Nanometre modified high self-cleaning solar heat reflecting paint and preparation method thereof

Abstract

The invention discloses a nanometre modified high self-cleaning solar heat reflecting paint and a preparation method thereof. The preparation method comprises the steps of firstly, adding deionized water to an agitator tank, then adding a wetting dispersant to agitate, and orderly adding nanosilicon dioxide, titanium dioxide and padding at the rotating speed of 400-600r / min; stirring for 10-15min, and then adding a defoamer, an assistant and mildew fungicide, and dispersing for 20-30min at high speed of 800-1200r / min; grinding until the fineness is less than 10 microns with a sand mill to form mill base, and then adding fluorocarbon resin emulsion, a coalescing agent, a flatting agent, organic silicon resin and a PH regulator to evenly stir and filter, so as to prepare the nanometre modified high self-cleaning solar heat reflecting paint. The nanometre modified high self-cleaning solar heat reflecting paint is hydrophobic and oleophobic; greasy dirt and dust are difficult to attach to the surface; not only is the beautiful appearance kept, but also the reflectivity of sunlight is effectively improved, and the cleaning work is also reduced.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a nano-modified high self-cleaning solar heat reflection coating and a preparation method thereof. Background technique [0002] Solar heat reflective coatings mainly use the white surface to reflect the heat energy of visible light and near-infrared light in sunlight. The contact angle of ordinary paint films is generally less than 90°, and it is difficult to remove dust and oil stains on the surface automatically. It is difficult to clean even manually. When the surface of the coating is polluted, its ability to reflect sunlight will be greatly reduced. Manually cleaning it is time-consuming and labor-intensive, especially difficult for tall buildings. Contents of the invention [0003] The object of the present invention is to provide a nano-modified high-self-cleaning coating that not only has an excellent self-cleaning function but also improves the reflection ability to ...

AI Technical Summary

Problems solved by technology

[0002] Solar heat reflective coatings mainly use the white surface to reflect the heat energy of visible light and near-infrared light in sunlight. The contact angle of ordinary paint films is generally less than 90°, and it is difficult to remove dust and oil stains on the surface automatically. Difficult to clean even by hand

When the surface of the coating is polluted, its ability to reflect sunlight will be greatly reduced

It is time-consuming and labor-intensive to clean it manually, especially for tall buildings

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