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Environmental-friendly volatile corrosion inhibitor for carbon steel and preparation method of environmental-friendly volatile corrosion inhibitor

A gas phase corrosion inhibitor, a green and environmentally friendly technology, applied in the field of metal gas phase rust prevention, can solve the problems of poor corrosion inhibition performance and great environmental harm, and achieve the effects of less environmental pollution, poor corrosion inhibition performance and simple preparation method.

Active Publication Date: 2014-05-28
西安宇坤实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a green environment-friendly gas phase corrosion inhibitor for carbon steel, which solves the problems of poor corrosion inhibition performance and great environmental damage of existing gas phase corrosion inhibitors

Method used

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  • Environmental-friendly volatile corrosion inhibitor for carbon steel and preparation method of environmental-friendly volatile corrosion inhibitor
  • Environmental-friendly volatile corrosion inhibitor for carbon steel and preparation method of environmental-friendly volatile corrosion inhibitor

Examples

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preparation example Construction

[0020] The preparation method of above-mentioned corrosion inhibitor comprises the following steps:

[0021] Step 1, according to the required volume of corrosion inhibitor, weigh 0.8g / L~1.2g / L sodium silicate, 1.8g / L~2.3g / L alanine, 6.8g / L ~8.3g / L sodium benzoate and 3.8g / L~4.5g / L ammonium benzoate;

[0022] Step 2, dissolving the sodium silicate, alanine, sodium benzoate and ammonium benzoate weighed in the step 1 with 1 / 4 volume of distilled water respectively, and stirring for 5-10 minutes to obtain sodium silicate solution, alanine acid solution, sodium benzoate solution and ammonium benzoate solution;

[0023] Step 3, the sodium silicate solution, alanine solution, sodium benzoate solution and ammonium benzoate solution obtained in the step 2 were left to stand for 4-6 minutes respectively, and then these four solutions were mixed and stirred evenly to obtain the product.

[0024] The role of each component of the corrosion inhibitor:

[0025] Sodium silicate: Molecul...

Embodiment 1

[0031] Step 1, configure 1L corrosion inhibitor, weigh 1g sodium silicate, 2g alanine, 8g sodium benzoate and 4g ammonium benzoate respectively;

[0032] Step 2, dissolving the sodium silicate, alanine, sodium benzoate and ammonium benzoate weighed in step 1 with 250mL of distilled water respectively, stirring for 5min to obtain sodium silicate solution, alanine solution and sodium benzoate solution respectively and ammonium benzoate solution;

[0033] Step 3, the sodium silicate solution, the alanine solution, the sodium benzoate solution and the ammonium benzoate solution obtained in the step 2 were left to stand for 5 minutes, and then these four solutions were mixed and stirred evenly to obtain the product.

[0034] Coat the prepared corrosion inhibitor on the anti-rust base paper or plastic film within 24 hours to make it into gas phase anti-rust paper or gas phase anti-rust film; then treat the surface of the anti-rust carbon steel into a clean, smooth, dry, and rust-fr...

Embodiment 2

[0040] Step 1, configure 1L corrosion inhibitor, weigh 0.8g sodium silicate, 1.8g alanine, 6.8g sodium benzoate and 3.8g ammonium benzoate respectively;

[0041] Step 2, dissolving the sodium silicate, alanine, sodium benzoate and ammonium benzoate weighed in step 1 with 250mL of distilled water respectively, stirring for 7min to obtain sodium silicate solution, alanine solution and sodium benzoate solution respectively and ammonium benzoate solution;

[0042] Step 3, the sodium silicate solution, the alanine solution, the sodium benzoate solution and the ammonium benzoate solution obtained in the step 2 were left to stand for 4 minutes, and then these four solutions were mixed and stirred evenly to obtain the product.

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Abstract

An environmental-friendly volatile corrosion inhibitor for carbon steel comprises sodium silicate with the mass-volume concentration of 0.8 g / L-1.2 g / L, alanine with the mass-volume concentration of 1.8 g / L-2.3 g / L, sodium benzoate with the mass-volume concentration of 6.8 g / L-8.3 g / L, and ammonium benzoate with the mass-volume concentration of 3.8 g / L-4.5 g / L, dissolved in distilled water. A preparation method of the environmental-friendly volatile corrosion inhibitor comprises the following steps: respectively weighing the sodium silicate, alanine, sodium benzoate and ammonium benzoate according to the mass-volume concentrations; respectively dissolving in distilled water with the volumes of 1 / 4 of those of the solutes, and uniformly stirring; after the four solutions are stilled, mixing and uniformly stirring. The environmental-friendly volatile corrosion inhibitor is formed by compounding the sodium silicate, alanine, sodium benzoate and ammonium benzoate, is environmental-friendly and efficient, has little pollution to the environment, has a good synergistic effect, and solves the problems that the conventional volatile corrosion inhibitor is poor in corrosion-inhibition performance and generates more pollution, adopts the simple preparation method, is convenient to use, and can prolong the service life of the carbon steel.

Description

technical field [0001] The invention belongs to the technical field of metal vapor phase rust prevention, and in particular relates to an environment-friendly gas phase corrosion inhibitor for carbon steel, and also relates to a preparation method of the corrosion inhibitor. Background technique [0002] The vapor phase antirust packaging technology is to place a certain amount of vapor phase corrosion inhibitor (Volatile Corrosion Inhibitor VCI for short) in the packaging container or storage space, or vapor phase antirust paper and vapor phase plastic film coated with vapor phase antirust agent, the vapor phase antirust The agent continuously and slowly volatilizes the antirust gas, forming a certain vapor pressure, filling the storage space, and even the gaps of equipment components, effectively inhibiting the corrosion of metal parts. This method is also called gas phase storage or gas phase antirust technology. [0003] In order to meet the requirements of clean product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/02
Inventor 黄颖为杨永莲张英英
Owner 西安宇坤实业有限公司
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