Flaot method for on-line coating self-cleaning coated glass

Abstract

The invention relates to a method of flat on-line coating self-cleaning coated glass. In the method, the lehr outlet of float glass production line is equipped with spraying equipment with a liquid storage pot and a spray gun, the spraying liquid filled in the liquid storage pot contains nano-titanium dioxide with the mass concentration of 0.1% to 3%, and the remainders are alcohols; the distancebetween the nozzle of the spray gun and the glass face is 200 to 350 mm; the traveling speed of the spray gun is 0.8 to 1.2 m / min; the spraying liquid is sprayed on the float glass surface at the temperature of 60 to 120 DEG C; the film curing lasts 10 to 120 minutes; the self-cleaning coated glass produced by using the method has the advantages of simple, stable and reliable technology, uniform film, low cost, high efficiency, and the like, and is applied to continuous production in large scale.

Description

technical field [0001] The invention relates to a method for on-line production of float glass by spraying self-cleaning coating. Specifically, a layer of nano-titanium dioxide coating is sprayed on the glass surface at the exit of an annealing kiln in a float glass production line by using the cold-end automatic spraying technology. Background technique [0002] With the improvement of living standards and aesthetic concepts, in the construction of modern cities, glass is used more and more in buildings. The entire facade of many modern high-rise buildings is decorated with glass. Due to the permeability and strong reflective effect of glass, the glass must maintain a clean surface in order to show the beauty of the building. The wide application of glass has also brought about the problem of how to keep the glass surface clean. The usual practice is to ask a cleaning company to clean the facade of the building on a regular basis. Great danger, on the other hand, uses a la...

AI Technical Summary

Problems solved by technology

The wide application of glass has also brought about the problem of how to keep the glass surface clean. The usual practice is to ask a cleaning company to clean the facade of the building on a regular basis. Great danger, on the other hand, use a large amount of cleaning agents to clean the glass surface, these cleaning agents are directly discharged into urban rivers through urban rainwater pipes without treatment, causing environmental pollution

[0003] In order to solve the above-mentioned problems of building glass cleaning and environmental pollution, self-cleaning coated glass has been produced at home and abroad, such as CN1312337 describes the preparation of TiO by sol-gel method 2 Self-cleaning coated glass, CN1267644 describes preparing TiO with magnetron sputtering 2 Self-cleaning coated glass, the production methods of the above patents either need to be implemented at high temperature, or implemented by physical methods, the production process is complicated, the cost is high, and the production efficiency is low