Passivation solution for improving cementing performance of zinc-aluminum-magnesium plated steel and preparation method of passivation solution

A passivation solution, zinc-aluminum-magnesium technology, applied in the field of passivation solution, can solve the problems of bonding failure, insufficient coating adhesion, toxic and environmental protection, etc., achieve good adhesion points, improve bonding performance, and improve mechanical properties Effect

Active Publication Date: 2021-07-20
SHOUGANG CORPORATION
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then the magnesium-aluminum element of the zinc-aluminum-magnesium alloy coating is easily oxidized in the air, and the aluminum oxide film produced by the aluminum element is relatively inert, while the magnesium oxide produced by the magnesium element is converted into magnesium carbonate and basic magnesium carbonate, etc. The derivative product is unstable and loose and porous on the surface of the alloy. When the adhesive is in contact with the zinc-aluminum-magnesium-plated steel surface, it will be adsorbed on these loose and porous substances, resulting in insufficient adhesion of the glue to the coating, and finally the bonding failure
And the traditional chromate-based inorganic passivation solution is toxic and not environmentally friendly

Method used

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  • Passivation solution for improving cementing performance of zinc-aluminum-magnesium plated steel and preparation method of passivation solution
  • Passivation solution for improving cementing performance of zinc-aluminum-magnesium plated steel and preparation method of passivation solution
  • Passivation solution for improving cementing performance of zinc-aluminum-magnesium plated steel and preparation method of passivation solution

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preparation example Construction

[0037] The preparation method of a passivation solution provided by the embodiment of the present invention has the following advantages:

[0038] (1) The inorganic material prepared in the embodiment of the present invention——fluorozirconate ion intercalated magnesium-zinc-aluminum ternary hydrotalcite, the interlayer anion fluozirconate ion has the ability to exchange, when the magnesium element on the surface of the alloy generates magnesium carbonate When the corrosion product is loose and porous, the fluozirconate ion will replace the carbonate, and the fluozirconate ion will combine with the magnesium ion to form a stable chelation product, which protects the surface of the coating and reduces the generation of loose and porous products. When combined with the adhesive When in contact, the mechanical properties of stretching and peeling are greatly improved, thereby improving the bonding performance of zinc-aluminum-magnesium-plated steel.

[0039] (2) Inorganic material...

Embodiment 1

[0062] This embodiment provides a passivation solution for improving the bonding performance of zinc-aluminum-magnesium-plated steel and a preparation method thereof. The specific operations are as follows:

[0063] 1. Preparation of inorganic materials:

[0064] 5 parts of Zn(NO 3 ) 2 ·6H 2 O, 5 parts of Mg(NO 3 ) 2 ·6H 2 O and 5 parts Al(NO 3 ) 3 9H 2 O was dissolved in 50 parts of deionized water to form a homogeneous solution (referred to as solution A) at room temperature under an inert atmosphere.

[0065] At room temperature under an inert atmosphere, 3 parts of NaOH and 5 parts of H 8 f 6 N 2 Zr was dissolved in 50 parts of deionized water to make solution B (deionized water was boiled to remove dissolved carbon dioxide and kept at 25°C for use).

[0066] The solution A and the solution B were simultaneously added dropwise into a beaker containing 100 parts of deionized water until the pH of the final mixture was adjusted to 8.

[0067] The resulting mixtu...

Embodiment 2

[0073] This embodiment provides a passivation solution for improving the bonding performance of zinc-aluminum-magnesium-plated steel and a preparation method thereof. The specific operations are as follows:

[0074] (1) Preparation of inorganic materials:

[0075] 5 parts of Zn(NO 3 ) 2 ·6H 2 O, 5 parts of Mg(NO 3 ) 2 ·6H 2 O and 5 parts Al(NO 3 ) 3 9H 2 O was dissolved in 00 parts deionized water to form a homogeneous solution (referred to as solution A) at room temperature under an inert atmosphere.

[0076] At room temperature under an inert atmosphere, 5 parts of NaOH and 10 parts of H 8 f 6 N 2 Zr was dissolved in 100 parts of deionized water to make solution B (deionized water was boiled to remove dissolved carbon dioxide and kept at 30°C for use).

[0077] The solution A and the B were simultaneously added dropwise into a beaker containing 150 parts of deionized water until the pH of the final mixture was adjusted to 9. The resulting mixture was stirred (at...

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Abstract

The embodiment of the invention discloses a passivation solution for improving the cementing performance of zinc-aluminum-magnesium plated steel and a preparation method of the passivation solution. The method comprises the steps of obtaining a zinc-magnesium-aluminum ternary salt solution; dissolving ammonium fluozirconate and an alkaline solution in deionized water, and performing reaction in an inert atmosphere to obtain a solution B; dropwise adding the zinc-magnesium-aluminum ternary salt solution and the solution B into deionized water until the pH value is 7.5 to 9 to obtain a mixture; performing stirring, crystallization and solid-liquid separation on the mixture to obtain an inorganic material; uniformly mixing a silane coupling agent, a surfactant and deionized water for reaction to obtain organic material liquid; and uniformly mixing the inorganic material liquid and the organic material liquid according to the weight ratio of (1-2):(10-20) to obtain the passivation solution for improving the cementing performance of the zinc-aluminum-magnesium plated steel. According to the embodiment of the invention, the passivation solution is prepared in an organic and inorganic composite mode, and the cementing performance of the zinc-aluminum-magnesium plated steel can be improved.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of passivation solution, in particular to a passivation solution for improving the bonding performance of zinc-aluminum-magnesium-plated steel and a preparation method thereof. Background technique [0002] Zinc-magnesium-aluminum coated steel is an alloy technology with excellent comprehensive performance since its development, because its corrosion resistance is much higher than that of pure zinc and zinc-aluminum alloy, and it has strong adhesion, long service life, simple manufacturing process, and at the same time Steel plate cut protection performance, is widely used in the automobile industry, electrical industry and construction industry. [0003] With the rapid development of the people's economy, the automobile industry has formed a considerable manufacturing industry in China. The number of automobiles in the country is increasing, and energy conservation and emission red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/68C23C22/60
CPCC23C22/68C23C22/60C23C2222/20
Inventor 刁鑫林赵晓非黎敏姚士聪郝玉林龙袁曹建平蔡宁杨建炜
Owner SHOUGANG CORPORATION
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