Medium-transparency wear-resistant self-cleaning glass and a preparation method thereof

Abstract

The invention discloses medium-transparency wear-resistant self-cleaning glass and a preparation method thereof. The glass comprises a glass substrate and a thin film layer formed on the surface of the glass substrate by using a magnetron sputtering method, wherein the thin film layer comprises the following raw materials: in percent by mass, 15-25% of hydroxyl oxidize iron, 5-15% of fullerene carboxylic acid derivatives and 65-75% of nano titanium dioxide, and the obtained thin film layer has a thickness of 100-300 nm. The medium-transparency wear-resistant self-cleaning glass has high photocatalytic activity, high hydrophilicity, strong self-cleaning ability, an oleic acid degradation rate of 87.4% and a methyl orange degradation rate of 90.0%, the transmittance to visible light can reach 74.2%, and the wear resistance is good; and the medium-transparency wear-resistant self-cleaning glass has a good self-cleaning effect, high visible light transmittance and use durability at the same time.

Description

technical field [0001] The invention relates to a functional glass, in particular to a medium-transmittance wear-resistant self-cleaning glass and a preparation method thereof. Background technique [0002] Functional glass is a new material widely used at present. With the continuous high-rise buildings and the large-scale application of glass curtain walls, glass roofs and glass structures in high-rise buildings, as well as the increasing environmental pollution problems worldwide, the cleaning problem of glass has become increasingly prominent. Functional glass has become a hot and difficult research topic all over the world. [0003] At present, the self-cleaning glass on the market mainly forms a layer of TiO on the surface of ordinary glass by sol-gel method, chemical vapor deposition method, magnetron sputtering method and other coating technologies. 2 film to achieve the cleaning function. The principle is mainly: TiO 2 With strong photocatalytic activity, under ...

AI Technical Summary

Problems solved by technology

[0004] However, the aforementioned TiO 2 The self-cleaning glass prepared by the photocatalytic activity and the hydrophilicity after film formation has the following deficiencies: 1) TiO 2 The photocatalytic quantum yield is low, the total reaction speed is slow, and the photogenerated carriers are easy to recombine, which directly affects the photocatalytic efficiency and the decomposition effect of organic matter; 2) due to the 2 The energy band structure of the film determines that the film layer can only absorb and utilize ultraviolet rays, and only produce photocatalytic activity under ultraviolet irradiation, which greatly limits the scope of use of self-cleaning glass; 3) Porous TiO 2 In the actual application process, the film is easy to accumulate dust and other micro-pollutants, and it is easy to generate multiple photogenerated electrons and holes to recombine, resulting in TiO 2 Thin film glass fails quickly and shortens product life; 4) TiO 2 Thin film specular reflection phenomenon is more serious, easy to cause light pollution, and with TiO 2 As the content increases, the visible light transmittance decreases, which affects indoor lighting

5) Porous TiO 2 The scratch resistance of the film is poor, and it is easy to wear or even fall off under the action of external force, resulting in TiO 2 Loss of self-cleaning performance of thin film glass

[0005] Although the current research on self-cleaning glass has made a lot of progress, there are relatively few self-cleaning glasses with strong photocatalytic activity and hydrophilic wettability at the same time, and most self-cleaning glasses are in order to obtain high light transmission. Porous film is often used for high-resistance, which has poor durability and cannot meet the requirements of high light transmittance and strong durability at the same time.