Long-lasting type aluminum alloy surface treating agent

Abstract

The invention discloses a long-lasting aluminum alloy surface treating agent, which is composed of the following raw materials in parts by weight: 0.2 to 0.5 part of sodium sulfaquinoxaline, 1 to 2 parts of tea saponin, 1 to 2 parts of N-(2-hydroxyethyl)ethylenediamine, 1 to 2 parts of sodium biisooctyl sulfosuccinate, 1.5 to 2 parts of acetic acid, 2 to 4 parts of urea, 0.6 to 1 part of copper sulfate, 0.4 to 1 part of algal polysaccharide, 1 to 1.5 parts of monoammonium phosphate, 2 to 3 parts of potassium chloride, 0.4 to 1 part of hydroxyl silicone oil, 0.1 to 0.2 part of ethylene carbonate, 0.1 to 0.4 part of antioxidant, 2 to 4 parts of film-forming auxiliary agent, 14 to 20 parts of silane coupling agent KH590, and 110 to 140 parts of deionized water. The added urea has a very good sustain-release effect, and the tea saponin and algal polysaccharide can strength the adhesive strength of coating, intensify the adhesive force on metal workpiece, and improve the protectiveness.

Description

[0001] technical field [0002] The invention mainly relates to the field of surface treatment, in particular to a long-acting and durable aluminum alloy surface treatment agent. Background technique [0003] There are many surface treatment methods for aluminum alloys, such as physical methods, chemical methods, physicochemical methods, and comprehensive methods. The commonly used method is anodic oxidation method, which forms a conversion film on the surface of aluminum alloy by electrochemical method. Although this method can improve the long-term and durable performance of aluminum alloy, its ability to adapt to the environment is poor, and the conversion film layer is not uniform enough. It is easy to fall off, and the wear resistance has not been improved. Although the traditional phosphate conversion and chromate passivation surface treatment technology can obtain good results, the waste liquid discharged during the treatment process contains zinc, manganese, nickel...

AI Technical Summary

Problems solved by technology

The commonly used method is anodic oxidation method, which forms a conversion film on the surface of aluminum alloy by electrochemical method. Although this method can improve the long-term and durable performance of aluminum alloy, its ability to adapt to the environment is poor, and the conversion film layer is not uniform enough. It is easy to fall off, and the wear resistance has not been improved. Although the traditional phosphate conversion and chromate passivation surface treatment technology can obtain good results, the waste liquid discharged during the treatment process contains zinc, manganese, nickel, chromium, etc. Carcinogens such as heavy metal ions and sub-long-acting persistent types are very serious to environmental pollution, and metal surface silanization treatment technology is considered to be expected to replace phosphate because it does not involve substances that endanger the environment, the production process has low energy consumption, and the technology has a wide range of applications. Conversion treatment and chromate passivation treatment are the latest development direction of metal surface protection alone