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Preparation method of black aluminum alloy dye and aluminum alloy dyeing method thereof

A dyeing method and technology of aluminum alloy are applied in the field of preparation of black aluminum alloy dyes, which can solve the problems of being difficult to achieve at the same time, and achieve the effects of fast dyeing speed and good UV resistance.

Active Publication Date: 2020-09-04
柏安美创新科技 (广州) 有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the black aluminum alloy dyes currently on the market are often difficult to meet the above requirements at the same time

Method used

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  • Preparation method of black aluminum alloy dye and aluminum alloy dyeing method thereof
  • Preparation method of black aluminum alloy dye and aluminum alloy dyeing method thereof
  • Preparation method of black aluminum alloy dye and aluminum alloy dyeing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of preparation method of black aluminum alloy dye, comprises the following steps:

[0033] (1) Acid Black 26:2, Acid Black 27 and dyeing aids are pulverized and mixed uniformly to obtain a mixture; wherein, the weight ratio of acid black 26:2, acid black 27 and dyeing aids in the mixture is 77:15 :8; the dyeing assistant is made up of sodium acetate, sodium sulfate and dextrin with a weight ratio of 0.5:1.1:1;

[0034] (2) dissolving in water to the mixture obtained in step (1) to obtain a mixed solution whose concentration is 0.1g / L;

[0035] (3) Add sodium hydroxide or acetic acid to the mixed solution obtained in step (2), adjust the pH value to 5.0, and add a pH stabilizer to obtain the black aluminum alloy dye; the pH stabilizer is sodium acetate, The concentration is 8g / L.

[0036] The method for dyeing aluminum alloys, specifically, soaking the anodized and water-washed aluminum alloys in the black aluminum alloy dye obtained by the above-mentioned prepa...

Embodiment 2

[0041] A kind of preparation method of black aluminum alloy dye, comprises the following steps:

[0042] (1) Acid Black 26:2, Acid Black 27 and dyeing aids are pulverized and mixed uniformly to obtain a mixture; wherein, the weight ratio of acid black 26:2, acid black 27 and dyeing aids in the mixture is 55:25 : 20; Described dyeing assistant is made up of sodium acetate, sodium sulfate and dextrin that weight ratio is 1.2:0.8:1;

[0043] (2) dissolve in water to the mixture that step (1) obtains, obtain the mixed solution that concentration is 12g / L;

[0044] (3) Add sodium hydroxide or acetic acid to the mixed solution obtained in step (2), adjust the pH value to 6.5, and add a pH stabilizer to obtain the black aluminum alloy dye; the pH stabilizer is ammonium chloride , the concentration is 15g / L.

[0045] The method for dyeing aluminum alloys, specifically, soaking the anodized and water-washed aluminum alloys in the black aluminum alloy dye obtained by the above-mention...

Embodiment 3

[0050] A kind of preparation method of black aluminum alloy dye, comprises the following steps:

[0051] (1) Acid Black 26:2, Acid Black 27 and dyeing aids are pulverized and mixed uniformly to obtain a mixture; wherein, the weight ratio of acid black 26:2, acid black 27 and dyeing aids in the mixture is 70:20 : 10; the dyeing aid is composed of sodium acetate, sodium sulfate and dextrin with a weight ratio of 1:1:1;

[0052] (2) dissolve in water to the mixture that step (1) obtains, obtain the mixed liquor that concentration is 10g / L;

[0053] (3) Add sodium hydroxide or acetic acid to the mixed solution obtained in step (2), adjust the pH value to 5.0, and add a pH stabilizer to obtain the black aluminum alloy dye; the pH stabilizer is sodium acetate, The concentration is 10g / L.

[0054] The method for dyeing aluminum alloys, specifically, soaking the anodized and water-washed aluminum alloys in the black aluminum alloy dye obtained by the above-mentioned preparation method...

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Abstract

The invention discloses a preparation method of a black aluminum alloy dye and an aluminum alloy dyeing method thereof. The preparation method comprises the following steps: (1) crushing a black dye and a dyeing assistant and carrying out uniform mixing to obtain a mixture; (2) dissolving the mixture obtained in the step (1) in water to obtain a mixed solution; and (3) adjusting the pH value of the mixed solution obtained in the step (2) to 5.0-6.5, and adding a pH stabilizer to obtain the black aluminum alloy dye, wherein the dyeing assistant in the step (1) is prepared from sodium acetate, anhydrous sodium sulphate and dextrin. According to the dyeing method, aluminum alloy having undergone anodic oxidation and water washing is soaked in the black aluminum alloy dye obtained through thepreparation method for dyeing. Compared with the prior art, the prepared black aluminum alloy dye is high in dyeing speed and good in UV resistance.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy dyes, and in particular relates to a preparation method of black aluminum alloy dyes and an aluminum alloy dyeing method thereof. Background technique [0002] Aluminum has good plasticity, sufficient reserves, and can be recycled. It is widely used in various industries. There is only one original color of aluminum, which is difficult to meet people's requirements for product appearance, such as the diversification of mobile phone casings and luggage color requirements. There are currently three methods of coloring aluminum materials: electrolytic coloring, chemical dyeing and natural coloring. Among them, chemical dyeing is to oxidize the aluminum material and then dye it with dye. The currently used dyes include organic dyes and inorganic dyes, wherein the organic dyes make the aluminum material develop color through physical adsorption or chemical adsorption. Black organic dyes are o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/22C25D11/24
CPCC09B67/0034C25D11/243
Inventor 陈国良罗兆棠蔡少霞
Owner 柏安美创新科技 (广州) 有限公司
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