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A kind of aluminum alkali cleaning corrosion inhibitor and its preparation method and application

A technology of corrosion inhibitor and alkali washing, applied in the field of aluminum alloy anticorrosion, can solve the problems of low corrosion inhibition rate, toxicity, large dose, etc., achieve good corrosion inhibition performance, enhance corrosion inhibition performance, and reduce the dosage of corrosion inhibitor. Effect

Active Publication Date: 2017-02-01
马鞍山市鸿伟环化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of low corrosion inhibition rate, large dose, some toxicity and high price of existing aluminum corrosion inhibitors, the present invention provides an aluminum alkali cleaning corrosion inhibitor and its preparation method and application. On the basis of the research on corrosion inhibitors for corrosion-resistant medium aluminum, the compounding effect of additives and corrosion inhibitors was studied, and the synergistic effect between corrosion inhibitors and corrosion inhibitors, and between corrosion inhibitors and additives was studied, so as to produce high-efficiency, environment-friendly Friendly Alkali Cleaning Corrosion Inhibitor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of aluminum alkali washing corrosion inhibitor, its preparation steps are:

[0029] (a) Weigh 30 parts of diethylene glycol diacrylate phthalate, 15 parts of water and 15 parts of calcium tartrate according to mass parts, heat to 40℃, stir and mix evenly at 180rpm to obtain aluminum alkali washing corrosion inhibition Agent A liquid;

[0030] (b) Weigh 15 parts of sodium silicate, 5 parts of benzotriazole and 13 parts of water according to mass parts, stir and mix uniformly at 180 rpm at room temperature to obtain liquid B of aluminum alkali washing corrosion inhibitor;

[0031] (c) Weigh 20 parts of sodium gluconate, 8 parts of acridine and 12 parts of water according to mass parts, stir and mix evenly at a speed of 180 rpm at room temperature to obtain liquid C of aluminum alkali washing corrosion inhibitor;

[0032] (d) When liquid A in step (a) is cooled to 30°C, add liquid B obtained in step (b) and liquid C obtained in step (c) to step (a) under stirring conditions...

Embodiment 2

[0043] A kind of aluminum alkali washing corrosion inhibitor, its preparation steps are:

[0044] (a) Weigh 20 parts of diethylene glycol diacrylate phthalate, 12 parts of water and 10 parts of calcium tartrate according to mass parts, heat to 45°C, stir and mix evenly at 200 rpm to obtain aluminum alkali washing corrosion inhibition Agent A liquid;

[0045] (b) Weigh 20 parts of sodium silicate, 8 parts of benzotriazole and 12 parts of water according to mass parts, stir and mix evenly at 200 rpm at room temperature to obtain liquid B of aluminum alkali washing corrosion inhibitor;

[0046] (c) Weigh 15 parts of sodium gluconate, 10 parts of acridine and 11 parts of water according to mass parts, stir and mix evenly at 200 rpm at room temperature to obtain the C solution of aluminum alkali washing corrosion inhibitor;

[0047] (d) When liquid A in step (a) is cooled to 30°C, add liquid B obtained in step (b) and liquid C obtained in step (c) to step (a) under stirring conditions. In...

Embodiment 3

[0050] A kind of aluminum alkali washing corrosion inhibitor, its preparation steps are:

[0051] (a) Weigh 25 parts of diethylene glycol diacrylate phthalate, 10 parts of water and 12 parts of calcium tartrate according to mass parts, heat to 45°C, stir and mix evenly at 250rpm to obtain aluminum alkali washing corrosion inhibition Agent A liquid;

[0052] (b) Weigh 25 parts of sodium silicate, 10 parts of benzotriazole and 10 parts of water according to mass parts, stir and mix evenly at 200 rpm at room temperature to obtain liquid B of aluminum alkali washing corrosion inhibitor;

[0053] (c) Weigh 10 parts of sodium gluconate, 12 parts of acridine and 10 parts of water according to the mass parts, stir and mix evenly at 200 rpm at room temperature to obtain the C solution of aluminum alkali washing corrosion inhibitor;

[0054] (d) When liquid A in step (a) is cooled to 30°C, add liquid B obtained in step (b) and liquid C obtained in step (c) to step (a) under stirring conditions....

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Abstract

The invention discloses an aluminum alkali-washing corrosion inhibitor, and a preparation method and application thereof, belonging to the field of aluminum alloy corrosion inhibition. The corrosion inhibitor is composed of water, sodium silicate, sodium gluconate, benzotriazole, calcium tartrate, acridine and phthalate diethylene glycol diacrylate (PDDA). The preparation method comprises the following steps: (1) uniformly mixing the PDDA, calcium tartrate and water to obtain a solution A; (2) uniformly mixing the sodium silicate, benzotriazole and water to obtain a solution B; (3) uniformly mixing the sodium gluconate, acridine and water to obtain a solution C; and (4) adding the solution B and solution C into the solution A, and stirring uniformly to obtain the corrosion inhibitor. The corrosion inhibitor has the advantages of favorable effect, environment friendliness, simple preparation technique and mild conditions, is suitable for corrosion inhibition protection of the aluminum alloy material in the alkali washing process, and is easy to manufacture.

Description

Technical field [0001] The invention belongs to the field of aluminum alloy anticorrosion, and more specifically, relates to an aluminum alkali washing corrosion inhibitor and a preparation method and application thereof. Background technique [0002] Aluminum has the characteristics of light material, good thermal conductivity, easy processing, and very resistant to corrosion in neutral and near-neutral water and the atmosphere. It is widely used in the manufacture of aluminum plate cold exchange equipment, condensers, air coolers, crystallizers, and reactors. , Dryers, storage tanks, tank cars and piping, etc., are also widely used in construction, transportation, light industry and civil industries. An oxide film can be formed on the surface of aluminum under natural conditions, but this film is very thin and easily damaged, so its corrosion resistance is very poor, resulting in the annual corrosion loss caused by various environments is very amazing. In order to improve the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/22C23G1/16C23G1/18
CPCC23G1/16C23G1/18C23G1/22
Inventor 孙立明唐胜卫孙若思李平唐棣贾虹
Owner 马鞍山市鸿伟环化有限公司
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