Thermostable low radiation composite film glass and its production technology

Abstract

The present invention discloses a thermal stable low-radiation compound film glass and its production process. It is characterized by that the upper surface of glass base is covered with a compound film formed from bottom layer electrolyte layer, first protection layer, silver layer, second protection layer and surface layer electrolyte layer. The described bottom layer electrolyte layer is aluminium chloride, its thickness is 40-55 nm, the described two protection layers are stainless steel, nichrome alloy or their partial oxide or nitride, its thickness is 1-10 nm, the thickness of the described silver layer is 10-18 nm, and the described surface layer electrolyte layer is aluminium nitride or aluminium oxide, and its thickness is 40-65 nm.

Description

technical field [0001] The invention relates to a glass, in particular to a thermally stable low-radiation composite film glass and a production process for the glass. Background technique [0002] Glass is widely used in commercial and residential buildings for daylighting. The heat transfer coefficient of single-layer glass is usually much higher than that of building walls, and the glass of doors and windows becomes an important energy-consuming factor in the heating and air-conditioning system of buildings. Therefore, since the 1980s, researchers have developed low-emissivity film insulating glass to reduce the heat loss of glass windows and reduce the energy consumption of heating in winter and air conditioning in summer. There are generally two types of low-emissivity films for construction. One is doped oxide semiconductor low-emissivity films, also known as transparent conductive oxide films. For example, fluorine-doped tin oxide low-emissivity films are prepared by...

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Problems solved by technology

However, this kind of low-emissivity film glass is very difficult in the process of thermal processing. If the titanium metal layer is too thin, the protective effect is not enough, and the film layer will be destroyed after heating; if the titanium metal layer is too thick, heating The back metal layer is not fully oxidized, resulting in inconsistent optical properties of the film

Later, nickel-chromium alloy was used to replace the metal titanium barrier layer, and the oxidation resistance was further improved, but its performance effect was still not satisfactory.

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