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Corrosion inhibitor used for preventing corrosion of brass

A technology of brass products and corrosion inhibitors, which is applied in the field of corrosion and protection of metal materials, can solve problems such as eutrophication of water bodies, non-biodegradable water pollution, etc., achieve good corrosion inhibition, simple preparation methods, and environmental friendliness Effect

Active Publication Date: 2013-10-16
WEIHAI TIANYUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the serious disadvantage of this type of corrosion inhibitor is that it is toxic and most of them are not biodegradable. Moreover, after the wastewater containing phosphorus is discharged into the environment, it will cause eutrophication of the water body, form red tides and other hazards, and cause serious water pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Corrosion inhibitor used to prevent corrosion of brass products, calculated according to weight fraction, its components are: 40 parts of organic polymer components; 5 parts of azole components; 1 part of dispersing components; 1 part of zinc salt; gluconic acid Sodium 1 part. The organic polymer component is a mixture of polyaspartic acid and polyepoxysuccinic acid, and the addition ratio of polyaspartic acid and polyepoxysuccinic acid is 1:3. The azole component is a composition of benzotriazole sodium, mercaptobenzothiazole sodium and tolyltriazole, and benzotriazole sodium, mercaptobenzothiazole sodium and tolyltriazole are added The mass ratio is listed as 2:1:1. The dispersed component is sodium silicate; the zinc salt is zinc sulfate.

[0030] The preparation method of the corrosion inhibitor of the present invention comprises the steps of dissolving the organic polymer component in deionized water as a solvent, first adding the azole component, stirring and di...

Embodiment 2

[0032] Corrosion inhibitor used to prevent corrosion of brass products, calculated according to weight fraction, its components are: 70 parts of organic polymer components; 20 parts of azole components; 8 parts of dispersing components; 8 parts of zinc salt; gluconic acid Sodium 5 parts. The organic polymer component is a mixture of polyaspartic acid and polyepoxysuccinic acid, and the addition ratio of polyaspartic acid and polyepoxysuccinic acid is 1:10. The azole component is a composition of benzotriazole sodium, mercaptobenzothiazole sodium and tolyltriazole, and benzotriazole sodium, mercaptobenzothiazole sodium and tolyltriazole are added The mass ratio is listed as 2:1:1. The dispersion component is a composition of polyethylene glycol and acrylamide mixed in a mass ratio of 2:5; the zinc salt is zinc chloride.

[0033] The preparation method of the corrosion inhibitor of the present invention comprises the steps of dissolving the organic polymer component in deioniz...

Embodiment 3

[0035] Corrosion inhibitor used to prevent corrosion of brass products, calculated according to weight fraction, its components are: 50 parts of organic polymer components; 10 parts of azole components; 4 parts of dispersing components; 5 parts of zinc salt; gluconic acid Sodium 3 parts. The organic polymer component is a mixture of polyaspartic acid and polyepoxysuccinic acid, and the addition ratio of polyaspartic acid and polyepoxysuccinic acid is 1:5. The azole component is a composition of benzotriazole sodium, mercaptobenzothiazole sodium and tolyltriazole, and benzotriazole sodium, mercaptobenzothiazole sodium and tolyltriazole are added The mass ratio is listed as 2:1:1. The dispersion component is a composition of polyethylene glycol and fatty acid polyethylene glycol ester mixed in a mass ratio of 1:1; the zinc salt is a mixture of zinc sulfate and zinc chloride.

[0036] The preparation method of the corrosion inhibitor of the present invention comprises the steps...

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Abstract

The invention relates to a corrosion inhibitor used for preventing corrosion of brass. The corrosion inhibitor is characterized by comprising the following components by weight parts: 40-70 parts of organic polymer components, 5-20 parts of azole components, 1-8 parts of dispersing components, 1-8 parts of zinc salts and 1-5 parts of sodium gluconate. A preparation method of the corrosion inhibitor comprises dissolving the organic polymer components in a solvent, firstly adding the azole components, uniformly stirring and dissolving, and then sequentially adding the dispersing components, the zinc salts and the sodium gluconate to obtain finish product. Finally, the produced corrosion inhibitor has a concentration of 10-60 mg / L. According to the invention, the corrosion inhibitor used for preventing corrosion of the brass does not contain phosphorus components, and thus does not pollute water body; meanwhile, polyaspartic acid and polyepoxysuccinic acid are added, wherein the two are high-efficient and environmental-friendly components and thus are environment-friendly products. The corrosion inhibitor is scientific and reasonable in formula, and the preparation method is simple to operate, thereby being suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of metal material corrosion and protection, and in particular relates to a corrosion inhibitor for preventing scaling and corrosion of brass products. Background technique [0002] Brass is an alloy composed of copper and zinc. If it is only composed of copper and zinc, it is called ordinary brass. The alloy made by adding other metals to ordinary brass is called special brass. Generally, flavonoid products have high strength, high hardness, strong chemical corrosion resistance, and the mechanical properties of cutting processing are also outstanding. Brass products are mostly used. Used in the manufacture of heat exchangers and condensers, cryogenic pipelines, valves, water pipes, submarine transportation pipes, manufacturing sheets, strips, bars, pipes, casting parts, etc. [0003] The anti-corrosion of metal products has always been a concern during use, especially brass products are widely used, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/173
Inventor 余丽
Owner WEIHAI TIANYUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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