Environment-friendly vapor phase corrosion inhibitor and preparation method thereof

A gas-phase corrosion inhibitor, an environment-friendly technology, applied in the field of environment-friendly gas-phase corrosion inhibitor and its preparation, can solve problems such as economic loss, metal corrosion, and performance degradation

Active Publication Date: 2020-06-12
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, metal has a fatal flaw that can cause corrosion. Once the metal material is corroded, its performance in all aspects will be greatly reduced, which will bring huge economic losses to people.
[0004] Therefore, coating a corrosion inhibitor on a metal substrate can slow down corrosion, but the current corrosion inhibitor components contain toxic components, and imidazoline and its derivatives are the most widely used corrosion inhibitors. Therefore, there is an urgent need to develop a Environmentally friendly and non-toxic corrosion inhibitor

Method used

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  • Environment-friendly vapor phase corrosion inhibitor and preparation method thereof

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preparation example Construction

[0063] As some optional embodiments, the preparation method of the integrated sustained-release material includes:

[0064] According to the first mass part, dopamine, N,N-dimethylformamide, N,N'-carbonyldiimidazole, triethylamine and acetic acid are mixed and reacted to obtain a reaction precipitate. Wash and dry to obtain an integrated sustained-release material.

[0065] The above preparation method does not have an amide condensation reaction, wherein N,N-dimethylformamide is used as solvent, N,N'-carbonyldiimidazole is used as catalyst, acetic acid is used as carboxylic acid source, dopamine is used as amine source, and triethylamine is used to adjust pH.

[0066] As some optional embodiments, the reaction includes: reacting for 12-24 hours under the conditions of a temperature of 15-35° C. and a stirring rate of 500-1000 rpm / min.

[0067] The temperature is limited to 15-35°C. If the temperature is too high, the amide bond will be broken, which is not conducive to the rea...

Embodiment 1

[0085] Preparation of integrated corrosion-inhibiting materials:

[0086] Take 15 parts of dopamine and add it to the three-necked flask, add 100 parts of N,N-dimethylformamide to it, then take 5 parts of N,N'-carbonyldiimidazole, and 5 parts of triethylamine and add it to the three-necked flask, Finally, 6 parts of acetic acid were added to the three-necked flask, the temperature was 15-35 °C, and the stirring speed was 500 rpm, and the reaction was carried out for 12 hours. An all-in-one material for dopamine and acetic acid was prepared and set aside.

[0087] Preparation of environment-friendly gas phase corrosion inhibitor:

[0088] Take 10 parts of the integrated material prepared in step (1), 5 parts of aminotrimethylene phosphonic acid, 5 parts of L-alanine, 1 part of sodium dodecylbenzenesulfonate, 3 parts of phytic acid, and 10 parts of urea, 1 part of flavonoids, 5 parts of sodium gluconate, 100 parts of deionized water, mechanical stirring for 10 minutes, stirrin...

Embodiment 2

[0090] Preparation of integrated corrosion-inhibiting materials:

[0091] Take 20 parts of dopamine and add it to the three-necked flask, add 150 parts of N,N-dimethylformamide to it, then take 8 parts of N,N'-carbonyldiimidazole, and 8 parts of triethylamine and add it to the three-necked flask, Finally, 10 parts of acetic acid was added to the three-necked flask, the temperature was 15-35 °C, and the stirring speed was 700 rpm, and the reaction was carried out for 18 hours. An all-in-one material for dopamine and acetic acid was prepared and set aside.

[0092] Preparation of environment-friendly gas phase corrosion inhibitor:

[0093] Take 15 parts of the integrated material prepared in step (1), 7 parts of hydroxyethylidene diphosphonic acid, 6 parts of polyaspartic acid, 2 parts of sodium dodecylbenzene sulfonate, 3 parts of phytic acid, and 15 parts of urea , 2 parts of flavonoids, 7 parts of sodium gluconate, 120 parts of deionized water, mechanical stirring for 12min...

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Abstract

The invention particularly relates to an environment-friendly vapor phase corrosion inhibitor and a preparation method thereof, and belongs to the field of corrosion prevention. The environment-friendly vapor phase corrosion inhibitor comprises the following components in parts by mass: 10-20 parts of an integrated slow-release material, 5-10 parts of phosphoric acid, 5-10 parts of amino acid, 1-5parts of a surfactant, 3-5 parts of phytic acid, 10-20 parts of urea, 1-5 parts of flavone, 5-10 parts of sodium gluconate and 100-150 parts of deionized water, wherein the integrated slow-release material comprises the following components in parts by mass: 15-30 parts of dopamine, 100-200 parts of N, N dimethylformamide, 5-10 parts of N, N'-carbonyl diimidazole, 5-10 parts of triethylamine and6-12 parts of acetic acid. According to the environment-friendly vapor phase corrosion inhibitor provided by the embodiment of the invention, adopted corrosion inhibition additives are environment-friendly and non-toxic materials, replace the traditional imidazoline toxic environment-friendly vapor phase corrosion inhibitor, do not cause harm to the environment and human bodies, and meet the national requirements of green, environment-friendly and sustainable materials.

Description

technical field [0001] The invention belongs to the field of anti-corrosion, and particularly relates to an environment-friendly gas-phase corrosion inhibitor and a preparation method thereof. Background technique [0002] Corrosion inhibitors are chemical substances or compounds that can prevent or slow down the corrosion of materials when they exist in the environment (medium) in an appropriate concentration and form, so environmentally friendly gas phase corrosion inhibitors can also be called corrosion inhibitors. [0003] Metal is widely used in construction and manufacturing due to its unique mechanical properties, and its own material properties make other materials irreplaceable. However, metal has a fatal defect that will corrode. Once the metal material corrodes, its performance in all aspects will be greatly reduced, which will bring huge economic losses to people. [0004] Therefore, coating the corrosion inhibitor on the metal substrate can slow down the corros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/02
CPCC23F11/02
Inventor 刁鑫林曹建平杨建炜王胜荣
Owner SHOUGANG CORPORATION
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