A kind of volcanic ash aluminum alloy surface treatment agent

Abstract

The invention discloses a volcanic ash aluminum alloy surface treatment agent, which is composed of the following raw materials in parts by weight: volcanic ash 0.2-0.4, polyvinyl butyral 1-2, permethrin 0.1-0.3, boric acid 2- 3.5, titanium dioxide 0.1-0.6, polytetrafluoroethylene 0.6-1, dimethylaminopropylamine 1-1.4, diacetone alcohol 2.4-3, calcium fluoride 0.4-0.7, coconut acid diethanolamide 0.5-1, diphenyl Base imidazoline 0.4-1, film-forming aid 1-4, silane coupling agent KH580 13-20, deionized water 100-130, the volcanic ash added in the surface treatment agent of the present invention can effectively improve the strength of the coating film And anti-leakage, the compound use of various raw materials has good heat absorption performance, making aluminum products have a longer life when used at high temperatures.

Description

technical field [0001] The invention mainly relates to the field of surface treatment, in particular to a volcanic ash aluminum alloy surface treatment agent. Background technique [0002] 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 corrosion resistance of aluminum alloy, its ability to adapt to the environment is poor, and the conversion film layer is not uniform enough and easy to fall off. , the wear resistance has not been improved, and the traditional phosphate conversion and chromate passivation surface treatment technology can obtain good results, but the waste liquid discharged during the treatment process contains heavy metal ions such as zinc, manganese, nickel, chromium, etc....

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 corrosion resistance of aluminum alloy, its ability to adapt to the environment is poor, and the conversion film layer is not uniform enough and easy to fall off. , the wear resistance has not been improved, and the traditional phosphate conversion and chromate passivation surface treatment technology can obtain good results, but the waste liquid discharged during the treatment process contains heavy metal ions such as zinc, manganese, nickel, chromium, etc. Carcinogens such as volcanic ash and sub-volcanic ash are very serious to the environment, and the metal surface silanization treatment technology is considered to be expected to replace phosphate conversion treatment and chromic acid because it does not involve substances that are harmful to the environment, the production process has low energy consumption, and the technology has a wide range of applications. Salt passivation treatment is the latest development direction of metal surface protection alone