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Preparing process of gas phase corrosion inhibitor

A gas-phase corrosion inhibitor and solution technology, which is applied in the field of preparation of gas-phase corrosion inhibitors, can solve the problems of damaging the release rate of gas-phase corrosion inhibitors and the deterioration of the anti-corrosion effect of gas-phase corrosion inhibitors. Application performance, improvement of gas phase corrosion inhibition ability, fine particle size effect

Active Publication Date: 2009-08-19
连云港市东森科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the new gas-phase antirust composite materials made by combining gas-phase corrosion inhibitors and desiccants are mostly through simple mechanical composite methods, and the content of desiccants is much higher than that of the corresponding gas-phase corrosion inhibitors. , because the desiccant has a strong tendency to absorb environmental moisture, which will impair the release rate of the gas-phase corrosion inhibitor components, resulting in poor anti-corrosion effect of the gas-phase corrosion inhibitor

Method used

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  • Preparing process of gas phase corrosion inhibitor
  • Preparing process of gas phase corrosion inhibitor
  • Preparing process of gas phase corrosion inhibitor

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Weigh an appropriate amount of montmorillonite, disperse it in deionized water, make a slurry, activate the montmorillonite, stir for 24 hours, take the suspension of the solution, add a certain amount of morpholine to it, heat up to 80°C, and keep the temperature for 4-5 hour, at this moment, the solution evaporates and precipitates out a solid; add a certain amount of formaldehyde, stand for 4 hours, no obvious phenomenon; add a certain amount of dicyclohexylamine, stand for 3 hours, the solution is layered; the benzoic acid and acetone Add the mixed solution and let it stand for 8 hours to form a white slurry (note: during this process, continuous stirring is required), disperse the slurry in deionized water, and filter with suction to obtain a white powder, which is blown dry at 80°C , to obtain 52g of gas phase corrosion inhibitor 1.

Embodiment 2

[0017] 20 g of montmorillonite was formulated into a solution (5% by mass fraction), allowed to stand for a period of time, and the upper suspension was taken for later use. Add 30% cetyltrimethylammonium bromide solution (concentration is 105mmol / 100g soil) when 80 ℃, stir with suction after 1 hour, rinse 3-4 times with deionized water to minimize Br - , placed in an oven and dried at 120°C for 4 hours, then ground into a 500-mesh powder to obtain organic montmorillonite. Take 1.0g of modified montmorillonite and add 20ml of morpholine, stir at 50°C for 1 hour, slowly add 19.2ml of formaldehyde solution dropwise while stirring, observe the phenomenon after stirring for 2 hours, add 46ml of dicyclohexylamine dropwise, observe Phenomenon, after stirring for 3 hours, add benzoic acid solution (28g benzoic acid is dissolved in 40ml deionized water), observe the phenomenon, continue to stir for 4 hours, carry out suction filtration, put into oven drying, obtain 75g gas phase corro...

Embodiment 3

[0019] Weigh an appropriate amount of montmorillonite, disperse it in the ethanol solution, make a slurry, activate the montmorillonite, stir for 24 hours, take the suspension of the solution, add 5g of monoethanolamine to the above solution, mix and stir, dissolve 12g of benzoic acid In the ethanol solution, the two solutions were mixed with each other under constant stirring to produce a white precipitate, which was filtered by suction to obtain 15 g of gas phase corrosion inhibitor 3.

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Abstract

The preparation process of gas phase corrosion inhibitor includes the following steps: 1. dispersing montmorillonite into deionized water, pulping, taking the suspension, adding morpholine, and heating to evaporate solvent and separating out crystal; 2. adding formaldehyde to the solution, letting stand, adding dicyclohexane, letting stand, adding mixed solution of benzoic acid and acetone, letting stand to form while slurry, dispersing the slurry in deionized water, suction filtering, and drying at 80 deg.c to obtain target product. By means of in-situ intercalating synthesis process, the present invention prepares gas phase corrosion inhibitor with homogeneous structure, fine granulation, and improved volatilizing capacity and corrosion inhibiting performance.

Description

technical field [0001] The invention relates to a corrosion inhibitor for preventing and delaying metal corrosion, and more specifically relates to a preparation method of a vapor phase corrosion inhibitor. Background technique [0002] Vapor phase inhibitor (VPI for short), also known as volatile corrosion inhibitor (VCI for short), is a gas that can automatically volatilize at room temperature and adsorb on the surface of the metal, thereby preventing corrosion. Anticorrosion chemicals for metal corrosion. Vapor-phase corrosion inhibitors are easy to use, clean and clean, and have become an important direction in the development of atmospheric corrosion prevention technology. Vapor Phase corrosion inhibitor drying material (Vapor Phase corrosion inhibitor desiccant material) is a new type of Vapor Phase Corrosion Inhibitor combined with a desiccant, which is made by treating the vapor phase corrosion inhibitor solution with a desiccant, heating and evaporating water. Com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/02
Inventor 高立新张大全
Owner 连云港市东森科技发展有限公司
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