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
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[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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