A kind of vapor phase corrosion inhibitor and preparation method thereof

Abstract

The invention discloses a gas phase corrosion inhibitor and a preparation method thereof. The vapor phase corrosion inhibitor comprises 8% to 15% of alkyne amine and 8% to 15% of organic solvent according to mass percentage, and the balance is water. Its preparation method comprises the following steps: first, uniformly mix the alkyne amine and water in the formula ratio to obtain an aqueous solution of the alkyne amine; then, add an organic solvent in the formula ratio to the aqueous solution of the alkyne amine and mix evenly to obtain the gas phase corrosion inhibitor agent. The gas-phase corrosion inhibitor has a high saturated vapor pressure, has a significant corrosion inhibition effect on atmospheric corrosion of carbon steel, and has a long-lasting protective effect. At the same time, compared with gas-phase corrosion inhibitors such as dicyclohexylamine nitrite and cyclohexylamine carbonate, the gas-phase corrosion inhibitor provided by the invention has less toxic and side effects and more significant corrosion inhibition effect. The gas-phase corrosion inhibitor provided by the invention has easy-to-obtain raw materials, simple preparation process, and less toxic and side effects, can effectively reduce the corrosion rate of atmospheric corrosion of carbon steel, and prolong the service life of various iron and steel instruments and equipment.

Description

Technical field [0001] The invention belongs to the field of anti-corrosion technology, and more specifically relates to a vapor phase corrosion inhibitor and a preparation method thereof. Background technique [0002] Because of its excellent mechanical properties and low price, steel is widely used as raw materials for various outdoor installations 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. The annual loss caused by atmospheric corrosion in our country accounts for more than half of all types of corrosion. Atmospheric corrosion can be controlled by many methods, such as the use of organic, inorganic or metal coatings, the use of alloys instead of or the use of vapor phase corrosion inhibitors. [0003] In recent years, vapor phase corrosion inhibito...

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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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