Antibacterial functionalizing-corrosion-resistant modification method for aluminum alloy surface

A technology for surface and functionalization of aluminum alloys, applied in the field of aluminum alloys, can solve the problems of changes in the structure and composition of aluminum alloys, limited antibacterial components, and easy peeling of coatings, and achieves the effect of improving corrosion resistance.

Inactive Publication Date: 2019-06-07
姜水英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial modification method of aluminum alloy mainly includes the preparation of alloy type antibacterial aluminum alloy and the antibacterial modification of aluminum alloy surface. The common method of modification is to coat the surface of aluminum alloy with antibacterial coating, but the coating is easy to fall off, which restricts the use of this method

Method used

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  • Antibacterial functionalizing-corrosion-resistant modification method for aluminum alloy surface

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Embodiment 1

[0026] A method for antibacterial functionalization-corrosion-resistant modification of the surface of an aluminum alloy, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0027] (1) Pretreatment method of aluminum alloy surface:

[0028] The aluminum alloy was polished with sandpaper, cleaned ultrasonically in acetone, rinsed with absolute ethanol and deionized water in sequence, chemically etched for 30 minutes after polishing, heated in a sodium hydroxide solution at 60°C for 30 seconds, and then heated in an oxalic acid electrolyte. Carry out anodic oxidation for 25 minutes in the medium, then ultrasonically clean with absolute ethanol and deionized water for 10 minutes respectively, take it out and dry it in the air, put the aluminum alloy with clean surface into 40°C deionized water, seal it with a plastic wrap and keep it warm for 5 minutes, take it out and dry it in the air Dry hot water treated...

Embodiment 2

[0041] A method for antibacterial functionalization-corrosion-resistant modification of the surface of an aluminum alloy, characterized in that it comprises the following steps, and the following raw materials are calculated by weight:

[0042] (1) Pretreatment method of aluminum alloy surface:

[0043]The aluminum alloy was polished with sandpaper, cleaned ultrasonically in acetone, rinsed with absolute ethanol and deionized water in sequence, chemically etched for 40 minutes after polishing, heated in a sodium hydroxide solution at 65°C for 20 seconds, and then heated in an oxalic acid electrolyte. Anodize in a medium for 35 minutes, then ultrasonically clean with absolute ethanol and deionized water for 20 minutes respectively, take it out and dry it in the air, put the aluminum alloy with clean surface into 80°C deionized water, seal it with a plastic wrap and keep it warm for 3 minutes, then take it out and dry it in the air Dry hot water treated surface activated aluminu...

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Abstract

The invention discloses an antibacterial functionalizing-corrosion-resistant modification method for the aluminum alloy surface. The aluminum alloy after the hot water processing and surface activating is soaked in the quaternary ammonium salt solution and then taken out, the dehydration coupling reaction is conducted in a heat insulation box, the obtained product is taken out, carried out still standing, soaked and rinsed in the ethanol solution and the deionized water, and the obtained product is taken out, and dried to obtain the surface graft antibacterial aluminum alloy; and the obtainedsurface graft antibacterial aluminum alloy is immersed in the titanium fluoride modified silane conversion solution, the obtained product is taken out after deposition, the surface residue liquid is absorbed with the water absorbing paper, the obtained product is dried to obtain the aluminum alloy through the surface composite transformation, the aluminum alloy through the surface composite transformation is placed in the polyethylene imine solution, still standing in the water, washing, and natural drying are conducted, then the obtained product is soaked in the graphene oxide solution, washed with a large amount of deionized water, dried with the cold air, then soaked in the chitosan-acetic acid water solution, washed with a large amount of deionized water, and dried with the cold wind,and self-assembling circulating is conducted in the graphene oxide solution and the chitosan-acetic acid water solution alternately and circularly.

Description

technical field [0001] The invention belongs to the field of aluminum alloys, and in particular relates to a method for antibacterial functionalization-corrosion-resistant modification of the surface of aluminum alloys. Background technique [0002] As a light metal, aluminum alloy is also widely used in a wide range of fields. The surface of aluminum alloy is particularly easy to form an oxide film to protect the aluminum alloy. However, when the oxide film is permanently damaged, the problem of poor corrosion resistance of aluminum alloy is also a problem. It stands out. [0003] Aluminum alloy has excellent properties, so it is widely used in many industries. The aluminum oxide film on the surface of the aluminum alloy can effectively protect the aluminum alloy substrate from further oxidation and corrosion, but it cannot resist the attachment and reproduction of bacteria. Bacteria attached to the aluminum alloy surface will pollute the aluminum alloy and adversely affec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/34C23C22/82C23C22/78C25F3/04
Inventor 姜水英
Owner 姜水英
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