Forming solution for environment-friendly non-phosphate ceramic film and preparation method and application thereof

An environmentally friendly, ceramic film technology, applied in the direction of metal material coating process, etc., can solve the problems of heavy environmental pollution, poor adhesion between protective film and primer, plastic powder, poor adhesion, etc., to achieve good adhesion and low cost. The effect of low cost and simplified production process

Active Publication Date: 2013-07-03
HUAWEI TEHCHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in the prior art, in some metal surface coating treatment technologies,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] a) The film-forming agent is prepared as potassium fluozirconate 35% (mass fraction, the same below), fluoride ion stabilizer 15%, and the rest is water;

[0024] b) The additives are formulated as film-forming aid sodium molybdate 6%, film regulator tannic acid 0.5%, chelating agent oxalic acid 2%, buffering agent diethanolamine 2%, cleaning agent sodium dodecylbenzene sulfonate 0.5% , and the rest are all water;

[0025] c) Add 800g of clear water to the treatment tank, weigh 5g of the film-forming agent prepared in step a and dissolve it in the treatment tank, and add 35g of the additive prepared in step b while stirring to obtain solution A;

[0026] d) Add pH adjuster (ammonium bicarbonate powder) to solution A while stirring. After adjusting the pH, add water to the treatment tank to 1000g to obtain solution B, which is the vitrified film forming solution. The pH of the solution is 2.5.

[0027] Soak metal magnesium directly in solution B, take it out after 30s, ...

Embodiment 2

[0029] a) The film-forming agent is prepared as 30% sodium fluozirconate, 14% nitrate ion stabilizer, and the rest is water;

[0030] b) The additives are formulated as film-forming aid sodium fluoride 6%, film regulator citric acid 0.5%, chelating agent oxalic acid 2%, buffering agent hydroxylamine hydrochloride 2%, cleaning agent sodium lauryl sulfate 0.5%, and the rest are for water;

[0031] c) Add 800 g of clear water to the treatment tank, weigh 10 g of the film-forming agent prepared in step a and dissolve it in the treatment tank, and add 30 g of the additive prepared in step b while stirring to obtain solution A;

[0032] d) Add a pH adjuster (ammonium carbonate powder) to solution A while stirring. After adjusting the pH, add water to the treatment tank to 1000g to obtain solution B, which is the vitrified film forming solution. The pH of the solution is 3.0 at this time;

[0033] Soak the Z275 galvanized steel sheet directly in the solution B, take it out after 60s...

Embodiment 3

[0035] a) The film-forming agent is prepared as 28% potassium fluozirconate, 13% fluoride ion stabilizer, and the rest is water;

[0036] b) The additives are formulated as film-forming aid sodium molybdate 7%, film regulator tannic acid 2%, chelating agent EDTA 3%, buffering agent diethanolamine 3%, cleaning agent sodium dodecylbenzene sulfonate 0.8%, the rest is water;

[0037] c) Add 800g of clear water into the treatment tank, weigh 15g of the film-forming agent prepared in step a and dissolve it in the treatment tank, and add 25g of the additive prepared in step b while stirring to obtain solution A;

[0038] d) Add a pH adjuster (ammonium carbonate powder) to solution A while stirring. After adjusting the pH, add water to the treatment tank to 1000g to obtain solution B, which is the vitrified membrane forming solution. The pH of the solution is 3.5 at this time;

[0039] Soak commercially available 1050-type aluminum alloy plate directly in solution B, take it out afte...

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Abstract

The invention relates to a forming solution for an environment-friendly non-phosphate ceramic film and a preparation method and an application thereof. The forming solution mainly comprises the following substances: 0.5-3.5 percent of film-forming agent and 0.5-3.5 percent of additive, wherein the film-forming agent comprises 20-35 percent of zircon titanium salt, 10-15 percent of stabilizer and the balance of water; and the additive comprises 6-10 percent of coalescing agent, 0.5-6 percent of film regulator, 2-8 percent of chelating agent, 2-8 percent of buffer agent, 0.5-2 percent of cleaning agent and the balance of water. Under a certain process condition, the PH value of the forming solution is regulated to be within 2.5-5.5, and then metal is processed by adopting the impregnating, sprinkling and other methods, so that a layer of purple blue ceramic film with variable thickness can be formed on the surface. The preparation technology of the ceramic film can be implemented at ordinary temperature, the treatment is convenient, phosphate, nickel, manganese and other contamination ions, as well as waste residue precipitation, are avoided in the preparation process, and the preparation technology is a new environment-friendly and energy-saving ceramic film synthesizing method.

Description

technical field [0001] The invention relates to the field of metal surface coating treatment, in particular to a process for forming a chemical conversion film on the surface of a metal material. Background technique [0002] Metal materials usually face many corrosion problems in industrial application environments, which lead to material corrosion failure. In order to endow metal materials with certain anti-corrosion properties, the industry generally adopts surface coating treatment on metals to increase the anti-corrosion properties of metal materials, especially for metal substrates that are widely used in industries such as auto parts, hardware and home appliances. [0003] Surface treatment must be carried out before metal coating. At present, the pre-coating treatment of metal materials is usually divided into two treatment methods: phosphorus-containing and phosphorus-free. Existing phosphorus-containing treatment refers to the use of phosphating agents to carry ou...

Claims

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Application Information

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IPC IPC(8): C23C22/44C23C22/46
Inventor 潘太军汪涛张保李杰
Owner HUAWEI TEHCHNOLOGIES CO LTD
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