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Aluminum alloy dyeing pretreatment agent and pretreatment method

A pre-dyeing treatment and aluminum alloy technology, which is applied in the field of aluminum alloys, can solve the problems of acid residue cleaning, low product yield, uneven dyeing, etc., and achieve the effects of reducing corrosion, preventing uneven dyeing, and uniform color

Active Publication Date: 2021-03-02
东莞市新东明科技有限公司
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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] A pretreatment agent for aluminum alloy dyeing, comprising the following raw materials in parts 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 agent .

[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 agent includes the following raw materials in parts 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 adopting the above-mentioned aluminum alloy dyeing pretreatment agent comprises the following steps:

[0027] (1) Put the anodized aluminum alloy workpiece in the pretreatment agent for pretreatment and then wash it with water;

[0028] (2) The pretreated aluminum alloy ...

Embodiment 2

[0033] A pretreatment agent for aluminum alloy dyeing, comprising the following raw materials in parts 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 parts of surfactant and 1 part of functional auxiliary agent .

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

[0035] Further, each part of the functional auxiliary agent includes the following raw materials in parts 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 adopting the above-mentioned aluminum alloy dyeing pretreatment agent comprises the following steps:

[0037] (1) Put the anodized aluminum alloy workpiece in the pretreatment agent for pretreatment and then wash it with water;

[0038] (2) The pretreated aluminum alloy ...

Embodiment 3

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

[0044] Further, the surfactant is composed of sodium monoglyceride disulfate and sodium dioctyl sulfosuccinate in a weight ratio of 1:2.

[0045] Further, each part of the functional auxiliary agent includes the following raw materials in parts 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 adopting the above-mentioned aluminum alloy dyeing pretreatment agent comprises the following steps:

[0047] (1) Put the anodized aluminum alloy workpiece in the pretreatment agent for pretreatment and then wash it with water;

[0048] (2) The pretreated al...

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Abstract

The invention relates to the technical field of aluminum alloy, in particular to an aluminum alloy dyeing pretreatment agent and pretreatment method. The aluminum alloy dyeing pretreatment agent is prepared from 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 sodium potassium tartrate, 0.5-1.5 partsof a surfactant and 1-2 parts of a functional additive. The dyeing pretreatment agent can be used for aluminum alloy anodic oxidation dyeing pretreatment, the dyeing efficiency and uniformity can beremarkably improved, the dyeing effect is improved, and the product yield is increased. The aluminum alloy dyeing pretreatment method using the aluminum alloy dyeing pretreatment agent is easy and convenient to operate and easy to control, the dyeing efficiency and uniformity can be remarkably improved, the dyeing effect and the product yield are improved, an aluminum alloy dyed workpiece with uniform color and good appearance effect can be obtained, and the method is suitable for industrial mass 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 well used. The existing technology often uses anodizing and dyeing processes to improve the durability and decorative effect of aluminum alloys for electronic products. 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. Pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/16
CPCC25D11/16
Inventor 况金权
Owner 东莞市新东明科技有限公司
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