Aluminum environment-friendly nickel-free sealing agent and preparation method and sealing method thereof

A sealing agent, environmental protection technology, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve problems such as environmental hazards, and achieve the effects of reduced difficulty, excellent brightness, and simple preparation methods and sealing methods.

Inactive Publication Date: 2019-05-21

OUBONE GUANGZHOU UNITED BUILDING MATERIAL CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

The current sealing agent usually contains fluorine, nickel and other substances. After sealing the anodized film layer, a larg...

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Abstract

The invention discloses an aluminum environment-friendly nickel-free sealing agent and a preparation method and sealing method of the aluminum environment-friendly nickel-free sealing agent. The sealing agent is prepared from, by weight, 10-30 parts of lithium acetate, 0.5-2 parts of sodium persulfate, 0.5-2 parts of glacial acetic acid, 30-50 parts of potassium fluoride dihydrate and 5-20 parts of sodium fluoride. The preparation method and sealing method of the aluminum environment-friendly nickel-free sealing agent are easy and efficient, and the aluminum environment-friendly nickel-free sealing agent contains no nickel or other controlled substance, and is environmentally friendly.

Application Domain

Surface reaction electrolytic coating

Technology Topic

Sodium fluorideChemistry +10

Examples

Experimental program(3)

Example Embodiment

[0016] Example 1:

[0017] An environmental protection nickel-free sealing agent for aluminum, comprising the following raw materials in parts by weight: 10-20 parts of lithium acetate, 0.5-1 part of sodium persulfate, 0.5-1 part of glacial acetic acid, and 30-40 parts of potassium fluoride dihydrate , 5-10 parts of sodium fluoride.

[0018] Its preparation method comprises the following steps:

[0019] 1) Add lithium acetate, sodium persulfate, and sodium fluoride to an equal amount of deionized water, stir evenly, and obtain a mixed solution;

[0020] 2) During the continuous stirring process, add the corresponding amount of glacial acetic acid and potassium fluoride dihydrate, and stir evenly.

[0021] The sealing method comprises the steps of anodic oxidation treatment of aluminum and aluminum alloys, immersion in an aluminum environmental protection nickel-free sealing agent solution after washing with water, and the temperature of the aluminum environmental protection nickel-free sealing agent solution is controlled at 25 degrees.

[0022] The concentration of the aluminum environmental protection nickel free sealing agent in the aluminum environmental protection nickel free sealing agent solution is 50g/L

Example Embodiment

[0023] Example 2

[0024] An environmental protection nickel-free sealing agent for aluminum, comprising the following raw materials in parts by weight: 10 parts of lithium acetate, 1 part of sodium persulfate, 1 part of glacial acetic acid, 40 parts of potassium fluoride dihydrate, and 10 parts of sodium fluoride.

[0025] Its preparation method comprises the following steps:

[0026] 1) Add lithium acetate, sodium persulfate, and sodium fluoride to an equal amount of deionized water, stir evenly, and obtain a mixed solution;

[0027] 2) During the continuous stirring process, add the corresponding amount of glacial acetic acid and potassium fluoride dihydrate, and stir evenly.

[0028] The sealing method includes the steps of anodic oxidation treatment of aluminum and aluminum alloys, immersing in the aluminum environmental protection nickel-free sealing agent solution after washing with water, and the temperature of the aluminum environmental protection nickel-free sealing agent solution is controlled at 30 degrees.

[0029] The concentration of the aluminum environmental protection nickel free sealing agent in the aluminum environmental protection nickel free sealing agent solution is 50g/L.

Example Embodiment

[0030] Example 3

[0031] An environmental protection nickel-free sealing agent for aluminum comprises the following raw materials in parts by weight: 20 parts of lithium acetate, 0.5 parts of sodium persulfate, 0.5 parts of glacial acetic acid, 30 parts of potassium fluoride dihydrate, and 5 parts of sodium fluoride.

[0032] Its preparation method comprises the following steps:

[0033] 1) Add lithium acetate, sodium persulfate, and sodium fluoride to an equal amount of deionized water, stir evenly, and obtain a mixed solution;

[0034] 2) During the continuous stirring process, add the corresponding amount of glacial acetic acid and potassium fluoride dihydrate, and stir evenly.

[0035] The sealing method includes the steps of anodic oxidation treatment of aluminum and aluminum alloys, immersion in an aluminum environmental protection nickel-free sealing agent solution after washing with water, and the temperature of the aluminum environmental protection nickel-free sealing agent solution is controlled at 15 degrees.

[0036] The concentration of the aluminum environmental protection nickel free sealing agent in the aluminum environmental protection nickel free sealing agent solution is 50g/L.

[0037] The beneficial effects of the invention are: the aluminum environmental protection nickel-free sealing agent breaks through the composition of the aluminum oxide film containing the control substance nickel, and has the characteristics of excellent brightness, flatness, discoloration resistance, corrosion resistance and high adhesion. , does not contain heavy metals, avoids the discharge of wastewater containing heavy metals, and reduces the difficulty of wastewater treatment; and the preparation method and the sealing method are simple, efficient, and high in work efficiency.

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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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Classification and recommendation of technical efficacy words

Reduce difficulty
Good brightness

Aluminum environment-friendly nickel-free sealing agent and preparation method and sealing method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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