Reflective and heat-isolation coating and preparation method thereof

Abstract

The invention relates to a reflective and heat-isolation coating and a preparation method thereof. The reflective and heat-isolation coating is characterized by being prepared from the following raw materials in parts by weight: 40 to 60 parts of macromolecular emulsion, 4 to 8 parts of composite hollow microspheres, 10 to 20 parts of rutile type titanium dioxide, 1 to 3 parts of flame-retardant agent, 0.5 to 2 parts of filming additive, 0.1 to 0.5 part of wetting agent, 0.1 to 0.5 part of dispersant, 0.1 to 0.5 part of preservative, 0.05 to 0.2 part of defoaming agent, 0.01 to 0.2 part of thickening agent, and 10 to 20 parts of deionized water, wherein the macromolecular emulsion is a mixed solution of acrylate emulsion and polyurethane emulsion; the composite hollow microspheres comprise hollow glass microspheres, hollow ceramic microspheres, and fly ash hollow microspheres. The reflective and heat-isolation coating has the advantages that the components are scientifically compounded, the usage amount of the coating is small, the use cost is low, the reflective and heat-isolation effects of the coating thin layer are good, the construction is rapid, the anti-cracking property, anti-dirt property and weather-resistant property are good, and the certain flame-retardant function is realized.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and particularly relates to a reflective and heat-insulating coating suitable for the fields of exterior walls and roofs such as houses, schools, apartments, etc., and a preparation method thereof. Background technique [0002] The current building energy consumption accounts for 30% of the energy consumption of the whole society, the most important of which is the use of air conditioners. In the hot summer, sunlight is directed to the roof, absorbed by the roof, and transferred into the house to increase the indoor temperature. According to statistics, the roof receives sunshine for the longest time, and the heat absorbed by the roof accounts for 46% of the total heat absorbed by the house. Therefore, research and development Building thermal insulation coatings have significant economic, environmental and social benefits. Reflective heat insulation coating means that when sunlight hits t...

AI Technical Summary

Problems solved by technology

The reflective thermal insulation coatings currently on the market have the following disadvantages: 1. The thermal insulation performance is poor, and the thermal insulation performance of the thermal insulation coating needs to be further improved; 2. The use of solvent-based coatings is not conducive to environmental protection; 3. It is used to prepare reflective insulation Reflective fillers for thermal coatings are generally expensive, resulting in higher costs

4. Conventional heat-emitting heat-insulating coatings are mixed with fluorocarbon resins, reflective materials, and additives. This type of coating has low high-temperature resistance, resulting in a short service life of the coating. In addition, it is easy to expose to high-temperature environments for a long time. peeling off

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