Thin multifunctional solar reflecting coating and preparation method thereof

Abstract

The invention relates to a thin multifunctional solar reflecting coating and a preparation method thereof. The multifunctional solar reflecting coating is formed by coating multifunctional solar reflecting paint on the surface of a substrate, and the multifunctional solar reflecting paint comprises the following components in weight percentage: 25%-30% of resin system, 0-5% of metallic oxides, 25%-30% of titanium white, 0-2% of talcum powder, 1%-2% of organic bentonite, 2%-3% of corrosion-prevention fillers, 0.5%-1.5% of moist dispersing assistants and 10%-15% of solvents, wherein the resin system is an acrylic resin and curing agent system or a polyurethane modified acrylic resin and curing agent system, the metal oxides are one or more of aluminium oxide, magnesium oxide or zinc oxide, and the corrosion-prevention fillers are one or a mixture of two of aluminum tripolyphosphate or zinc phosphate. In the preparation method, multi-element compounding is carried out by adopting high-reflectivity functional fillers comprising the titanium white, the zinc oxide and the like to realize higher solar reflectivity and hemisphere emissivity of the coating so that the coating has obvious heat-reflecting and cooling effect; the acrylic resin is used as main film forming matter so that the excellent substrate adhesion and the outdoor durability of the coating are realized; and the bottom and the surface of the coating are combined into a whole so that the thickness of the coating is 0.1-0.2 mm, thereby the coating is convenient for construction.

Description

technical field [0001] The invention relates to a solar reflective multifunctional coating and a preparation method thereof, in particular to a thin (coating 0.1-0.2mm) solar reflective multifunctional coating, which belongs to the technical field of solar heat reflective coatings. Background technique [0002] Under the continuous irradiation of strong sunlight in summer, the surface temperature and internal temperature of buildings, transport vehicles, oil storage tanks and other objects will increase to varying degrees - or cause the reduction of the comfort of human living environment, or cause the internal objects The deterioration and damage of the oil may cause the oil to volatilize too fast, cause serious loss, and even catch fire and explode. At present, spraying, air-conditioning, air-conditioning, electric fans and other methods are mostly used in China to cool down, and the annual energy loss accounts for more than 20% of the total annual energy consumption. The...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the solar heat reflective coatings at home and abroad are reflective and heat-insulating. After the coating increases the heat-insulating effect, it also greatly increases the thickness of the coating. Generally, it is more than 3mm and needs to be painted many times. The construction is difficult. The efficiency is low, and the cost is high, and the coating is generally added with functional filler balls with heat insulation effect, the surface flatness is reduced, the anti-fouling performance is poor, and the application cycle is greatly shortened

Although thin solar heat reflective coatings have been reported, they have low solid content, and more organic solvents volatilize during the construction process, causing serious pollution to personnel and the environment.

In addition, the reported solar heat reflective coatings are generally only used as top coats and / or middle layers, and their own anti-corrosion performance is low. Additional primers must be applied and painted multiple times. The construction period is long, and the flatness of the coating is reduced. There are problems matching the primer

In short, there have been no relevant reports on thin solar heat reflective coatings that integrate heat reflection cooling, anti-corrosion, weather resistance, high solid content, integrated bottom surface, and convenient construction.

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