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Aluminum alloy treating agent before application

A technology of pre-coating treatment agent and aluminum alloy, applied in the field of treatment agent, can solve the problems that the performance of traditional passivation cannot be achieved, can not meet the large-scale production, etc., and achieves simple use process, short treatment time, and improved bonding force. and the effect of corrosion resistance

Active Publication Date: 2013-05-08
SERVICE CENT OF COMMLIZATION OF RES FINDINGS HAIAN COUNTY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, although the chromium-free passivation technology of aluminum alloy has made positive progress, and most of the products on the existing market have also met the environmental protection requirements, these products have not yet reached the traditional passivation performance in terms of matching performance with subsequent coatings. performance, especially in coating adhesion and overall corrosion resistance, cannot meet the requirements of large-scale production

Method used

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  • Aluminum alloy treating agent before application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of aluminum alloy coating pretreatment agent, is made up of the raw material of following mass concentration:

[0033] Nickel Fluoride 9 g / L

[0034] Cobalt acetate 7 g / L

[0035] Ferric ammonium oxalate 4 g / L

[0036] 2-Sulphophenylpropionic acid 2 g / L

[0037] 4-Sulphophthalic acid 2 g / L

[0038] Crude anthracene 0.35 g / L

[0039] water balance

Embodiment 2

[0041] A kind of aluminum alloy coating pretreatment agent, is made up of the raw material of following mass concentration:

[0042] Nickel fluoride 8 g / L

[0043] Cobalt acetate 8 g / L

[0044] Ferric ammonium oxalate 3 g / L

[0045] 2-sulfophenylpropionic acid 3 g / L

[0046] 4-Sulphophthalic acid 1 g / L

[0047] Crude anthracene 0.5 g / L

[0048] water balance

Embodiment 3

[0050] A kind of aluminum alloy coating pretreatment agent, is made up of the raw material of following mass concentration:

[0051] Nickel Fluoride 10 g / L

[0052] Cobalt acetate 6 g / L

[0053] Ferric ammonium oxalate 5 g / L

[0054] 2-sulfophenylpropionic acid 1 g / L

[0055] 4-Sulphophthalic acid 3 g / L

[0056] Crude anthracene 0.2 g / L

[0057] water balance

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Abstract

The invention discloses an aluminum alloy treating agent before application, which is prepared from the following raw materials in mass concentration: 8-10 g / L nickelous fluoride, 6-8 g / L cobalt acetate, 3-5 g / L ferric ammonium oxalate, 1-3 g / L 2-sulfophenylpropionic acid, 1-3 g / L 4-sulfo-o-phthalic acid, 0.2-0.5 g / L crude anthracene and the balance of water. The aluminum alloy treating agent before application is non-toxic and environment-friendly, is free of hexavalent chrome heavy metal ions, has excellent properties, and can greatly enhance the binding force of the aluminum alloy with the coating and the corrosion resistance of the aluminum alloy. The treating agent disclosed by the invention has the advantages of simple use technique and short treatment time, and is convenient for large-scale practical production.

Description

technical field [0001] The invention relates to a metal surface treatment agent, in particular to a treatment agent used for the pre-treatment of aluminum alloy coating for the purpose of improving coating adhesion and corrosion resistance. Background technique [0002] Aluminum alloy has been widely used in various industries due to its small specific gravity, good electrical and thermal conductivity, excellent mechanical properties, and easy processing and forming. However, the oxide film formed by itself in the natural environment is difficult to resist environmental corrosion. Corrosion happens all around us every moment. [0003] The main method currently used for pre-treatment of aluminum alloy coating is chromate passivation method. After the aluminum alloy material is passivated, it can enhance its corrosion resistance and adhesion with the coating, and improve its corrosion resistance. The process is simple, low cost, good film bonding, high corrosion resistance, ...

Claims

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Application Information

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IPC IPC(8): C23C22/46
Inventor 郑家园
Owner SERVICE CENT OF COMMLIZATION OF RES FINDINGS HAIAN COUNTY