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Surface treatment agent for anodic oxidation coating of dyed aluminum or aluminum alloy, surface treatment method using same, sealing treatment method, and article

A surface treatment agent and surface treatment technology, applied in the direction of surface reaction electrolytic coatings, coatings, electrolytic coatings, etc., can solve the problems of no research, no research, color fading, etc., to achieve fading inhibition, excellent dyeing fixity, The effect of excellent light fastness

Active Publication Date: 2021-05-11
OKUNO CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Patent Document 1, there is no study on a method of dyeing an anodized film with a dye, such as a method of immersing the anodized film in an aqueous dye solution containing a dye.
In addition, in Patent Document 1, there is no study on the improvement of dyeing fixability in the dyeing treatment using the above-mentioned dyes.
[0005] In addition, in Patent Document 1, there is no study on imparting light resistance to an anodized coating after dyeing treatment with a dye.
As mentioned above, when the anodized film is dyed with a dye, there is a problem that the color of the dye fades and the color becomes lighter by exposure to light such as ultraviolet rays.

Method used

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  • Surface treatment agent for anodic oxidation coating of dyed aluminum or aluminum alloy, surface treatment method using same, sealing treatment method, and article
  • Surface treatment agent for anodic oxidation coating of dyed aluminum or aluminum alloy, surface treatment method using same, sealing treatment method, and article
  • Surface treatment agent for anodic oxidation coating of dyed aluminum or aluminum alloy, surface treatment method using same, sealing treatment method, and article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0124] Each of the anodized-dyed test pieces made using the dyes shown in Tables 1 and 2 was mixed with 0.4 g of metal oxide salt containing 1.2 g / L of ammonium fluorozirconate, 1 g / L of glycine, and 0.4 g of fluorine-free metal oxide salt. / L and adjusted to pH 2.5 with nitric acid in a surface treatment agent (bath temperature: 45° C.) for 3 minutes, followed by water washing to perform surface treatment. Next, it was immersed in a sealing treatment agent (bath temperature: 92° C.) consisting of an aqueous solution of pH 5.7 containing 40 ml / L of Okuno Pharmaceutical Co., Ltd. Top Seal H-298 for 15 minutes, washed with water, and dried.

Embodiment 6

[0126] Except that no fluorine-free metal oxide salt was added, in the same manner as in Examples 1 to 5, the anodized-dyed test piece was subjected to surface treatment, dipped in a sealing treatment agent, and washed with water. and dry.

Embodiment 7

[0128] The pH of the surface treatment solution was adjusted to 3.0, except that, in the same manner as in Examples 1 to 5, the anodized-dyed test piece was surface-treated, immersed in a sealing treatment agent, washed with water and dry.

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Abstract

The present invention provides a surface treatment agent and a surface treatment method capable of improving the light resistance of an anodized film of aluminum or an aluminum alloy dyed with a dye and improving the fixability of dyeing. The present invention provides a surface treatment agent for an anodized coating of dyed aluminum or aluminum alloy, characterized in that it contains fluorozirconate and has a pH of 3.4 or less.

Description

technical field [0001] The present invention relates to a surface treatment agent for dyed aluminum or aluminum alloy anodized film, a surface treatment method using the same, a hole sealing treatment method and an article. Background technique [0002] Anodized coatings are formed on light metals such as aluminum and aluminum alloys, and are used for various purposes. Such an anodized film formed on aluminum or the like is required to have properties such as corrosion resistance depending on the application, and surface treatment is performed in order to impart these properties. [0003] As a surface treatment method for imparting corrosion resistance and designability to an anodized film formed on a light metal as described above, a surface treatment method including: a step of forming an anodized film on a light metal or an alloy thereof; Then, the process of immersing this in the aqueous solution containing a water-soluble compound, such as a water-soluble zirconium com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/18
CPCC25D11/18
Inventor 原健二森口朋杉冈骏
Owner OKUNO CHEM IND CO LTD
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