Abrasion-resistant and scraping-resistant aluminum alloy chromium-free passivating agent and preparation method thereof

A chromium-free passivation agent, aluminum alloy technology, applied in the direction of metal material coating process, etc., can solve the problems of limited application, poor corrosion resistance and adhesion, and achieve reduced wear, good corrosion resistance, and good wear resistance. performance effect

Inactive Publication Date: 2016-02-10
HEFEI HAIYUAN MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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] A wear-resistant and scratch-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, polyepoxysuccinic acid 1, sodium gluconate 4, sodium fluoride 1, 65% nitric acid 1, swire oil 1, simethicone 1, 40% polyethylene Wax emulsion 50, film-forming aid 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 ...

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PUM

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Abstract

The invention discloses an abrasion-resistant and scraping-resistant aluminum alloy chromium-free passivating agent and a preparation method thereof. The passivating agent is prepared from, by weight, 5-10 parts of 30-40% hexafluorotitanic acid, 5-10 parts of 40-45% hexafluorozirconic acid, 1-2 parts of polyepoxysuccinic acid, 4-6 parts of sodium gluconate, 1-2 parts of sodium fluoride, 1-2 parts of 65-70% nitric acid, 1-2 parts of Turkey red oil, 1-2 parts of simethicone, 50-100 parts of 40-50% polyethylene wax emulsion, 50-100 parts of coalescing agents and 800-1000 parts of water. According to the aluminum alloy passivating agent, a compact film of a net structure can be formed on the surface of aluminum alloy, excellent strength, tenacity and adhesive capacity are achieved, and the corrosion resistance is good; meanwhile, good abrasion resistance is achieved, abrasion and scraping on the surface of the aluminum alloy can be reduced, environment pollution can be reduced, and good economic benefits and social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy passivation, in particular to a wear-resistant and scratch-resistant 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 treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/34
Inventor 沈四海沈军
Owner HEFEI HAIYUAN MACHINERY
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