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Method for manufacturing metal surface self-cleaning high-protection film

A metal surface, self-cleaning technology, applied in the direction of metal material coating process, etc., to achieve the effect of reducing direct contact, enhancing the protection effect, and preventing corrosion damage

Active Publication Date: 2014-12-17
重庆中昆新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the difficulties and problems existing in the prior art, the purpose of the present invention is to provide a green, environmentally friendly, simple and convenient preparation method to realize the preparation of self-cleaning, high-protective film layers on metal surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The pure zinc workpiece with clean surface shall be treated as follows in sequence:

[0028] ① Molybdate solution immersion treatment: immerse the clean pure zinc workpiece in 70°C sodium molybdate aqueous solution for 2 hours, then take out the workpiece, wash and dry;

[0029] ②Plant corrosion inhibitor-low surface energy material synergistic modification treatment: soak the workpiece treated in step ① in the modification treatment solution at room temperature for 1 hour, take it out and dry it at 60°C for 2 hours to obtain a pure zinc surface Self-cleaning, high protective film layer;

[0030] The content of described sodium molybdate is 2.5 g / L;

[0031] The modified treatment solution is prepared by dissolving plant corrosion inhibitors and low surface energy substances in ethanol solution;

[0032] The plant corrosion inhibitor is the water extract powder of Linopodium leaves, with a content of 0.5 g / L; its preparation process is: take the fresh leaves of Rosace...

Embodiment 2

[0039] The pure copper workpiece with clean surface is processed as follows in sequence:

[0040] ①Molybdate solution immersion treatment: immerse the clean pure copper workpiece in 90°C ammonium molybdate aqueous solution for 3 hours, then take out the workpiece, wash and dry;

[0041] ②Plant corrosion inhibitor-low surface energy material synergistic modification treatment: Soak the workpiece treated in step ① in the modification treatment solution at room temperature for 1.5 hours, take it out and dry it at 90°C for 1 hour to obtain a pure copper surface Self-cleaning, high protective film layer;

[0042] The content of described ammonium molybdate is 1 g / L;

[0043] The modified treatment solution is prepared by dissolving plant corrosion inhibitors and low surface energy substances in ethanol solution;

[0044] The plant corrosion inhibitor is water extract powder of Linopodium leaves, the content is 0.2 g / L; its preparation process is: take the fresh leaves of Rosaceae a...

Embodiment 3

[0048] The 2024 aluminum alloy workpiece with clean surface is subjected to the following treatments in sequence:

[0049] ①Molybdate solution immersion treatment: immerse the clean 2024 aluminum alloy workpiece in 80°C ammonium molybdate aqueous solution for 1 hour, then take out the workpiece, wash and dry it;

[0050] ②Plant corrosion inhibitor-low surface energy material synergistic modification treatment: soak the workpiece treated in step ① in the modification treatment solution at room temperature for 2 hours, take it out and dry it at 80°C for 1.5 hours to obtain 2024 aluminum alloy Surface self-cleaning, high protective film layer;

[0051] The content of described ammonium molybdate is 5 g / L;

[0052] The modified treatment solution is prepared by dissolving plant corrosion inhibitors and low surface energy substances in ethanol solution;

[0053] The plant corrosion inhibitor is water extract powder of Linopodium leaves, with a content of 0.6 g / L; its preparation ...

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Abstract

The invention provides a method for manufacturing a metal surface self-cleaning high-protection film. The method comprises two steps of molybdate solution soaking treatment and plant corrosion inhibitor-low-surface-energy material collaborative modification treatment. According to the molybdate solution soaking treatment step, a composite film which is of a specific micro / nano coarse structure, has the good protection effect and is composed of metallic oxides, molybdenum oxide and metal molybdate can be formed on a metal surface, and therefore according to the plant corrosion inhibitor-low-surface-energy material collaborative modification treatment step, efficient green plant corrosion inhibitors can be introduced into the film, and the protection effect can be obviously improved. Due to the hydrophobization effect of the low-surface-energy material on the film, the film has the self-cleaning function, the pollution can be avoided, the probability of direct contact of metal materials and corrosive media can be reduced, and the protection effect of the film can be further improved. The method has the advantages of being environmentally friendly, simple in process, convenient to operate, capable of being easily and industrially produced in a large-scale mode and the like.

Description

technical field [0001] The invention belongs to the technical field of metal material surface treatment, and in particular relates to a method for preparing a metal surface self-cleaning and high-protection film layer. [0002] Background technique [0003] Metals and alloys such as zinc, copper, aluminum, and steel are widely used in many fields, but due to their relatively active chemical properties, they are prone to corrosion during application. In order to effectively inhibit the corrosion of these metals and prolong their service life, it is usually necessary to carry out certain surface treatments on them, such as chemical conversion, anodic oxidation, etc. It provides protection and can also effectively improve the adhesion between the coating and the alloy surface. However, in applications where the environment is relatively harsh, there will be a large amount of rainwater and dust deposited on the metal surface and it is difficult to clean and remove in time. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/40C23F11/00
Inventor 雷惊雷李凌杰许雯婷何建新邹茂华潘复生
Owner 重庆中昆新材料科技有限公司
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