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Preparation method of composite antibacterial coating aluminum foil

A composite antibacterial and aluminum foil technology, applied in coatings, devices for coating liquid on surfaces, anti-corrosion coatings, etc., can solve problems such as the increase in the incidence of infectious diseases, and achieve improved hydrophilicity, improved efficiency, and high adsorption efficiency Effect

Pending Publication Date: 2021-03-26
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the regional development, there is an uncoordinated problem. The city is densely populated and high-rise buildings are row upon row. Accompanied by this, the proliferation of bacteria is also accelerated, and the incidence of infectious diseases increases.

Method used

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  • Preparation method of composite antibacterial coating aluminum foil
  • Preparation method of composite antibacterial coating aluminum foil
  • Preparation method of composite antibacterial coating aluminum foil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Take 60ml of absolute ethanol as a solvent, add 7.5ml of butyl titanate as a titanium source, add 3.6ml of glacial acetic acid to control the acidity of the solution, add 0.45g of polyvinylpyrrolidone as a dispersant, and then add 1ml of acetylacetone as a Hydrolysis inhibitor, stirred until a uniform and transparent light yellow A solution was obtained.

[0032] (2) 20ml of ethanol and 3.6ml of deionized water are miscible as a solvent, 0.375g of silver nitrate is added thereto, 0.113g of anhydrous citric acid is added as a stabilizer, and after 0.3ml of nitric acid is added dropwise, stir until transparent and colorless B solution.

[0033] (3) Add solution B dropwise to solution A at a rate of 15 drops per minute with a separatory funnel, and stir for 2 hours to obtain stable TiO 2 / Ag composite sol.

[0034] (4) the obtained TiO in (3) 2 The / Ag composite sol was placed in an ultrasonic environment of 80 Hz for 1.5 h, and then placed for 48 h to age the sol. ...

Embodiment 2

[0038] (1) Take 60ml of absolute ethanol as a solvent, add 9ml of butyl titanate as a titanium source, add 4.5ml of glacial acetic acid to control the acidity of the solution, add 0.18g of polyvinylpyrrolidone as a dispersant, and then add 1.5ml of acetylacetone as a Hydrolysis inhibitor, stirred until a uniform and transparent light yellow A solution was obtained.

[0039] (2) 20ml of ethanol and 4.3ml of deionized water are miscible as a solvent, 0.225g of silver nitrate is added thereto, 0.113g of anhydrous citric acid is added as a stabilizer, and after 0.75ml of nitric acid is added dropwise, stir until transparent and colorless B solution.

[0040] (3) Add solution B dropwise to solution A at a rate of 8 drops per minute with a separatory funnel, and stir for 1 hour to obtain stable TiO 2 / Ag composite sol.

[0041] (4) the obtained TiO in (3) 2 The / Ag composite sol was placed in an ultrasonic environment of 60 Hz for 1 h, and then placed for 72 h to age the sol.

...

Embodiment 3

[0045] (1) Take 60ml of absolute ethanol as a solvent, add 7.5ml of butyl titanate as a titanium source, add 3.6ml of glacial acetic acid to control the acidity of the solution, add 0.45g of polyvinylpyrrolidone as a dispersant, and then add 1ml of acetylacetone as a Hydrolysis inhibitor, stirred until a uniform and transparent light yellow A solution was obtained.

[0046] (2) 20ml of ethanol and 3.6ml of deionized water are miscible as a solvent, 0.375g of silver nitrate is added thereto, 0.113g of anhydrous citric acid is added as a stabilizer, and after 0.3ml of nitric acid is added dropwise, stir until transparent and colorless B solution.

[0047](3) Add solution B dropwise to solution A at a rate of 15 drops per minute with a separatory funnel, and stir for 2 hours to obtain stable TiO 2 / Ag composite sol.

[0048] (4) the obtained TiO in (3) 2 The / Ag composite sol was placed in an ultrasonic environment of 80 Hz for 1.5 h, and then placed for 48 h to age the sol. ...

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Abstract

The invention discloses a preparation method of a composite antibacterial coating aluminum foil. The preparation method comprises the following steps that a titanium source, a dispersing agent and a pH regulator for controlling solution to be acidic are added into an anhydrous alcohol solution, then a hydrolysis inhibitor is added, and a solution A is obtained after stirring is carried out; a silver source and a silver ion stabilizer are added into a mixed solution of alcohol and water, and a solution B is obtained after stirring is carried out; the solution B is dropwise added into the solution A, a TiO2 / Ag composite sol is obtained after stirring is carried out, and aging treatment is carried out; and a porous aluminum foil is coated with the TiO2 / Ag composite sol by using a spin-coatingmethod, and the composite antibacterial coating aluminum foil is obtained after drying. According to the method disclosed by the invention, tiny antibacterial ions are deposited into holes of the porous aluminum foil, so that the binding force of a film layer and the aluminum foil is stronger, and the adsorption efficiency is higher; and meanwhile, the silver ion stabilizer is used for preventingsilver salt and organic matters from reacting to form precipitates to destroy the steady state of the sol, so that the composite film is high in stability.

Description

technical field [0001] The invention relates to a preparation method of coated aluminum foil, in particular to a preparation method of composite antibacterial coated aluminum foil. Background technique [0002] In recent decades, the level of human industrialization and informatization has made an unprecedented leap, but the living environment is gradually deteriorating. Problems such as air pollution and water pollution are becoming more and more serious. However, with the regional development, there are problems of inconsistency. The cities are densely populated and high-rise buildings are row upon row. Along with this, the reproduction of bacteria is also accelerated, and the incidence of infectious diseases increases. These viruses and bacteria are not only highly prolific, but they can also attach to different surfaces. Therefore, it is urgent to develop safe and reliable antibacterial materials. [0003] Aluminum is widely used in transportation, machinery and other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D7/14B05D7/24C09D1/00C09D5/14C09D5/10
CPCB05D5/00B05D7/14B05D7/24C09D1/00C09D5/14C09D5/10B05D2202/25
Inventor 薛烽王会一黄宇峰张越白晶周健
Owner SOUTHEAST UNIV
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