Thermal insulating coating and preparation method thereof

Abstract

The invention discloses a thermal insulating coating and a preparation method thereof. In the terms of 100 parts of the coating by weight, the thermal insulating coating consists of the following components: 5-10 parts of sulfide, 0-10 parts of ATO and / or ITO, 1-2 parts of dispersing agent, 33-49 parts of solvent and 45-55 parts of film-forming agent. According to the thermal insulating coating and the preparation method thereof provided by the invention, the use amount of the ATO and / or ITO is reduced as well as the optical and thermal insulation performances of the thermal insulating coating are ensured and the material cost of the coating is decreased because the sulfide is contained in the thermal insulating coating. Meanwhile, the thermal insulating coating has the advantages of simple preparation process, low requirement on equipment and reduced production cost.

Description

technical field [0001] The invention relates to chemical coatings, in particular to a heat-insulating coating and a preparation method thereof. Background technique [0002] The application fields of thermal glass are very extensive, but the existing thermal insulating glass has the following defects: imperfect thermal insulation performance, complicated process and high cost. For example, Ag nano-films or F-doped SnO are widely used in existing insulating glass. 2 Thin film (FTO) etc. are used as thermal insulation coatings, and the chemical vapor deposition (CVD) method must be used in its manufacturing process, and the instruments used are expensive, thereby increasing the cost of thermal insulation coatings. [0003] In the published patent literature, there are some thermal insulation coatings, Sb-doped SnO 2 (ATO), due to the influence of its own carrier concentration and other factors, makes its plasma cut-off frequency in the near-infrared region, so it has a good ...

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Problems solved by technology

[0002] The application fields of thermal glass are very extensive, but the existing thermal insulating glass has the following defects: the thermal insulation performance is not perfect, the process is complicated, and the cost is high

For example, Ag nano-films or F-doped SnO are widely used in existing insulating glass. 2 Thin film (FTO) etc. are used as thermal insulation coatings, the chemical vapor deposition (CVD) method must be used in the manufacturing process, and the equipment used is expensive, thus increasing the cost of thermal insulation coatings

[0003] In the published patent literature, there are some thermal insulation coatings, Sb-doped SnO 2 (ATO), due to the influence of its own carrier concentration and other factors, makes its plasma cut-off frequency in the near-infrared region, so it has a good reflection and absorption effect on the radiation in the near-infrared region, but the Sb element contained in ATO heavy metal elements with certain toxicity

while Sn-doped In 2 o 3 (ITO) has a fairly high infrared blocking effect and high transparency of visible light, but the In element is a precious metal element, and its storage capacity on the earth is very limited, and the use of the In element also increases the cost of raw materials, resulting in inability to widely used

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