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A special corrosion inhibitor for brass and its preparation method

A corrosion inhibitor and brass technology, applied in the field of water treatment, can solve the problems of high price and large consumption, and achieve the effects of inhibiting corrosion, enhancing slow release effect and obvious compatibilization effect.

Active Publication Date: 2017-06-27
山东应天环保能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, the green copper corrosion inhibitor has not been widely used due to the disadvantages of high price and large dosage. of

Method used

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  • A special corrosion inhibitor for brass and its preparation method

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Effect test

Embodiment 1

[0041] The special corrosion inhibitor for brass in this embodiment includes the following components by mass percentage:

[0042] Sulfonic acid methylamino polyepoxysuccinic acid 30%,

[0043] N, N'-Diacetyl Adipyl Dihydrazide 22%,

[0044] Maleic acid-acrylic acid copolymer 16%,

[0045] Graphene oxide water dispersion 4%,

[0046] Benzotriazole 5%,

[0047] 23% zinc sulfate aqueous solution,

[0048] The mass fraction of the zinc sulfate aqueous solution is 12%.

[0049] The preparation method of the special corrosion inhibitor for brass in this embodiment is:

[0050] Weigh sulfonic acid methylamino polyepoxysuccinic acid, N, N'-diacetyl adipyl dihydrazide, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersion in proportion, and add them to the container in turn. Mix, heat to 90°C, add zinc sulfate aqueous solution dropwise within 2.0h, ultrasonic treatment for 20min, then heat to 105°C, add benzotriazole, reflux for 1h, then cool the material to 80°C, filter while h...

Embodiment 2

[0052] The special corrosion inhibitor for brass in this embodiment includes the following components by mass percentage:

[0053] Sulfonate methylamino polyepoxysuccinic acid 25%,

[0054] N, N'-Diacetyl adipyl dihydrazide 20%,

[0055] Maleic acid-acrylic acid copolymer 12%,

[0056] Graphene oxide aqueous dispersion 3%,

[0057] Benzotriazole 3%,

[0058] 37% zinc sulfate aqueous solution,

[0059] The mass fraction of the zinc sulfate aqueous solution is 12%.

[0060] The preparation method of the special corrosion inhibitor for brass in this embodiment is:

[0061] Weigh sulfonic acid methylamino polyepoxysuccinic acid, N, N'-diacetyl adipyl dihydrazide, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersion in proportion, and add them to the container in turn. Mix, heat to 80°C, add zinc sulfate aqueous solution dropwise within 1.5h, ultrasonically treat for 15min, then heat to 105°C, add benzotriazole, reflux for 0.5h, then cool the material to 75°C, filter while h...

Embodiment 3

[0063] The special corrosion inhibitor for brass in this embodiment includes the following components by mass percentage:

[0064] Sulfonate methylamino polyepoxysuccinic acid 40%,

[0065] N, N'-Diacetyl Adipyl Dihydrazide 22%,

[0066] Maleic acid-acrylic acid copolymer 15%,

[0067] Graphene oxide water dispersion 4%,

[0068] Benzotriazole 4%,

[0069] 15% zinc sulfate aqueous solution.

[0070] The mass fraction of the zinc sulfate aqueous solution is 12%.

[0071] The preparation method of the special corrosion inhibitor for brass in this embodiment is:

[0072] Weigh sulfonic acid methylamino polyepoxysuccinic acid, N, N'-diacetyl adipyl dihydrazide, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersion in proportion, and add them to the container in turn. Mix, heat to 65°C, add zinc sulfate aqueous solution dropwise within 2.0h, ultrasonic treatment for 20min, then heat to 105°C, add benzotriazole, reflux for 1h, then cool the material to 85°C, filter while hot, ...

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Abstract

The invention relates to a special corrosion inhibitor for brass and a preparation method thereof. Dihydrazide 20-30%, maleic acid-acrylic acid copolymer 12-30%, graphene oxide aqueous dispersion 3-5%, benzotriazole 3-6%, zinc sulfate aqueous solution 15-40%. The synergistic effect of the components of the special corrosion inhibitor for brass of the present invention can effectively improve the solubility of the compound, and after compounding, it can greatly improve the corrosion inhibition performance of brass, and at the same time it also has excellent scale inhibition and sterilization effects, which can Effectively realize the synergistic effect of pollutant physical adsorption and chemical adsorption, and can realize the trace elimination of pollutants. The production process is simple, no "three wastes" discharge, good stability and water solubility, the main components are biodegradable, non-toxic, phosphorus-free, non-polluting, non-corrosive, less dosage, low cost, and environmentally friendly.

Description

Technical field [0001] The invention belongs to the technical field of water treatment, and relates to a corrosion inhibitor, in particular to a corrosion inhibitor for brass and a preparation method thereof. Background technique [0002] Brass and its alloys are widely used in heat exchange systems in the power, shipbuilding and other industries because of their good thermal conductivity, mechanical processing, and corrosion resistance. But in Cl - , SO 4 2- , HCO 3- In other corrosive media, copper and its alloys are prone to corrosion, shortening the service life. Some traditional high-efficiency copper corrosion inhibitors, such as benzotriazole and thiadiazole and their derivatives, have the disadvantages of being toxic, difficult to biodegrade, and product performance is uneven, corrosion inhibition performance is not high, and single function. Therefore, new green and environmentally friendly copper corrosion inhibitors must be developed to replace traditional copper corr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/04
Inventor 张宗峰张忠训杨森
Owner 山东应天环保能源有限公司