Composition for removing corrosion on surface of aluminum alloy as well as preparation method and application of composition

A technology of aluminum alloy surface and composition, which is applied in the field of composition for removing corrosion of aluminum alloy surface and its preparation field, can solve the problems of affecting the health of operators and generating strong acid mist, etc., achieves good effect, is easy to recycle and clean up, and spreads small effect

Pending Publication Date: 2022-06-28
CASIC DEFENSE TECH RES & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, aluminum alloys are mostly removed by mechanical methods or dissolved by strong acids. When these methods are used to remove corrosion on the surface of aluminum alloys, strong acid mist will be generated, which will affect the health of operators.
And it is not applicable to equipment that does not have the conditions for overhaul and renovation

Method used

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  • Composition for removing corrosion on surface of aluminum alloy as well as preparation method and application of composition
  • Composition for removing corrosion on surface of aluminum alloy as well as preparation method and application of composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A composition for removing corrosion on aluminum alloy surfaces, comprising: 50g of acidic silica sol, 10g of sodium dichromate, 15g of phosphoric acid, 2g of stearic acid, 4g of fatty alcohol polyoxyethylene ether, and 4g of hexamethylenetetramine.

[0028] The method for preparing the above-mentioned composition for removing corrosion on the surface of an aluminum alloy, comprising:

[0029] (1) stirring and heating each component of the present embodiment under the condition of 120 ° C to form a viscose composition;

[0030] (2) cooling the viscose composition to form a solid composition;

[0031] (3) stirring the solid composition to a fluid viscose state to form a composition for removing corrosion on the surface of an aluminum alloy.

Embodiment 2

[0033] A composition for removing corrosion on the surface of an aluminum alloy, comprising: 70 g of acidic silica sol, 20 g of potassium permanganate, 35 g of phosphoric acid, 0.01 g of sodium dodecylbenzene sulfonate, 0.01 g of fatty alcohol polyoxyethylene ether, water-soluble Benzyltriazole 0.01g.

[0034] The method for preparing the above-mentioned composition for removing corrosion on the surface of an aluminum alloy, comprising:

[0035] (1) stirring and heating each component of the present embodiment under the condition of 100 ° C to form a viscose composition;

[0036] (2) cooling the viscose composition to form a solid composition;

[0037] (3) stirring the solid composition to a fluid viscose state to form a composition for removing corrosion on the surface of an aluminum alloy.

Embodiment 3

[0039] A composition for removing corrosion on the surface of an aluminum alloy, comprising: 55 g of acidic silica sol, 12 g of potassium permanganate, 30 g of phosphoric acid, 1 g of stearic acid, 0.1 g of fatty alcohol polyoxyethylene ether, and 2 g of hexamethylene tetramine .

[0040] The method for preparing the above-mentioned composition for removing corrosion on an aluminum alloy surface, comprising:

[0041] (1) stirring and heating each component of the present embodiment under the condition of 150 ℃ to form a viscose composition;

[0042] (2) cooling the viscose composition to form a solid composition;

[0043] (3) stirring the solid composition to a fluid viscose state to form a composition for removing corrosion on the surface of an aluminum alloy.

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PUM

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Abstract

The invention provides a composition for removing corrosion on the surface of an aluminum alloy as well as a preparation method and application of the composition. The composition comprises the following components in parts by mass: 50-70 parts of acidic gel, 10-20 parts of a strong oxidant, 15-35 parts of inorganic medium-strong acid without reducibility, 0.01-2 parts of a surfactant, 0.01-4 parts of a penetrant and 0.01-4 parts of a corrosion inhibitor. The composition is coated on the surface of the aluminum alloy to be removed, so that the corrosives on the surface of the aluminum alloy can be quickly removed, the operation is simple, and the effect of removing the corrosives is good; strong acid replaces traditional strong acid for dissolution in use, strong acid mist generated when corrosives on the surface of the aluminum alloy are removed can be avoided, and the health of operators cannot be affected. Besides, the aluminum alloy with the surface cleaned up can be obtained after the composition is cured and cleaned after being coated for a period of time, a mechanical method with high strength is not needed for cleaning, and the aluminum alloy composition is suitable for equipment without overhaul and renovation conditions and wide in application range.

Description

technical field [0001] The present application relates to the technical field of aluminum alloy equipment maintenance, and in particular, to a composition for removing corrosion on the surface of aluminum alloys and a preparation method and application thereof. Background technique [0002] Equipment deployed in coastal areas has been exposed to harsh environments of high temperature, high humidity, high salt spray, and strong ultraviolet rays for a long time, and its corrosion degree is more serious than that of equipment generally deployed on land. Aluminum and aluminum alloys first naturally form Al at room temperature in the atmosphere 2 O 3 Thin film, Al 2 O 3 The film forms a thin layer of AlOOH after being exposed for several months or under the influence of extreme environments, and after a period of time, the thin layer of AlOOH is covered with a layer of Al(OH) 3 . Therefore, when aluminum alloy equipment is in a humid environment for a long time, water, conde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G5/032
CPCC23G5/032
Inventor 张昕赵娟石思宇仲莹莹赵昆雨李辰唐源杨洋
Owner CASIC DEFENSE TECH RES & TEST CENT
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