High-temperature-resistant energy-saving nano coating

Abstract

The invention discloses a high-temperature-resistant energy-saving nano coating. The high-temperature-resistant energy-saving nano coating is divided into a bottom coating and a surface coating in a weight ratio of 1:2, wherein the weight ratio of a component A to a component C in the surface coating is 1:(1.2-1.5), and the weight ratio of a component B to the component C in the bottom coating is 1:(1.0-1.5); the component A consists of feldspar, flint clay, kaolin, mullite, iolite, zirconium dioxide, zeolite, nano aluminum oxide, mica and zircon sand; the component B consists of nano titanium dioxide, conventional titanium dioxide, nano silicon dioxide, conventional silicon dioxide and nano aluminum oxide; and the component C consists of aluminum dihydrogen phosphate. The high-temperature-resistant energy-saving nano coating has long-term stable high emissivity, is compact in coating layer, has high high-temperature anti-powdering performance, and is long in service life, convenient to industrialize, and good in energy-saving effect.

Description

technical field [0001] The invention relates to a nano-coating, in particular to a high-temperature resistant and energy-saving nano-coating. Background technique [0002] At present, high-temperature infrared energy-saving coatings at home and abroad can basically be divided into two categories. The first category is silicon carbide-based infrared coatings, such as the Encoat infrared coatings jointly launched by the British Harbert Beven company and European and Australian countries. The second category is infrared coatings based on transition metal oxides (such as chromium oxide, nickel oxide, etc.). For example, the infrared coatings CRC1100 and CRC1500 launched by Japan CRC Company, the radiation powder is composed of cobalt oxide, chromium oxide, nickel oxide, manganese dioxide and so on. Since the problem of high-temperature oxidation of silicon carbide has not been effectively solved, the emissivity has been continuously attenuated, and there is a certain energy-sa...

AI Technical Summary

Problems solved by technology

Since the problem of high-temperature oxidation of silicon carbide has not been effectively solved, the emissivity has been continuously attenuated, and there is a certain energy-saving effect in the short term, but the long-term (that is, more than 6-12 months) energy-saving effect is not ideal, and it is confusing in the short term and cannot be effective. promotion; at the same time, the silicon carbide material is very dense, and it is easy to sink in the coating, resulting in serious delamination

The materials used in the second category have to go through high-temperature calcination at 1200°C, high-temperature doping, and then crushing, ball milling and other processes. The production process consumes a lot of energy and pollutes the environment. More importantly, the energy-saving effect is not ideal and cannot be promoted on a large scale.

The above two types of coatings basically do not have high-temperature anti-powdering performance due to the insufficient density of the coating.

[0003] In order to solve the above problems, the applicant has applied for a Chinese patent "a high-temperature nano energy-saving coating", the patent number is: 2010102776447, which provides a high-temperature nano Energy-saving paint; but it also has the following disadvantages: slightly lower refractoriness, shorter storage period, and easy to foam when dried too quickly; in addition, it is found through research that the raw materials used in this patent are more impurities in ferroferric oxide and talcum powder , will reduce the refractoriness of the coating; according to market research, the Suzhou soil used in this patent has basically been mined, so it is necessary to find a new material to replace it.