion resistance and infrared radiation rate

The invention patent (application number 201811606111.1) discloses a highly stable heat-absorbing energy-saving coating, which mainly uses electro-fusion raw materials with high absorption / high radiation performance and silicone resin or ceramic resin as the main raw materials, and the prepared enhanced heat-absorbing energy-saving Coatings have high infrared emissivity, but poor oxidation and corrosion resistance at high temperatures

The invention patent (application number 201910384006.6) discloses a kind of anti-corrosion coating and its preparation method. It mainly uses graphene powder, zinc powder and water-based epoxy resin as the main raw materials to prepare a kind of anti-corrosion coating with good anti-corrosion and stability. However, the use temperature is not high; the invention patent (application number 201910068018.8) discloses a graphene-based organic and inorganic high temperature resistant anti-corrosion coating and its preparation method, using water-based inorganic salt adhesive, graphene and silicone resin as the main raw materials to prepare a A high temperature resistant anti-corrosion coating, but the coating can only be used in medium and low temperature environments and has only a single anti-corrosion performance

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