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Aluminum alkali-washing corrosion inhibitor, and preparation method and application thereof

A technology of corrosion inhibitor and alkaline washing, applied in the field of aluminum alloy anticorrosion, can solve the problems of low corrosion inhibition rate, high price, toxicity, etc., and achieve the effect of good corrosion inhibition performance, enhanced corrosion inhibition performance, and avoidance of agglomeration

Active Publication Date: 2015-02-25
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 cleaning 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 in parts by mass and heat to 40°C, stir and mix evenly at 180rpm to obtain aluminum alkali cleaning corrosion inhibition Liquid A of the agent;

[0030] (b) Weigh 15 parts of sodium silicate, 5 parts of benzotriazole and 13 parts of water in parts by mass, and stir and mix evenly at a speed of 180 rpm at room temperature to obtain liquid B of the aluminum alkali cleaning corrosion inhibitor;

[0031] (c) Weigh 20 parts of sodium gluconate, 8 parts of acridine and 12 parts of water in parts by mass, stir and mix evenly at a speed of 180 rpm at room temperature to obtain liquid C of the aluminum alkali cleaning 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) into step (a) ...

Embodiment 2

[0043] A kind of aluminum alkali cleaning 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 in parts by mass and heat to 45°C, stir and mix evenly at 200rpm to obtain aluminum alkali cleaning corrosion inhibitor Liquid A of the agent;

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

[0046] (c) Weigh 15 parts of sodium gluconate, 10 parts of acridine and 11 parts of water in parts by mass, and stir and mix evenly at a speed of 200 rpm at room temperature to obtain liquid C of the aluminum alkali cleaning 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) ...

Embodiment 3

[0050] A kind of aluminum alkaline cleaning 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 in parts by mass and heat to 45°C, stir and mix evenly at 250rpm to obtain aluminum alkali cleaning corrosion inhibitor Liquid A of the agent;

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

[0053] (c) Weigh 10 parts of sodium gluconate, 12 parts of acridine and 10 parts of water in parts by mass, stir and mix evenly at a speed of 200 rpm at room temperature to obtain liquid C of the aluminum alkali cleaning 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) into step (a) under...

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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 cleaning corrosion inhibitor and its preparation method and application. Background technique [0002] Aluminum has the characteristics of light material, good thermal conductivity, easy processing, and very corrosion-resistant in neutral, near-neutral water and atmosphere, and is widely used in the manufacture of aluminum plate cooling 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. A layer of 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 an astonishing corrosion loss caused by various environments every year. In order to improve the corrosion ...

Claims

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Application Information

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IPC IPC(8): C23G1/22C23G1/16C23G1/18
CPCC23G1/16C23G1/18C23G1/22
Inventor 孙立明贾虹孙若思
Owner 马鞍山市鸿伟环化有限公司
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