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Corrosion inhibitor, cleaning solution and application thereof

A technology of corrosion inhibitor and cleaning liquid, applied in the chemical industry, can solve the problems of scrapped parts, poor effect, blackening, etc., and achieve the effect of increasing the protection area, easy to obtain formula raw materials, and high corrosion inhibition efficiency.

Active Publication Date: 2012-03-28
四川富乐德科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when it comes to stainless steel materials, especially when silicide is attached to the surface of precision parts, it is often necessary to use strong acids such as hydrochloric acid and hydrofluoric acid for treatment. General-purpose corrosion inhibitors are less effective in the above-mentioned strong acids, and general-purpose corrosion inhibitors are added. When used in the process of stainless steel precision parts, it is often accompanied by pitting, blackening and other adverse conditions, causing the parts to be scrapped

Method used

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  • Corrosion inhibitor, cleaning solution and application thereof
  • Corrosion inhibitor, cleaning solution and application thereof
  • Corrosion inhibitor, cleaning solution and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The composition of corrosion inhibitor A is:

[0055] Modified imidazoline derivatives 50%;

[0056] Alcohol: 20%

[0057] Organic amines: 20%

[0058] Alkynyl alcohols and their derivatives: 8%

[0059] Non-ionic surfactant: 2%

[0060] Add each component into the flask in sequence according to mass percentage, and mechanically stir for 30 minutes to obtain a viscous, non-layered brown liquid, namely corrosion inhibitor A.

Embodiment 2

[0062] The composition of corrosion inhibitor B is:

[0063] Modified imidazoline derivatives 55%;

[0064] Alcohol: 20%

[0065] Organic amines: 15%

[0066] Alkynyl alcohols and their derivatives: 8%

[0067] Non-ionic surfactant: 2%

[0068] Add each component into the flask in sequence according to mass percentage, and mechanically stir for 30 minutes to obtain a viscous, non-layered brown liquid, that is, corrosion inhibitor B.

Embodiment 3

[0070] The composition of corrosion inhibitor C is:

[0071] Modified imidazoline derivatives 60%;

[0072] Alcohol: 20%

[0073] Organic amines: 10%

[0074] Alkynyl alcohols and their derivatives: 8%

[0075] Non-ionic surfactant: 2%

[0076] Add each component into the flask in sequence according to mass percentage, and mechanically stir for 30 minutes to obtain a viscous, non-layered brown liquid, that is, corrosion inhibitor C.

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PUM

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Abstract

The invention relates to the technical field of corrosion inhibitors and discloses a corrosion inhibitor, cleaning solution and application thereof. The corrosion inhibitor comprises the following components in percentage by weight: 37-60% of modified imidazoline derivative, 20-30% of organic alcohol, 10-20% of organic amine, 5-10% of alkynol and derivative thereof and 1-3% of nonionic surface active agent. The corrosion inhibitor is added into the cleaning solution so as to clean stainless steel. The cleaning solution is mixed acid solution of 12% of hydrochloric acid and 5% of fluorhydric acid; and each liter of acid solution is added with 3g of corrosion inhibitor. The corrosion inhibitor has the advantages of being good in cleaning effect, low in corrosion, low in production cost, simple in structure and free of environment pollution and can be used as an acid cleaning corrosion inhibitor for stainless steel precision parts.

Description

technical field [0001] The invention relates to a corrosion inhibitor added to a chemical cleaning solution, in particular to a corrosion inhibitor, a cleaning solution and applications thereof, belonging to the technical field of chemical engineering. Background technique [0002] Strong acid cleaning of surface rust and dirt is an important means of metal material pretreatment and equipment system maintenance, because chemical cleaning is very important for maintaining the normal operation of equipment, and it is still used in metal materials, machinery, metallurgy, petrochemical and other industries so far. widely used in. [0003] Because strong acid has a corrosive effect on metal equipment and parts, the phenomenon of "over-corrosion" often occurs in the pickling process, that is, not only the rust and dirt on the metal surface are removed during the pickling process, but also part of the metal substrate is also removed. . Therefore, the pickling process will not onl...

Claims

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Application Information

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IPC IPC(8): C23G1/06
Inventor 何桥贺贤汉尚玉帝廖宗洁
Owner 四川富乐德科技发展有限公司
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