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Medium-high temperature nickel-free pore sealing agent for aluminum alloy and preparation method for medium-high temperature nickel-free pore sealing agent

A medium-high temperature, aluminum alloy technology, applied in the direction of electrolytic coating, surface reaction electrolytic coating, coating, etc., can solve the problems of nickel harmful to human body, nickel poisoning, etc., and achieve the effect of simple wastewater treatment, stable bath solution and superior performance

Inactive Publication Date: 2019-05-21
湖北叒成科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although nickel salt can make the anodized film of aluminum parts pass through the sealing hole to obtain excellent performance, nickel is indeed a metal harmful to the human body: nickel can poison people, causing dermatitis, respiratory disorders, and Respiratory tract cancer and other diseases; Nickel ions will accumulate in animals and plants for a long time, which will have long-term effects on the environment, animals, including the human body; Nickel ions Ni 2+ The maximum allowable emission concentration is less than 1mg / L; nickel-free process and nickel-free industry are the urgent problems that must be solved in the aluminum processing industry

Method used

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  • Medium-high temperature nickel-free pore sealing agent for aluminum alloy and preparation method for medium-high temperature nickel-free pore sealing agent
  • Medium-high temperature nickel-free pore sealing agent for aluminum alloy and preparation method for medium-high temperature nickel-free pore sealing agent
  • Medium-high temperature nickel-free pore sealing agent for aluminum alloy and preparation method for medium-high temperature nickel-free pore sealing agent

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Effect test

Embodiment 1

[0038] This embodiment discloses a high-temperature nickel-free pore sealing agent in aluminum alloy, which includes the following components in parts by mass:

[0039] Calcium nitrate: 100 parts;

[0040] Magnesium nitrate: 20 parts;

[0041] Sodium fluorozirconate: 20 parts;

[0042] Glacial acetic acid: 10 parts;

[0043] Sodium dodecylbenzene sulfonate: 40 parts;

[0044] Water: 810 parts.

[0045] During production, add 1 / 2 of pure water to the reactor, then add 100 parts of calcium nitrate, 20 parts of magnesium nitrate, 20 parts of potassium fluorozirconate, and then continue to stir for at least 20 minutes, then add 10 parts of glacial acetic acid, After 40 parts of sodium dodecylbenzene sulfonate, it is then automatically stirred for 30 minutes, and finally the remaining water is added and mixed to make the required medium and high temperature nickel-free sealing agent.

Embodiment 2

[0047] This embodiment discloses a high-temperature nickel-free pore sealing agent in aluminum alloy, which includes the following components in parts by mass:

[0048] Calcium hydrogen phosphate: 50 parts;

[0049] Magnesium acetate: 50 parts;

[0050] Sodium fluorozirconate: 30 parts;

[0051] Citric acid: 10 parts;

[0052] Vinyl fatty alcohol polyoxyethylene ether: 40 parts;

[0053] Water: 820 parts.

[0054] During production, add 1 / 2 of pure water to the reactor, then add 50 parts of calcium hydrogen phosphate, 50 parts of magnesium acetate, 30 parts of sodium fluorozirconate, and then continue to stir for at least 20 minutes, and then add 10 parts of citric acid , After 40 parts of vinyl polyoxyethylene ether, then automatically stir for 30 minutes, and finally add the remaining water and mix to make the required medium and high temperature nickel-free sealing agent.

Embodiment 3

[0056] This embodiment discloses a high-temperature nickel-free pore sealing agent in aluminum alloy, which includes the following components in parts by mass: calcium bicarbonate: 60 parts;

[0057] Magnesium sulfate: 40 parts;

[0058] Fluozirconate amine: 25 parts;

[0059] Tartaric acid: 20 parts;

[0060] Sodium lauryl sulfate: 40 parts;

[0061] Water: 815 parts.

[0062] During production, add 1 / 2 of pure water to the reactor, then add 60 parts of calcium bicarbonate, 40 parts of magnesium sulfate, 25 parts of fluorozirconate, and then continue to stir for at least 20 minutes, then add 20 parts of tartaric acid, After 40 parts of sodium lauryl sulfate, it is then automatically stirred for 30 minutes, and finally the remaining water is added and mixed to make the required medium and high temperature nickel-free sealing agent.

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Abstract

The invention discloses a medium-high temperature nickel-free pore sealing agent for an aluminum alloy. The medium-high temperature nickel-free pore sealing agent is prepared from the following components in parts by weight: 10-100 parts of calcium salt, 20-50 parts of magnesium salt, 20-30 parts of rare earth salt, 10-30 parts of organic acid, 40-80 parts of surfactant and 580-840 parts of pure water. The invention also discloses a preparation method for the medium-high temperature nickel-free pore sealing agent for the aluminum alloy. The medium-high temperature nickel-free pore sealing agent disclosed by the invention can thoroughly seal an aluminum alloy anode oxidation film under the condition of a medium temperature (50-70 DEG C) or high temperature (80-100 DEG C), the performance isexcellent, and no dust, passing through sealing pores, is produced; in the pore sealing process, a tank liquid is stable and is clear without any precipitate, does not contain a nickel element, can thoroughly replace the existing commonly-used nickel-contained pore sealing agent, is equivalent in pore sealing effect, has no health threat to operators, is very environmentally friendly, is simple in wastewater treatment and can be discharged after being subjected to acid and alkali neutralization treatment.

Description

Technical field [0001] The invention relates to the technical field of aluminum alloy anodic oxidation, in particular to a medium and high temperature nickel-free pore sealing agent for aluminum alloy and a preparation method thereof. Background technique [0002] At present, aluminum alloy anodizing technology has become a very mature metal surface treatment technology at this stage and is widely used in military industry, communication equipment, cosmetics, home appliances, daily necessities, auto parts, medical equipment and other fields. [0003] The reason why anodizing has such a wide range of uses is mainly because the process can form honeycomb-shaped pores on the aluminum surface through special treatment of aluminum; it is because of the honeycomb-shaped pores that the material is insulated and wear-resistant. , Anti-corrosion, anti-fouling, anti-bacterial, good decoration and many other characteristics; However, these properties of honeycomb pores can be raised to a very...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/24
Inventor 汪超
Owner 湖北叒成科技有限公司
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