Self-cleaning, antifogging and thermal-insulation coating glass and preparation method thereof

Abstract

The invention discloses self-cleaning, antifogging and thermal-insulation coating glass and a preparation method thereof. The glass comprises a basal plate, wherein the surface of the basal plate is provided with a composite film layer, the composite film layer successively comprises an inner layer, an intermediate layer and an outer layer from inside to outside, the inner layer is a silicon dioxide layer, the intermediate layer is a silicon dioxide and diamond-like layer, and the outer layer is a fluorination diamond-like layer. The glass of the invention has a good self-cleaning, antifoggingand thermal-insulation function, and the binding strength among the film layers is high.

Description

technical field [0001] The invention relates to the field of coated glass, in particular to a self-cleaning, anti-fog, heat-insulating coated glass and a preparation method thereof. Background technique [0002] Glass is an amorphous inorganic non-metallic material, generally made of a variety of inorganic minerals (such as quartz sand, borax, boric acid, barite, barium carbonate, limestone, feldspar, soda ash, etc.) Yes, its main components are silica and other oxides. The chemical composition of ordinary glass is Na 2 SiO 3 , CaSiO 3 , SiO 2 or Na 2 OCaO 6 SiO 2 Etc., the main component is silicate double salt, which is an amorphous solid with random structure, which is widely used in buildings to block wind and transmit light. Silicon dioxide (SiO 2 ) as an inorganic thin film material on the glass surface is a good choice, because silica is an inorganic material with stable physical and chemical properties, good heat resistance, wear resistance and mechanical pr...

AI Technical Summary

Problems solved by technology

However, when the silicon dioxide film is used alone, its surface is easily attached by non-volatile oils or other organic pollutants, blocking its micropores, making the glass surface lose its hydrophilicity and forming a hydrophobic surface, and moisture cannot spread on the glass surface. Come, the glass loses its anti-fog effect

Silica itself has no self-cleaning effect, and cannot effectively prevent and remove volatile organic pollutants on the glass surface

If SiO 2 As the outermost layer, since the surface of the film is rich in hydrophilic groups (Si–OH), it is easy to absorb water vapor from the surrounding environment, resulting in a decrease in the light transmittance of the film.

In addition, the dust in the air is also easy to adsorb on the surface of the film. If the film does not have self-cleaning performance, it will affect the film transmittance.

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