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Antibacterial and antiviral aluminum alloy and preparation method thereof

An aluminum alloy, anti-virus technology, used in coatings, pretreated surfaces, paints containing biocides, etc., can solve the problem of uneven control of powder spraying amount and powder spraying time, too thick coating film thickness, unable to provide antibacterial effect and other problems to achieve the effect of inhibiting growth and reproduction

Inactive Publication Date: 2020-11-24
南京同曦同康抗菌材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Although electrostatic powder spraying can endow aluminum alloys with better appearance and practicability, there are still many defects in the process of electrostatic powder spraying: a) The powder particles produced during the powder spraying process cause particles to be mixed into the coating; b) Electrostatic Low voltage leads to low powder coating rate of powder coating; c) Dirty pre-treatment degreasing or damp powder coating causes coating shrinkage; d) Uneven control of powder spraying amount and spraying time, resulting in excessive coating thickness Thick or too thin; e) uneven distribution of powder pigments, curing temperature or coating thickness, causing color difference; f) the coating film after spraying is prone to orange peel or bubbling; g) pre-treatment washing is not clean or the curing temperature Not enough, resulting in poor coating adhesion
Since the existing form of natural antibacterial agents is not stable enough, it is easy to self-degrade during service, and cannot provide long-term and effective antibacterial effects

Method used

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  • Antibacterial and antiviral aluminum alloy and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0073] The present embodiment provides a preparation method of an antibacterial and antiviral aluminum alloy, and the preparation method includes:

[0074] The aluminum alloy substrate surface activation pretreatment, vacuum electrostatic powder spraying treatment and spray coating solidification cooling treatment are carried out in sequence;

[0075] The method for the surface activation pretreatment of the aluminum alloy substrate includes:

[0076] (a) immersing the aluminum alloy body in an alkaline solution with a pH of 11.0 for degreasing treatment for 5 min, and washing with water 3 times to remove surface impurities after the degreasing treatment;

[0077] (b) immersing the washed aluminum alloy substrate in a sodium hydroxide solution with a concentration of 40 g / L, performing an alkalization treatment at a constant temperature of 50°C for 5 minutes, washing with water after the alkalization treatment and drying at 80°C for 30 minutes to obtain Surface activation pre...

Embodiment 2

[0090] The present embodiment provides a preparation method of an antibacterial and antiviral aluminum alloy, and the preparation method includes:

[0091] The aluminum alloy substrate surface activation pretreatment, vacuum electrostatic powder spraying treatment and spray coating solidification cooling treatment are carried out in sequence;

[0092] The method for the surface activation pretreatment of the aluminum alloy substrate includes:

[0093] (a) immersing the aluminum alloy body in an alkaline solution with a pH of 11.0 for degreasing treatment for 5 min, and washing with water 3 times to remove surface impurities after the degreasing treatment;

[0094] (b) immersing the washed aluminum alloy substrate in a sodium hydroxide solution with a concentration of 40 g / L, performing an alkalization treatment at a constant temperature of 50°C for 5 minutes, washing with water after the alkalization treatment and drying at 80°C for 30 minutes to obtain Surface activation pre...

Embodiment 3

[0107] The present embodiment provides a preparation method of an antibacterial and antiviral aluminum alloy, and the preparation method includes:

[0108] The aluminum alloy substrate surface activation pretreatment, vacuum electrostatic powder spraying treatment and spray coating solidification cooling treatment are carried out in sequence;

[0109] The method for the surface activation pretreatment of the aluminum alloy substrate includes:

[0110] (a) immersing the aluminum alloy body in an alkaline solution with a pH of 11.0 for degreasing treatment for 5 min, and washing with water 3 times to remove surface impurities after the degreasing treatment;

[0111] (b) immersing the washed aluminum alloy substrate in a sodium hydroxide solution with a concentration of 40 g / L, performing an alkalization treatment at a constant temperature of 50°C for 5 minutes, washing with water after the alkalization treatment and drying at 80°C for 30 minutes to obtain Surface activation pre...

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Abstract

The invention provides an antibacterial and antiviral aluminum alloy and a preparation method thereof. The aluminum alloy comprises an aluminum alloy matrix and an antibacterial and antiviral coatingarranged on the surface of the aluminum alloy matrix, wherein the antibacterial and antiviral coating comprises the following raw materials in parts by mass: 65-85 parts of resin, 15-25 parts of a filling material, 27.5-42.5 parts of an auxiliary agent, 4-6 parts of powder hydroxide, 1-2 parts of an inorganic antibacterial agent and 1-2 parts of an organic antibacterial agent. The antibacterial and antiviral coating is arranged on the surface of the aluminum alloy, so the antibacterial and antiviral aluminum alloy has excellent antibacterial and antiviral effects; an electrostatic vacuum spraying method used in the preparation method provided by the invention is high in powdering rate and small in coating usage amount, so the coating purchasing cost is reduced; a large amount of waste of coatings in a traditional process is avoided; environmental pollution is reduced; and environmental friendliness and energy conservation are achieved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy surface treatment, and relates to an antibacterial and antiviral aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloy is one of the most widely used metal materials at present. Due to its advantages of low density, high strength and good plasticity, it can be processed into various practical profiles and has been widely used in aircraft, automobiles, electronics and other fields. Electrostatic powder spraying, also known as "electrostatic spraying", is to spray powder coating through a spray gun, and the powder particles are negatively charged by an electrostatic generator, forming an electric field between the electrode and the object to be coated, and these charged particles will be affected by electrostatic attraction. , uniformly dispersed on the surface of the grounded aluminum alloy sample, and then heated, melted and solidified to form an elec...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D167/00C09D5/14C09D7/61B05D7/14B05D3/10B05D1/06B05D3/02
CPCB05D1/06B05D3/0254B05D3/101B05D7/14B05D2202/25B05D2401/32B05D2504/00B05D2508/00C08K2003/2206C08K2003/2224C08K2003/2227C08K2003/2289C08K2003/2296C09D5/14C09D163/00C09D167/00C09D7/61C08L67/00C08K13/02C08K3/22C08L63/00
Inventor 陈广川于红光李梦婷王斐
Owner 南京同曦同康抗菌材料科技有限公司
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