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Multi-metal surface protective agent and preparation method and application thereof

A surface protective agent and multi-metal technology, applied in the field of water circulation system, can solve the problem of high requirements for circulating water

Active Publication Date: 2020-10-23
烟台康恩环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the corrosion inhibitors in the prior art have high requirements for circulating water, thereby providing a multi-metal surface protective agent and its preparation method and application

Method used

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  • Multi-metal surface protective agent and preparation method and application thereof
  • Multi-metal surface protective agent and preparation method and application thereof
  • Multi-metal surface protective agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The present embodiment provides a kind of multi-metal surface protective agent, and its preparation method is as follows:

[0058] Preparation of film former:

[0059] Dissolve 5kg of benzotriazole in 5.5kg of ethanol to obtain a mixed solution for subsequent use;

[0060] Add 25kg of deionized water into the reaction kettle and heat it to 60°C with stirring, then add 15kg of undecanedioic acid, 10kg of dodecanedioic acid, 12kg of gluconic acid and 15kg of benzoic acid, heat up to 90°C after adding, add 15kg of triethanolamine and 3kg of ethanolamine, and continue to stir for 0.5h: then add the above mixed solution and raise the temperature to 110°C and stir for 1.5h, then cool down to normal temperature naturally to obtain the film-forming agent for later use.

[0061] Preparation of sealants:

[0062] After mixing 30kg of deionized water and 10kg of ammonium citrate evenly, add 20kg of sebacic acid and 10kg of adipic acid at 80°C, then raise the temperature to 88°C ...

Embodiment 2

[0070] The present embodiment provides a kind of multi-metal surface protective agent, and its preparation method is as follows:

[0071] Preparation of film former:

[0072] Dissolve 10kg of benzotriazole in 10kg of ethanol to obtain a mixed solution for subsequent use;

[0073] Add 20kg of deionized water into the reaction kettle and heat it up to 60°C with stirring, then add 20kg of undecanedioic acid, 15kg of dodecanedioic acid, 15kg of gluconic acid and 6kg of benzoic acid, heat up to 80°C after adding, add 20kg of triethanolamine and 8kg of ethanolamine, and continue to stir for 1.5h: then add the above mixed solution and raise the temperature to 120°C and stir for 2.5h, then cool down to normal temperature naturally to obtain the film-forming agent for later use.

[0074] Preparation of sealants:

[0075]After mixing 20kg of deionized water and 15kg of ammonium citrate evenly, add 25kg of sebacic acid and 15kg of adipic acid at 85°C, then raise the temperature to 90°C...

Embodiment 3

[0083] The present embodiment provides a kind of multi-metal surface protective agent, and its preparation method is as follows:

[0084] Preparation of film former:

[0085] Dissolve 8kg of benzotriazole in 7.2kg of ethanol to obtain a mixed solution for subsequent use;

[0086] Add 16kg of deionized water into the reactor and heat it to 60°C with stirring, then add 10kg of undecanedioic acid, 20kg of dodecanedioic acid, 8kg of gluconic acid and 10kg of benzoic acid, after the addition is complete, heat up to 100°C, add 10kg of triethanolamine and 5kg of ethanolamine, and continue to stir for 1.0h: then add the above mixed solution and raise the temperature to 130°C and stir for 2.0h, then cool down to normal temperature naturally to obtain the film-forming agent for later use.

[0087] Preparation of sealants:

[0088] After mixing 25kg of deionized water and 5kg of ammonium citrate evenly, add 22kg of sebacic acid and 20kg of adipic acid at 75°C, then raise the temperatur...

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Abstract

The invention provides a multi-metal surface protective agent and a preparation method and application thereof. The multi-metal surface protective agent comprises the following raw materials in partsby weight: 15-21 parts of a closure agent, 43-55 parts of a film-forming agent, 9-15 parts of a catalyst and 17-23 parts of a pH adjusting agent r. The raw materials of the film forming agent compriseorganic acid, alcohol amine compound, benzotriazole and deionized water. The raw materials of the closure agent comprise organic dibasic acid, alcohol amine compound, ammonium citrate and deionized water. The catalyst comprises citric acid and lactic acid. The pH adjusting agent comprises methylbenzotriazole and triethylamine. The multi-metal surface protective agent provided by the invention canbe applied to a circulating water system, has no requirement on water quality in the water circulating system, is suitable for deionized water, soft water, underground water, surface water and the like, and has high hard water resistance, good reserve alkalinity, acid-base resistance and high-temperature resistance.

Description

technical field [0001] The invention relates to the technical field of water circulation systems, in particular to a multi-metal surface protective agent and its preparation method and application. Background technique [0002] With the rapid development of the economy and the rapid increase of the population, the shortage of water resources has become an important factor restricting the economic construction and development of our country. In my country, a large amount of water resources are used and consumed in industrial circulating water and urban heating circulating water. However, due to the oxidizing substances such as colloids, suspended solids, soluble salts of calcium, magnesium, potassium and other ions, and dissolved gases in the water, Scaling (calcium carbonate, calcium sulfate, barium sulfate, etc.) will inevitably occur in the circulating water during the application process. At the same time, the problems of bacteria breeding and corrosion under the scale are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/10C02F5/12C02F1/66C02F103/06C02F103/02
CPCC23F11/10C02F5/12C02F1/66C02F2103/06C02F2103/02C02F2303/08
Inventor 赵桂林金栋王同泽赵玉刚宋兆桐
Owner 烟台康恩环保科技有限公司
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