1. The electrolytic colored film is based on the transparent anodic oxide film produced by the primary electrolysis of sulfuric acid.
The electrolytic colored oxide film (also called the secondary electrolytic film) is electrolytically colored in a metal salt-containing solution. The weather resistance, light resistance and use of the electrolytic colored film The service life is much better than that of dyed film, and its energy consumption and coloring cost are much lower than that of overall dyed film. At present, it is widely used for the coloring of architectural aluminum profiles, but the electrolytic coloring has a monotonous tone, usually only bronze, black, golden yellow, and maroon. And the operation is not easy to control.
2. Organic dyeing, organic dyeing is based on the adsorption theory of substances.
There are physical adsorption and chemical adsorption. Physical adsorption is the adsorption of molecules or ions by electrostatic force; chemical adsorption is adsorption by chemical force. The two are combined to produce Organic dyeing is usually carried out at a certain temperature. Because the anodic oxide film has high porosity and strong adsorption capacity, it is easy to dye organically. This method has fast coloring, bright color and simple operation. After dyeing, the dye can be firmly attached to the pores of the film, which improves the film's performance. Anti-corrosion ability, anti-fouling ability, until it can maintain beautiful color, it is suitable for a large number of aluminum daily necessities that do not need outdoor use, indoor aluminum industrial products and decorations, etc. and the appearance is colorful. Satisfy people's interest in censorship and pursuit of beauty in modern society, and improve the competitiveness of the product market.