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Preparation method of black dyestuff for dyeing aluminum alloy and dyeing method of aluminum alloy

A technology of black dye and dyeing method, which is applied in the preparation of black dye for aluminum alloy dyeing and in the field of aluminum alloy dyeing, and can solve the problems such as dyeing difficult aluminum alloys into black

Active Publication Date: 2017-06-20
GUANGDONG EVERWIN PRECISION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it is difficult to dye aluminum alloys black with traditional dyes

Method used

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  • Preparation method of black dyestuff for dyeing aluminum alloy and dyeing method of aluminum alloy
  • Preparation method of black dyestuff for dyeing aluminum alloy and dyeing method of aluminum alloy
  • Preparation method of black dyestuff for dyeing aluminum alloy and dyeing method of aluminum alloy

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preparation example Construction

[0024] See figure 1 A method for preparing a black dye for dyeing aluminum alloy according to an embodiment includes the following steps S110 to S130.

[0025] S110. Dissolve red and black dyes, cyan dyes, and red dyes in a solvent to obtain a mixed solution, wherein the concentration of the red and black dyes in the mixed solution is 1.0 g / L~2.0 g / L, and the blue and green dyes are in the mixed solution The concentration of the red dye is 1.0g / L~1.5g / L, and the concentration of the red dye in the mixed solution is 0.5g / L~1.0g / L.

[0026] According to the total volume of black dyes for aluminum alloy dyeing to be configured, red-black dyes, blue-green dyes and red dyes can be added to obtain a mixed solution. Specifically, the solvent of the black dye for dyeing aluminum alloy may be water.

[0027] In this embodiment, red and black dyes, cyan dyes, and red dyes are dissolved in water to obtain a mixed solution, wherein the concentration of the red and black dyes in the mixed soluti...

Embodiment 1

[0052] Preparation of black dye for dyeing aluminum alloy

[0053] Dissolve Okuno Dye 402, Okuno Dye 411, and Okuno Dye 102 in water to obtain a mixed solution, wherein the addition amount of Okuno Dye 402 is 1.5g / L, the addition amount of Okuno Dye 411 is 1.25g / L, and Okuno Dye 102 is added The amount is 0.75g / L. Add NaOH to adjust the pH of the mixed solution to 5.25. And 12.5g / L of ammonium chloride was added to the mixed solution, and the black dye for aluminum alloy dyeing was obtained after mixing.

Embodiment 2

[0055] Preparation of black dye for dyeing aluminum alloy

[0056] Dissolve Okuno Dye 402, Okuno Dye 411, and Okuno Dye 102 in water to obtain a mixed solution. The addition amount of Okuno Dye 402 is 1.0g / L, the addition amount of Okuno Dye 411 is 1.0g / L, and the addition amount of Okuno Dye 102 is 1.0g / L. Add NaOH to adjust the pH of the mixed solution to 5.0. 10g / L of sodium acetate was added to the mixed solution to obtain a black dye for dyeing aluminum alloy.

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Abstract

The invention discloses a preparation method of a black dyestuff for dyeing an aluminum alloy and a method for dyeing the aluminum alloy by adopting the black dyestuff. The prepared black dyestuff comprises 1.0g / L to 2.0g / L of a reddish black dyestuff, 1.0g / L to 1.5g / L of a bluish green dyestuff and 0.5g / L to 1.0g / L of a red dyestuff. The inventor accidentally finds out that the black dyestuff, which is formed by mixing the reddish black dyestuff, the bluish green dyestuff and the red dyestuff according to the ratio, regulating the pH (Potential of Hydrogen) value to 5.0 to 5.5, and adding 10g / L to 15g / L of a pH stabilizer, is more suitable for dyeing of the aluminum alloy than a traditional black dyestuff and the aluminum alloy can be easily dyed black. Especially, when the aluminum alloy subjected to anode oxidation is dyed, the mixed black dyestuff can easily dye the aluminum alloy to black with a stable color and coloring durability.

Description

Technical field [0001] The invention relates to the technical field of dyes, in particular to a method for preparing black dyes for dyeing aluminum alloys and a method for dyeing aluminum alloys. Background technique [0002] Most metals are substances with metallic luster, but except for gold and copper, other metals have only primary colors, which makes the color of alloys formed by metals limited, and it is difficult to meet the diversified requirements of electronic products such as mobile phone shells, computer shells and frames . Among them, black is one of the important indicators for distinguishing dyeing methods. At present, the main black coloring method in my country's manufacturing industry is mainly organic dyeing. Organic dyes are generally divided into water-soluble dyes and oil-soluble dyes, and most of the dyes currently in use are water-soluble organic dyes. [0003] However, it is difficult to dye aluminum alloy black with traditional dyes. Summary of the inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/22C25D11/24C25D11/08C25D11/10
CPCC09B67/0033C09B67/0083C25D11/08C25D11/10C25D11/243
Inventor 王天宇周尤尚张波
Owner GUANGDONG EVERWIN PRECISION TECH
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