Anodic oxidation antibacterial metal part and preparation method thereof

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...

Examples

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...

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...

Examples

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...