Electrolytic coloring liquid of aluminum profile and preparation method, application and application method thereof

Abstract

The invention discloses electrolytic coloring liquid of an aluminum profile and a preparation method, application and application method thereof and belongs to the technical field of aluminum profile surface treatment. The electrolytic coloring liquid of the aluminum profile is composed of pure sulfuric acid, stannous mono-sulphate, nickel sulfate, coloring additives and water, the mass concentration of the pure sulfuric acid is 15-18 g / L, the mass concentration of the stannous mono-sulphate is 8-12 g / L, the mass concentration of the nickel sulfate is 15-30 g / L, and the mass concentration of the coloring additives is 20-30 g / L; the coloring additives are composed of D-tartaric acid, catechol, boric acid and sulfamic acid, and the coloring additives are composed of, by mass, 30%-40% of the D-tartaric acid, 30%-40% of the catechol, 20%-30% of the boric acid and 5%-10% of the sulfamic acid. By means of the electrolytic coloring liquid of the aluminum profile, a series of bright colors, namely light bronze to dark bronze to black, can be generated, the coloring of the aluminum profile is uniform, bright, little in chromatic aberration and good in reproducibility, a bath solution can keep clear and transparent for a long time, the dispersion capacity of the bath solution is great, the stability of tin ions is high, and the consumption is low.

Description

technical field [0001] The invention belongs to the technical field of aluminum profile surface treatment, and more specifically relates to an aluminum profile electrolytic coloring solution and its preparation method, application and application method. Background technique [0002] Aluminum alloy extrusion profiles are widely used, and its surface treatment technology has achieved rapid development. In order to improve the protection and decoration performance of aluminum alloy profiles, it is necessary to carry out anodic oxidation and coloring treatment on aluminum alloy materials. The coloring methods of aluminum alloy after oxidation generally include chemical dyeing method, natural coloring method and electrolytic coloring method. In the 1960s, Asada in Japan invented the secondary electrolytic coloring method. The light resistance, heat resistance, wear resistance and corrosion resistance of the coloring film of this method were significantly improved compared with t...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the existing problems in the electrolytic coloring of aluminum profiles that the coloring reaction is difficult to control, the equipment is complicated, the operation is cumbersome, the coloring range is narrow, the color is not bright enough and uniform, and it contains precious metal elements, the invention provides an electrolytic coloring solution for aluminum profiles and a preparation method thereof , application and application method, it does not contain precious metals, low cost of use, and simple operation, easy to grasp the coloring reaction, wide range of coloring, can produce a series of bright colors from light bronze to dark bronze to black, aluminum profiles are evenly colored , bright, small color difference, good reproducibility; the tank solution of the present invention is clear and transparent, has strong dispersion ability, high stability of tin ions, and low consumption