Vapor-phase corrosion inhibitor and preparation method thereof

A gas-phase corrosion inhibitor and organic solvent technology, applied in the field of gas-phase corrosion inhibitor and its preparation, can solve the problems of insignificant effect, large toxic and side effects, and achieve the effects of remarkable effect, small toxic and side effects, and easy availability of raw materials

Inactive Publication Date: 2014-09-24
荆门铸鼎新材料有限公司 +1
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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a gas-phase corrosion inhibitor and its preparation method, the purpose of which is to select the components of the gas-phase corrosion inhibitor and adjust its ratio, thereby solving the problem of the current gas-phase corrosion inhibitor Technical problems with insignificant effects and large toxic and side effects

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  • Vapor-phase corrosion inhibitor and preparation method thereof

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[0023] The preparation method of the vapor phase corrosion inhibitor provided by the present invention comprises the following steps: first uniformly mixing the alkyne amine and water in the formula ratio to obtain an aqueous solution of the alkyne amine; then, adding an organic solvent in the formula ratio to the aqueous solution of the alkyne amine and mixing uniformly , to obtain the vapor phase corrosion inhibitor. The alkyne amine is preferably propargyl amine; the organic solvent is preferably a polar aprotic organic solvent, more preferably dimethyl sulfoxide.

[0024] Among the gas-phase corrosion inhibitors provided by the present invention, alkyne amines have a higher saturated vapor pressure due to their strong volatility, but the volatility of the alkyne amines used alone is too strong, resulting in unstable corrosion inhibitors. The present invention makes the corrosion inhibitor more stable by adding an organic solvent, and by selecting the type of alkyne amine a...

Embodiment 1

[0027] A gas phase corrosion inhibitor comprises 8% of propargyl amine and 15% of dimethyl sulfoxide organic solvent according to mass percentage, and the balance is water.

[0028] The gas-phase corrosion inhibitor is prepared as follows. First, according to the mass parts, 8 parts of propargylamine and 77 parts of water are uniformly mixed to obtain an aqueous solution of propargylamine; then, dimethyl Sulfoxide organic solvent, mixed evenly, can get clear light yellow vapor phase corrosion inhibitor. Described water is twice distilled water.

Embodiment 2

[0030] A gas phase corrosion inhibitor comprises 10% of propargyl amine and 10% of dimethyl sulfoxide organic solvent according to mass percentage, and the balance is water.

[0031] The gas phase corrosion inhibitor is prepared as follows. First, according to the mass parts, 10 parts of propargylamine and 80 parts of water are uniformly mixed to obtain an aqueous solution of propargylamine; The sulfone organic solvent is evenly mixed to obtain a clear light yellow vapor phase corrosion inhibitor. Described water is twice distilled water.

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Abstract

The invention discloses a vapor-phase corrosion inhibitor and a preparation method thereof. The vapor-phase corrosion inhibitor comprises the following components in percentage by mass: 8-15% of alkynyl amine, 8-15% of organic solvent and the balance of water. The preparation method comprises the following steps: uniformly mixing the alkynyl amine and water according to the formula proportion to obtain an alkynyl amine water solution; and adding the organic solvent into the alkynyl amine water solution according to the formula proportion, and uniformly mixing to obtain the vapor-phase corrosion inhibitor. The vapor-phase corrosion inhibitor has higher saturated vapor pressure, has obvious corrosion inhibition effect on carbon steel atmospheric corrosion, and has enduring protection action. Compared with the bicyclohexylamine nitrite, cyclohexylamine carbonate and other vapor-phase corrosion inhibitors, the vapor-phase corrosion inhibitor disclosed by the invention has smaller toxic and side effects and more obvious corrosion inhibition effect. The vapor-phase corrosion inhibitor disclosed by the invention has the advantages of accessible raw materials, simple preparation technique and small toxic and side effects, can effectively lower the corrosion rate of the carbon steel atmospheric corrosion, and can prolong the service life of various steel apparatuses and facilities.

Description

technical field [0001] The invention belongs to the technical field of corrosion resistance, and more specifically relates to a gas phase corrosion inhibitor and a preparation method thereof. Background technique [0002] Due to its excellent mechanical properties and low price, steel is widely used as raw materials for various open-air devices and processed into various equipment and instruments. These instruments and equipment are often susceptible to atmospheric corrosion due to changes in atmospheric temperature and humidity during open-air use, which affects their use and life, and causes huge economic losses. In my country, the annual loss caused by atmospheric corrosion accounts for more than half of all corrosion types. Atmospheric corrosion can be controlled in many ways, such as the use of organic, inorganic or metal coatings, the use of alloys instead or the use of vapor phase corrosion inhibitors. [0003] In recent years, vapor phase corrosion inhibitors have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/02
Inventor 陈振宇陈娟曹亚敏金邦能彭军军
Owner 荆门铸鼎新材料有限公司
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