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Corrosion inhibitor, cleaning solution and application thereof

A technology of reaction and derivatives, applied in corrosion inhibitors, cleaning fluids and their application fields, can solve problems such as parts scrapping, poor effect, pitting corrosion, etc., and achieve the effects of increased protection area, easy availability of formula raw materials, and low cost

Active Publication Date: 2016-06-15
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, a cleaning solution and applications thereof. The corrosion inhibitor includes the following components in terms of weight percentage: 37-60% of modified imidazoline derivatives, 20-30% of organic alcohols, 10-20% of organic amines, 5-10% of acetylenic alcohols and their derivatives, non- Ionic surfactant 1-3%. The corrosion inhibitor is added to the cleaning solution for immersion cleaning of stainless steel. The cleaning solution is a mixed acid solution of 12% hydrochloric acid and 3% hydrofluoric acid, and 3g of corrosion inhibitor is added to each liter of acid solution. The invention has the advantages of good cleaning effect, low corrosion, low production cost, simple process and no pollution to the environment, and can be used as a corrosion inhibitor for pickling 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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Patent Type & Authority Patents(China)
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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