Stable high-adhesive aluminum alloy surface conditioning agent

Abstract

The invention discloses a stable high-adhesive aluminum alloy surface conditioning agent. The agent is composed of the following raw materials in parts by weight: 0.4 to 1 part of calcium hexafluoroacetylacetonate, 0.7 to 1 part of lauryl alcohol phosphoric acid ester potassium, 1 to 2 parts of formamide, 0.5 to 1 part of polyisobutenyl succinimide, 1 to 2 parts of itaconic acid, 0.4 to 1 part of magnesium hydroxide, 1 to 2 parts of N-methylolacrylamide, 0.2 to 0.4 part of mica powder, 0.1 to 0.2 part of tung oil, 0.1 to 0.3 part of triethanolamine borate, 2 to 4 parts of film-forming auxiliary agent, 13 to 20 parts of (3-Aminopropyl)trimethoxysilane, and 120 to 140 parts of deionized water. The added calcium hexafluoroacetylacetonate can effectively improve the stability of the coating, and furthermore, the raw materials are reasonably compounded, so the prepared coating has the advantages of weatherability, acid and alkali resistance, strong salt fog resistant performance, good anti-peeling property, and enduring protection effect on metal tools.

Description

[0001] technical field [0002] The invention mainly relates to the field of surface treatment, in particular to a stable and highly adherent 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 stable and high adhesion 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, ...

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 stable and high adhesion 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 metastable high-adhesion substances are very serious to environmental pollution, and the metal surface silanization treatment technology is considered to be expected to replace phosphate because it does not involve substances harmful to 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