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Antibacterial aluminum alloy and preparation method thereof

A technology for aluminum alloy and aluminum alloy surface, applied in metal material coating process, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems of peeling, poor adhesion of surface coating, increasing process difficulty and production cost, etc. To achieve the effect of improving corrosion resistance

Pending Publication Date: 2021-05-28
ANHUI HONGCHENG OPTO-ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this antibacterial method has obvious disadvantages. First, with the prolongation of use time, the surface coating has poor adhesion, cracking, peeling, etc., thus losing the antibacterial effect.
Moreover, this preparation method is usually designed for heat treatment, which increases the difficulty of the process and the production cost

Method used

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  • Antibacterial aluminum alloy and preparation method thereof
  • Antibacterial aluminum alloy and preparation method thereof
  • Antibacterial aluminum alloy and preparation method thereof

Examples

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preparation example Construction

[0037] The application provides a method for preparing an antibacterial aluminum alloy, wherein the surface of the aluminum alloy is treated with hydroxylation, so that the number of hydroxyl groups on the surface is greatly improved, and the nano-TiO 2 deposition sites on its surface. Further, the antibacterial liquid is modified nano-TiO 2 solution, modified nano-TiO 2 Contains a large number of hydroxyl groups, when modified nano-TiO 2 When the solution is applied to the aluminum alloy surface, the modified nano-TiO 2 The contained hydroxyl groups chemically react with the abundant hydroxyl groups on the surface of the aluminum alloy, thereby transforming the nano-TiO 2 Chemically grafted onto the surface of the aluminum alloy substrate, the antibacterial particles can be more firmly combined with the substrate. Such as figure 1 Shown, the preparation method that the application provides comprises:

[0038] Preparation of modified nano-TiO containing hydroxyl groups ...

Embodiment 1

[0063] This implementation prepares an antibacterial aluminum alloy, and the specific steps are as follows:

[0064] 1. Preparation of modified nano-TiO 2 Solution:

[0065] 1) Mix 10 parts of butyl titanate, 7 parts of diethanolamine, and 200 parts of ethanol, and stir with a stirrer for 40 minutes at a stirring speed of 450 rpm to obtain a yellow clear solution A;

[0066] 2) 90 parts of water and 110 parts of ethanol were mixed and stirred at a stirring speed of 450 rpm, and stirred for 15 minutes to obtain solution B;

[0067] 3) Slowly add solution B to the stirred solution A, keep the solution temperature at 50°C, and continue to stir for 45 minutes to obtain nano-TiO 2 solution;

[0068] 4) Take 4 parts of sodium silicate and add to nano TiO 2 solution and stirred for 45 minutes; then added 400 parts of silane and stirred evenly to keep the pH at 8-9, and continued to stir for 25 minutes to obtain the product.

[0069] 2. Preparation of surface activated aluminum a...

Embodiment 2

[0079] This implementation prepares an antibacterial aluminum alloy, and the specific steps are as follows:

[0080] 1. Preparation of modified nano-TiO 2 Solution:

[0081] 1) Mix 25 parts of butyl titanate, 10 parts of diethanolamine, and 150 parts of ethanol, and stir with a stirrer for 50 minutes at a stirring speed of 450 rpm to obtain a yellow clear solution A;

[0082] 2) 100 parts of water and 120 parts of ethanol were mixed and stirred at a stirring speed of 450 rpm, and stirred for 20 minutes to obtain solution B;

[0083] 3) Slowly add solution B to the stirred solution A, keep the solution temperature at 60°C, and continue to stir for 45 minutes to obtain nano-TiO 2 solution;

[0084] 4) Take 5 parts of sodium silicate and add it to nano TiO 2 solution and stirred for 45 minutes; then added 500 parts of silane and stirred evenly to keep the pH at 8-9, and continued to stir for 30 minutes to obtain the product.

[0085] 2. Preparation of surface activated aluminu...

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Abstract

The invention provides antibacterial aluminum alloy and a preparation method thereof. The preparation method of the antibacterial aluminum alloy comprises the following steps that a modified nano TiO2 solution containing hydroxyl is prepared; hydroxylation treatment is conducted on the surface of the aluminum alloy, so that surface-activated aluminum alloy is prepared; and the modified nano TiO2 solution is coated onto the surface layer of the surface-activated aluminum alloy to prepare the antibacterial aluminum alloy. According to the method, hydroxylation treatment is conducted on the surface of the aluminum alloy, nano TiO2 can be chemically grafted onto the surface of the aluminum alloy to form a film layer with the long-acting antibacterial performance, and the antibacterial problem of the surface of the aluminum alloy is effectively solved; and the nano TiO2 can be firmly combined with the aluminum alloy for a long time, and the long-acting antibacterial performance and the service life of the antibacterial film layer are guaranteed. And meanwhile, the corrosion resistance of the aluminum alloy is greatly improved.

Description

technical field [0001] The application belongs to the technical field of surface functional materials, and in particular relates to an antibacterial aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloys are widely used in various fields and occasions such as medical treatment, food, industry, construction, shipbuilding and aerospace. With the increasing number of incidents caused by global bacterial and viral infections, antimicrobial hygiene management has received great attention from the society. However, conventional aluminum alloys have no antibacterial and bactericidal capabilities, and cannot prevent the adhesion, spreading and growth of bacteria. Therefore, in the environment of use, bacteria are particularly easy to breed and multiply on the surface, thereby infecting diseases. At the same time, the attachment of microorganisms to the surface of the aluminum alloy will cause the surface oxide layer to be destroyed, and pitt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/24C23C26/00C09D1/00C09D5/14
CPCC25D11/246C23C26/00C09D1/00C09D5/14
Inventor 任娜娜张培祺莫业鹏周辉
Owner ANHUI HONGCHENG OPTO-ELECTRONICS CO LTD
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