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Antibacterial and mouldproof aluminum alloy chromium-free passivation agent and preparation method thereof

A chromium-free passivator, antibacterial and antifungal technology, applied in the coating process of metal materials, etc., can solve the problems of limited application, corrosion resistance and poor adhesion, and achieve smoothness, good corrosion resistance and excellent strength Effect

Inactive Publication Date: 2016-02-24
安徽家园铝业有限公司
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AI Technical Summary

Problems solved by technology

Among them, titanium-zirconium-based passivation technology has the advantages of simple process, good stability and low cost, but its corrosion resistance and adhesion are not as good as chromate passivation treatment, which limits its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] An antibacterial and mildew-resistant aluminum alloy chromium-free passivator, which is made from the following raw materials in parts by weight:

[0015] 40% Fluorotitanic Acid 5, 40% Fluorozirconic Acid 5, Borax 0.1, Sodium Fluoride 1, 65% Nitric Acid 1, Cocoyl Diethanolamine 0.5, Sodium Benzoate 1, Chitosan 0.3, Disodium EDTA 5. Coalescing agent 50, water 800;

[0016] Wherein the film-forming aid is made of the following raw materials in parts by weight: polyvinyl alcohol 1, bisphenol A type epoxy resin 10, glyceryl monostearate 0.5, acrylic acid 4, carbon nanotube 1, ethylene glycol butyl ether 10 , diethanolamine 5, dibenzoyl peroxide 0.2, water 60; the preparation method of film-forming aid is to add polyvinyl alcohol, bisphenol A type epoxy resin and glyceryl monostearate into the reaction vessel and stir at 85°C 4h, first add ethylene glycol butyl ether and stir at 120°C until it melts, then add dibenzoyl peroxide, acrylic acid and carbon nanotubes and react a...

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Abstract

The invention discloses an antibacterial and mouldproof aluminum alloy chromium-free passivation agent. The antibacterial and mouldproof aluminum alloy chromium-free passivation agent is prepared by the following raw materials in parts by weight: 5-10 of 30-40% hexafluorotitanic acid, 5-10 of 40-45% hexafluorozirconic acid, 0.1-0.2 of borax, 1-2 of sodium fluoride, 1-2 of 65-70% nitric acid, 0.5-1 of coconut diethanolamide, 1-2 of sodium benzoate, 0.3-0.5 of chitosan, 5-10 of ethylenediaminetetraacetic acid disodium salt, 50-100 of film coalescing aid, and 800-1000 of water. The aluminum alloy passivation agent can form a compact film having a netty structure on the surface of an aluminum alloy, is excellent in strength, toughness, adhesive ability and corrosion resistance, has antibacterial and mouldproof effects, can prevent the moulding of the aluminum alloy to guarantee the surface smoothness and the color durability of the aluminum alloy, can reduce the environmental pollution, and is excellent in economic benefit and social benefit.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy passivation, in particular to an antibacterial and antifungal aluminum alloy chromium-free passivator and a preparation method thereof. Background technique [0002] Aluminum alloys have many excellent properties and are widely used in many fields such as transportation, packaging containers, aerospace, household appliances, machinery manufacturing, building profiles, and electronic communications. However, aluminum alloys have poor corrosion resistance, wear resistance, and hardness, and are easily corroded during use. Therefore, aluminum profiles must undergo effective surface treatment before coating to avoid or reduce corrosion. [0003] As the most commonly used aluminum alloy surface treatment technology, chromate passivation treatment has the advantages of convenient use, low price, good corrosion resistance and decorative performance, but the hexavalent chromium in the treatment sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/68
Inventor 张永光张广勋沈勇薛龙祁仁华
Owner 安徽家园铝业有限公司
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