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

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...

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