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An anti-oxidation and anti-corrosion degreasing brightener for aluminum and magnesium alloys

A magnesium alloy and anti-oxidation technology, which is applied in the field of chemicals, can solve the problems of harsh pH control of cleaning agents, affecting sample cleaning efficiency, and blackening of material surfaces, achieving good polishing effects, enhanced cleaning effects, and improved corrosion resistance. Effect

Inactive Publication Date: 2020-05-12
广东锴力环保新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the alkalinity is too high, it will still cause blackening, darkening and corrosion on the surface of the material.
If the alkalinity of the sample is too low, it will affect the cleaning efficiency of the sample
At the same time, since elemental magnesium is more active than elemental aluminum, the pH control of the cleaning agent is more stringent

Method used

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  • An anti-oxidation and anti-corrosion degreasing brightener for aluminum and magnesium alloys
  • An anti-oxidation and anti-corrosion degreasing brightener for aluminum and magnesium alloys
  • An anti-oxidation and anti-corrosion degreasing brightener for aluminum and magnesium alloys

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of fatty acid soap: Mix oleic acid and sodium hydroxide at a molar ratio of 1:1.2, add water at the same time, then stir and heat to 55°C, keep warm for 1.3h until the sample is uniform and transparent in appearance, and finally evaporate the water to dryness to obtain fatty acid soap.

[0029] Weigh the following components in parts by weight: 9 parts of monoethanolamine, 5 parts of diethylene glycol monobutyl ether, 4 parts of benzotriazole, 3 parts of 2-mercaptobenzothiazole, 3 parts of the above-mentioned fatty acid soap, lauryl 2 parts of alcohol polyoxyethylene ether, 2 parts of boric acid, 2 parts of tartaric acid, 0.8 part of Rhodafac ASI-80, 73.2 parts of water.

[0030] After uniformly mixing monoethanolamine, fatty acid soap, polyoxyethylene lauryl ether and water, turn on the electric stirring, and stir until it dissolves.

[0031] Add diethylene glycol monobutyl ether, benzotriazole, 2-mercaptobenzothiazole, and Rhodafac ASI-80 one by one, turn ...

Embodiment 2

[0034] Preparation of fatty acid soap: mix ricinoleic acid and potassium hydroxide at a molar ratio of 1:1.3, add water at the same time, then stir and heat to 52°C, keep warm for 1.4h until the sample is uniform and transparent in appearance, and finally evaporate the water to dryness to obtain fatty acid soap .

[0035] Weigh the following components in parts by weight: 9 parts of triethanolamine, 2 parts of diethylene glycol monomethyl ether, 2 parts of dipropylene glycol monomethyl ether, 1 part of 3,5,5-trimethylhexanoic acid, benzotri 4 parts of azoles, 2 parts of the above-mentioned fatty acid soap, 2 parts of polyethylene glycol 600, 0.5 parts of Rhodafac ASI-800, 2 parts of citric acid, 4 parts of maleic acid, and 70.2 parts of water.

[0036] After uniformly mixing triethanolamine, fatty acid soap, polyethylene glycol 600 and water, turn on the electric agitator, and fully agitate until it dissolves.

[0037] Add diethylene glycol monomethyl ether, dipropylene glyco...

Embodiment 3

[0040] Preparation of fatty acid soap: Mix coconut oleic acid and ammonia water at a molar ratio of 1:1.4, add water at the same time, then stir and heat to 58°C, keep warm for 1.2h until the appearance of the sample is uniform and transparent, and finally evaporate the water to dryness to obtain fatty acid soap.

[0041]Weigh the following components in parts by weight: 2 parts of triethanolamine, 6 parts of monoethanolamine, 5 parts of tripropylene glycol monomethyl ether, 1 part of diethylene glycol monobutyl ether, 4 parts of 3,5,5-trimethylhexanoic acid 1 part of benzotriazole, 2 parts of triethanolamine borate, 3 parts of fatty acid soap mentioned above, 1 part of surfactant macrogol 600 monooleate, 0.5 part of Rhodafac ASI-80, 5 parts of boric acid , 69.5 parts of solvent.

[0042] After uniformly mixing triethanolamine, monoethanolamine, fatty acid soap, polyethylene glycol 600 monooleate and water, turn on the electric agitator, and fully agitate until it dissolves. ...

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Abstract

The invention relates to a chemical used for aluminum and magnesium alloys, particularly relates to a cleaning agent having cleaning, degreasing and brightening functions for aluminum alloys and magnesium alloy, and belongs to the technical field of chemicals. The agent includes, by weight, 8-10 parts of an organic amine, 3-7 parts of a water-soluble organic solvent, 3-8 parts of a corrosion inhibitor, 0.5-1 part of a color change preventing agent, 2-4 parts of fatty acid soap, 1-3 parts of a surfactant, 3-6 parts of a complexing agent and 60-80 parts of a solvent. The anti-oxidation, anticorrosion, degreasing and brightening agent for aluminum and magnesium alloys, which is reasonable in compatibility, has good cleaning and polishing effects on aluminum alloys and magnesium alloys, makesa cleaned sample bright and clean, and protects the sample from being blackened or darkened in a certain period of time after cleaning, and allows a material to have deactivation, anti-oxidation, andanticorrosion effects and the like. The disclosed degreasing and brightening agent does not contain sulfur, phosphorus, or the like, and is low in environment pollution, and after-treatment of a wasteliquid is simple.

Description

technical field [0001] The invention relates to a chemical for aluminum and magnesium alloys, in particular to a cleaning agent which can be used for cleaning and degreasing aluminum alloys and magnesium alloys and has a brightening effect, and belongs to the technical field of chemicals. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry because of its light weight, high strength, and good electrical and thermal conductivity. [0003] The surface cleaning of aluminum alloy is also relatively mature, usually divided into acid cleaning and alkaline cleaning. Acidic cleaning can quickly remove oil stains, rust stains, and white spots on the surface of materials. However, because aluminum is an amphoteric metal with relatively active properties, the acidity control is usually not strict, resulting in over-corrosion of the material surface. Alkaline cleaning has an obvious effect on removing oil stains on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/12C23G1/06C23G1/04
CPCC23G1/04C23G1/06C23G1/068C23G1/12C23G1/125
Inventor 王涛
Owner 广东锴力环保新材料有限公司
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