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A kind of non-phosphorus and slag-free normal temperature coating agent

A coating agent, room temperature technology, applied in the field of environmentally friendly non-phosphorus, slag-free and normal temperature coating agents, can solve problems such as harming human health, polluting the environment, toxicity, etc., to save costs, solve pollution problems, and achieve good compactness.

Active Publication Date: 2016-07-06
广东东明新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hexavalent chromium is an extremely toxic and carcinogenic heavy metal ion, which seriously pollutes the environment and endangers human health

Method used

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  • A kind of non-phosphorus and slag-free normal temperature coating agent

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] The components of the phosphorus-free and slag-free normal temperature coating agent are:

[0037] A component is:

[0038] Fluorozirconic acid 40g / L;

[0039] Hydrofluoric acid 400g / L;

[0040] The solvent is water.

[0041] B components are:

[0042] Magnesium nitrate 400g / L;

[0043] Hydrogen peroxide 6g / L;

[0044] The solvent is water.

[0045] Wherein, the mass fraction of fluozirconic acid is 40%, the mass fraction of hydrofluoric acid is 55%, the mass fraction of hydrogen peroxide is 35%, and the magnesium nitrate is magnesium nitrate hexahydrate.

[0046] Take 25gA and 20gB and mix, then add water to 1L, and stir well to get phosphorus-free and slag-free room temperature coating agent solution, control the total acidity to 13.5±0.6 points, and the free acidity to 10±0.4 points.

[0047] First, degrease the surface of the aluminum material to remove the grease and impurities on the surface. After washing twice, put the aluminum material into the above-men...

example 2

[0050] The components of the phosphorus-free and slag-free normal temperature coating agent are:

[0051] A component is:

[0052] Fluorozirconic acid 35g / L;

[0053] Hydrofluoric acid 300g / L;

[0054] The solvent is water.

[0055] B components are:

[0056] Magnesium nitrate 350g / L;

[0057] Hydrogen peroxide 5g / L;

[0058] The solvent is water.

[0059] Get 25gA and 20gB to mix, the preparation and the method of use of non-phosphorus and slag-free normal temperature coating agent solution are the same as example 1. According to the GB / T1771-2007 standard, the neutral salt spray test of the aluminum paint film is carried out, and the test results are shown in the attached table.

example 3

[0061] The components of the phosphorus-free and slag-free normal temperature coating agent are:

[0062] A component is:

[0063] Fluorozirconic acid 36g / L;

[0064] Hydrofluoric acid 260g / L;

[0065] The solvent is water.

[0066] B components are:

[0067] Magnesium nitrate 340g / L;

[0068] Hydrogen peroxide 4g / L;

[0069] The solvent is water.

[0070] Get 30gA and 18gB to mix, and the preparation and the method of use of non-phosphorus and slag-free normal temperature coating agent solution are the same as example 1. According to the GB / T1771-2007 standard, the neutral salt spray test of the aluminum paint film is carried out, and the test results are shown in the attached table.

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PUM

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Abstract

The invention relates to a phosphorus-and-slag-free normal temperature coating agent. The phosphorus-and-slag-free normal temperature coating agent is suitable for the metal surface treatment of a plurality of metal materials, such as cold-rolled plates, hot-rolled plates, cast iron, galvanized plates, electrolytic plates, aluminum and aluminum alloys. The phosphorus-and-slag-free normal temperature coating agent is mainly composed of hexafluorozirconic acid, hydrofluoric acid, magnesium nitrate, hydrogen peroxide and water. The coating agent comprises a component A, a component B and a component C, wherein the component A comprises hexafluorozirconic acid, hydrofluoric acid and water; the component B comprises magnesium nitrate, hydrogen peroxide and water; and the component C comprises hexafluorozirconic acid, magnesium nitrate and water. A preparation method of the coating agent comprises the following steps: mixing the component A with the component B according to a certain ratio, fully stirring, and adding water to a constant volume; and adding the component C according to a certain proportion as a supplement to realize adjustment when the concentration of the above treatment liquid decreases. The phosphorus-and-slag-free normal temperature coating agent has the characteristics of strong adhesion capability, strong anticorrosion performance, simple operation method, and no need of the surface adjustment treatment or passivation enclosing, so the process flow is shortened, the coating agent can be repeatedly used for a long term, and the coating agent has a lower cost than traditional phosphatization liquids. Additionally, the environmentally-friendly coating agent contains no nitrites, phosphates, chromium ions or other toxic heavy metal ions or harmful volatile substances, so sewage can be directly discharged without sewage treatment.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to an environment-friendly non-phosphorus and slag-free normal-temperature film agent capable of treating various metal surfaces with better performance than traditional phosphating solutions and a use method thereof. Background technique [0002] When metal is transported, processed and handled, it is very easy to be oxidized or corroded when it encounters a humid atmosphere or a harsher environment. For example, under the action of humid air, the surface of steel will form a relatively loose oxide film and be corroded. The direct economic loss caused by corrosion is huge every year in the world; although the surface of aluminum has a naturally formed oxide film to protect it from atmospheric erosion, But it is easy to be corroded by acid and alkali. At the same time, the metal surface will also absorb some impurities, oil, etc., which is extremely unfavorable to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/34
Inventor 况金权
Owner 广东东明新材科技有限公司
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