A kind of aluminum alloy dyeing pretreatment agent and pretreatment method

A technology of pre-dyeing and aluminum alloy application in the field of aluminum alloy, which can solve the problems of residual cleaning of acidic substances, low product yield, and difficulty in coloring, etc., and achieve the effects of complete removal, reduced surface corrosion, and high removal efficiency

Active Publication Date: 2022-06-17
广东东明新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to actual application requirements, existing aluminum alloy workpieces often need to be connected with other workpieces, and aluminum alloy workpieces are often provided with channels or through holes. There are usually tiny pores and defects in the flux area and channels or through holes. During the oxidation process, it is easy to cause acid residues and incomplete cleaning, resulting in uneven dyeing, blooming, corrosion spots and other defects. The product yield is low. Production brings inconvenience, and its product yield rate is low, which needs further improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An aluminum alloy dyeing pretreatment agent, comprising the following raw materials by weight: 28 parts of citric acid, 8 parts of salicylic acid, 4 parts of sodium citrate, 3 parts of potassium sodium tartrate, 1 part of surfactant and 1.5 parts of functional auxiliary .

[0024] Further, the surfactant is composed of sodium monoglyceride disulfate and sodium lauryl sulfate in a weight ratio of 1:2.

[0025] Further, each part of the functional auxiliary includes the following raw materials by weight: 8 parts of polyvinyl alcohol, 3 parts of sodium acetate, 6 parts of glycerin, and 4 parts of polydimethylsiloxane.

[0026] The aluminum alloy dyeing pretreatment method using the above-mentioned aluminum alloy dyeing pretreatment agent comprises the following steps:

[0027] (1) The anodized aluminum alloy workpiece is placed in a pretreatment agent for pretreatment, and then washed with water;

[0028] (2) The pretreated aluminum alloy workpiece is placed in an aqueou...

Embodiment 2

[0033] An aluminum alloy dyeing pretreatment agent, comprising the following raw materials by weight: 25 parts of citric acid, 6 parts of salicylic acid, 3 parts of sodium citrate, 2 parts of potassium sodium tartrate, 0.5 part of surfactant and 1 part of functional auxiliary .

[0034] Further, the surfactant is composed of sodium lauryl sulfate and sodium diisooctyl succinate sulfonate in a weight ratio of 1:2.

[0035] Further, each part of the functional auxiliary includes the following raw materials by weight: 8 parts of polyvinyl alcohol, 3 parts of sodium acetate, 6 parts of glycerin, and 4 parts of polydimethylsiloxane.

[0036] The aluminum alloy dyeing pretreatment method using the above-mentioned aluminum alloy dyeing pretreatment agent comprises the following steps:

[0037] (1) The anodized aluminum alloy workpiece is placed in a pretreatment agent for pretreatment, and then washed with water;

[0038] (2) The pretreated aluminum alloy workpiece is placed in an ...

Embodiment 3

[0043] An aluminum alloy dyeing pretreatment agent, comprising the following raw materials by weight: 25-30 parts of citric acid, 12 parts of salicylic acid, 5 parts of sodium citrate, 4 parts of potassium and sodium tartrate, 1.5 parts of surfactant and functional auxiliary 2 servings.

[0044] Further, the surfactant is composed of sodium monoglyceride disulfate and sodium diisooctyl succinate sulfonate according to a weight ratio of 1:2.

[0045] Further, each part of the functional auxiliary includes the following raw materials by weight: 10 parts of polyvinyl alcohol, 4 parts of sodium acetate, 8 parts of glycerin, and 5 parts of polydimethylsiloxane.

[0046] The aluminum alloy dyeing pretreatment method using the above-mentioned aluminum alloy dyeing pretreatment agent comprises the following steps:

[0047] (1) The anodized aluminum alloy workpiece is placed in a pretreatment agent for pretreatment, and then washed with water;

[0048] (2) The pretreated aluminum all...

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Abstract

The invention relates to the technical field of aluminum alloys, in particular to an aluminum alloy dyeing pretreatment agent and a pretreatment method. The aluminum alloy dyeing pretreatment agent includes the following raw materials in parts by weight: 25-30 parts of citric acid, 6-12 parts of salicylic acid, 3-5 parts of sodium citrate, 2-4 parts of potassium sodium tartrate and 0.5 parts of surfactant ‑1.5 parts and 1‑2 parts of functional additives. The pre-dyeing treatment agent of the present invention can be used for anodic oxidation dyeing pre-treatment of aluminum alloy, can remarkably improve dyeing efficiency and uniformity, and improve dyeing effect and product yield. The aluminum alloy dyeing pretreatment method using the aluminum alloy dyeing pretreatment agent is easy to operate and easy to control, which can significantly improve the dyeing efficiency and uniformity, improve the dyeing effect and product yield, and help to obtain aluminum alloy dyed workpieces with uniform color and good appearance , suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to an aluminum alloy dyeing pretreatment agent and a pretreatment method. Background technique [0002] With the development of society and the advancement of science and technology, aluminum alloys have been increasingly used in good applications. In the prior art, anodizing and dyeing processes are often used to improve the durability and decorative effect of aluminum alloys in electronic products. However, due to the actual application requirements, the existing aluminum alloy workpieces often need to be connected with other workpieces. The aluminum alloy workpieces are often provided with channels or through holes, and there are often tiny pores and defects in the flux area and the channels or through holes. During the oxidation process, it is easy to cause acid residues and incomplete cleaning, resulting in uneven dyeing, blooming, corrosion points and other undesirable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/16
CPCC25D11/16
Inventor 况金权
Owner 广东东明新材科技有限公司
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