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Method for preparing titanium dioxide/copper nano composite antibacterial coating on surface of aluminum material

A titanium dioxide and compound antibacterial technology, applied in coatings, anodizing, electrolytic coatings, etc., can solve the problems of limited use, no antibacterial properties, poor corrosion resistance, etc. The effect of excellent corrosion resistance

Inactive Publication Date: 2011-03-30
SHENYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating obtained by this method has good wear resistance and interfacial bonding force, but poor corrosion resistance, antibacterial property can only be presented in aqueous solution or humid environment, and does not have antibacterial property in dry light environment. Therefore, this The scope of application of this coating is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A method for preparing titanium dioxide / copper nanocomposite antibacterial coating on the surface of an aluminum material is as follows:

[0012] 1. First, pre-treat the aluminum specimen, including mechanical polishing to 1000# sandpaper, degreasing and removing the natural oxide film. Then, the pretreated smooth and clean aluminum specimen was immersed in oxalic acid solution for anodic oxidation to obtain a porous anodic oxidation film. The oxalic acid anodizing process is as follows: the oxalic acid content is 27 g / L, the temperature is 17° C., the current density is 5 mA / cm2 (direct current), the treatment time is 30 minutes, and mechanical stirring is performed. Afterwards, the aluminum anodized film is immersed in a phosphoric acid solution for hole expansion and barrier layer removal. The processing parameters of hole expansion and barrier layer removal are: phosphoric acid 55 g / L, temperature 35° C., and time 30 minutes. Finally, the aluminum anodic oxide fil...

Embodiment 2

[0015] A method for preparing titanium dioxide / copper nanocomposite antibacterial coating on the surface of an aluminum material is as follows:

[0016] 1. First, pre-treat the aluminum specimen, including mechanical polishing to 1000# sandpaper, degreasing and removing the natural oxide film. Then, the pretreated smooth and clean aluminum specimen was immersed in oxalic acid solution for anodic oxidation to obtain a porous anodic oxidation film. The oxalic acid anodizing process is as follows: the oxalic acid content is 27 g / L, the temperature is 17° C., the current density is 5 mA / cm2 (direct current), the treatment time is 30 minutes, and mechanical stirring is performed. Afterwards, the aluminum anodized film is immersed in a phosphoric acid solution for hole expansion and barrier layer removal. The processing parameters of hole expansion and barrier layer removal are: phosphoric acid 55 g / L, temperature 35° C., and time 30 minutes. Finally, the aluminum anodic oxide fil...

Embodiment 3

[0019] A method for preparing titanium dioxide / copper nanocomposite antibacterial coating on the surface of an aluminum material is as follows:

[0020] 1. First, pre-treat the aluminum specimen, including mechanical polishing to 1000# sandpaper, degreasing and removing the natural oxide film. Then, the pretreated smooth and clean aluminum specimen was immersed in sulfuric acid solution for anodic oxidation to obtain a porous anodic oxidation film. The sulfuric acid anodic oxidation process is as follows: the sulfuric acid content is 12%, the current density is 5 mA / cm2, the temperature is 17° C., the treatment time is 30 minutes, and mechanical stirring is performed. Afterwards, the aluminum anodized film is immersed in a phosphoric acid solution for hole expansion and barrier layer removal. The processing parameters of hole expansion and barrier layer removal are: phosphoric acid 55 g / L, temperature 35° C., and time 30 minutes. Finally, the aluminum anodic oxide film after...

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Abstract

The invention relates to a method for preparing a titanium dioxide / copper nano composite antibacterial coating on the surface of an aluminum material and provides a method for preparing a titanium dioxide / copper nano composite antibacterial coating on the surface of an aluminum anode oxidation film by nano composite plating technology. The method comprises the following steps of: firstly, preparing the aluminum anode oxidation film in solution of sulfuric acid or oxalic acid; secondly, soaking the aluminum anode oxidation film in phosphoric acid and chambering so as to remove a barrier layer; and lastly, electrically depositing nano titanium dioxide particles and copper metal in a film hole. The coating obtained by the method has high antibacterial property, strong interface bonding force, high corrosion resistance and high wearing resistance.

Description

technical field [0001] The invention relates to a method for preparing a nanocomposite antibacterial coating on the surface of a material, in particular to a method for preparing a titanium dioxide / copper nanocomposite antibacterial coating in the micropores of an aluminum anodized film by nanocomposite plating technology. Background technique [0002] Antibacterial materials are composed of antibacterial agents and carrier materials. Compared with organic antibacterial agents, inorganic antibacterial agents have the characteristics of durability, safety and broad-spectrum antibacterial, and have broad market prospects. Considering the antibacterial effect and personal safety, the most widely used inorganic antibacterial agents are copper and silver antibacterial agents and the photocatalytic anatase titanium dioxide antibacterial agent that has developed rapidly in the past decade. Titanium dioxide has an antibacterial effect as long as it is under weak light, while copper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/08C25D15/00
Inventor 贺春林梁骁才庆魁
Owner SHENYANG UNIV
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