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.
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Embodiment 1
[0017] An aluminum environment-friendly nickel-free sealant, comprising the following raw materials in proportions 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, and stir evenly to obtain a mixed solution;
[0020] 2) During continuous stirring, add corresponding amount of glacial acetic acid and potassium fluoride dihydrate, and stir evenly.
[0021] The sealing method includes anodic oxidation treatment of aluminum and aluminum alloy, washing, and immersion in an aluminum-environmental nickel-free sealing agent solution for sealing treatment. The temperature of the aluminum-environmental nickel-free sealing agent solution is controlled at 25 degrees.
[0022] ...
Embodiment 2
[0024] An aluminum environment-friendly nickel-free sealing agent, comprising the following raw materials in proportions 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, and stir evenly to obtain a mixed solution;
[0027] 2) During continuous stirring, add corresponding amount of glacial acetic acid and potassium fluoride dihydrate, and stir evenly.
[0028] The sealing method includes anodic oxidation treatment of aluminum and aluminum alloys, washing, and immersion in an aluminum-environmental nickel-free sealing agent solution for sealing treatment, and the temperature of the aluminum-environmental nickel-free sealing agent solution is controlled at 30 degrees.
[0029] The con...
Embodiment 3
[0031] An aluminum environment-friendly nickel-free sealing agent, comprising the following raw materials in proportions 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, and stir evenly to obtain a mixed solution;
[0034] 2) During continuous stirring, add corresponding amount of glacial acetic acid and potassium fluoride dihydrate, and stir evenly.
[0035] The sealing method includes anodic oxidation treatment of aluminum and aluminum alloys, washing, and immersion in an aluminum-environmental nickel-free sealing agent solution for sealing treatment, and the temperature of the aluminum-environmental nickel-free sealing agent solution is controlled at 15 degrees.
[0036] Th...
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