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Anodic oxidation antibacterial metal part and preparation method thereof

An anodic oxidation and antibacterial metal technology, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve problems such as limited use occasions, hindering metal exposure on metal surfaces, and reduced corrosion resistance, reaching the application field Large size, wide application range, guaranteed dyeing efficiency

Inactive Publication Date: 2021-07-20
深圳吉美瑞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment method greatly hinders the exposure of silver, copper, zinc and other metals on the metal surface, and their bactericidal function is difficult to reflect, and finally can only show the antibacterial and self-cleaning function of nano-titanium dioxide
What's more, because the antibacterial and self-cleaning function of nano-titanium dioxide requires certain ultraviolet light irradiation, the application occasions of this kind of antibacterial and self-cleaning metal parts are limited.
In addition, since the porous oxide film formed on the surface of the aluminum alloy after anodic oxidation treatment and electrolytic coloring is mainly boehmite (aluminum oxyhydroxide), the boehmite itself has poor corrosion resistance to strong acid and strong alkali. Sealing will destroy the structure of the oxide film layer, resulting in a decrease in the aesthetics of the aluminum alloy surface, wear resistance, and corrosion resistance.
[0004] None of the current anodized metal parts have anti-virus function

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing an anodic oxidation antibacterial metal part, is characterized in that, comprises the following steps:

[0031] S1) After the surface of the metal part is pretreated by degreasing, alkali corrosion, and solvent cleaning, it is placed in a dilute sulfuric acid electrolyte as an anode, and anodized with electricity, so that a layer of porous honeycomb anodic oxidation is formed on the metal part substrate membrane;

[0032] S2) Prepare nano-silver staining agent with the following components by mass percentage: 1% nano-silver particle antibacterial liquid, 1.2% acid wool element, 0.2% acid lake blue, 1% aluminum sulfate, 0.5% ammonium sulfate, and 1.6% alizarin dye %, pure water 94.5%. After cleaning the above-mentioned metal piece containing the porous honeycomb anodized film, soak it in the nano-silver staining agent for dyeing for 10 minutes, so that the dyed molecules and nano-silver particles are fully adsorbed in the pores of the anodized fil...

Embodiment 2

[0035] A method for preparing an anodic oxidation antibacterial metal part, is characterized in that, comprises the following steps:

[0036] S1) After degreasing and degreasing the surface of the metal part, alkali corrosion, solvent cleaning, and chemical polishing pretreatment, put it in the oxalic acid electrolyte as the anode, and conduct anodic oxidation treatment with electricity to form a layer of porous honeycomb on the metal part substrate Anodized film;

[0037]S2) Prepare nano-silver staining agent with the following components by mass percentage: 0.8% nano-silver particle antibacterial solution, 1.5% direct fast blue, 0.6% acid lake blue, 1% cobalt acetate, 0.8% potassium chromate, alizarin Red 1.5%, pure water 94.8%. After cleaning the above-mentioned metal piece containing the porous honeycomb anodic oxide film, soak it in the nano-silver staining agent for dyeing for 15 minutes, so that the dyed molecules and nano-silver particles are fully adsorbed in the por...

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Abstract

The invention discloses an anodic oxidation antibacterial metal part and a preparation method thereof. The anodic oxidation antibacterial metal part comprises a metal piece substrate, an anodic oxidation film, a nano-silver dyeing layer and a nano-silver hole sealing layer, and the anodic oxidation film is obtained by conducting anodic oxidation on the metal piece substrate; the nano-silver dyeing layer is obtained by loading a nano-silver dyeing agent on the anodic oxide film, the nano-silver hole sealing layer is obtained by loading a nano-silver hole sealing agent on the dyeing layer, in the nano-silver dyeing agent and the nano-silver hole sealing agent, the proportion of nano-silver particle antibacterial liquid is 0.01-3%, and the size of nano-silver particles is 0.1-30 nm. The anodic oxidation antibacterial metal part has the advantages of lasting antibacterial and antiviral properties, wear resistance, corrosion resistance, decoration and the like, and in addition, the preparation method of the anodic oxidation antibacterial metal part is simple in process, safe, environmental-friendly, low in cost and suitable for large-scale industrial production and market application.

Description

technical field [0001] The invention relates to the field of metal surface treatment, in particular to an anodized antibacterial metal part and a preparation method thereof. Background technique [0002] With the continuous development of science and technology and the improvement of people's quality of life, the performance requirements for metal parts are also constantly increasing. In order to overcome the defects of surface hardness and wear resistance of metal parts, expand the scope of application and prolong the service life, surface treatment technology has become an indispensable part in the use of metal parts, and anodic oxidation technology is the most widely used and most successful . Anodic oxidation refers to the process of forming an oxide film on a metal part (anode) under the corresponding electrolyte and specific process conditions due to the action of an applied current. Anodized metal parts are widely used in various fields such as machinery, communicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/24
CPCC25D11/243C25D11/246
Inventor 程乐志陈冬梅
Owner 深圳吉美瑞科技有限公司
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