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Gas-phase corrosion inhibitor used for carbon steel, and preparation method, application method, and purpose thereof

A gas-phase corrosion inhibitor and carbon steel technology, which is applied in the field of metal vapor-phase rust prevention, can solve the problems of low corrosion inhibition performance and toxicity of corrosion inhibitors, and achieve the effects of excellent corrosion inhibition performance, simple steps, and low environmental pollution

Active Publication Date: 2013-07-24
杨凌天英包装印务有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of this invention is to provide a kind of vapor phase corrosion inhibitor for carbon steel, to solve the corrosion inhibition performance of existing corrosion inhibitor is low, the problem of toxicity

Method used

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  • Gas-phase corrosion inhibitor used for carbon steel, and preparation method, application method, and purpose thereof
  • Gas-phase corrosion inhibitor used for carbon steel, and preparation method, application method, and purpose thereof
  • Gas-phase corrosion inhibitor used for carbon steel, and preparation method, application method, and purpose thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 30% of phytic acid, 40% of tannic acid and 30% of sodium silicate according to the mass percentage, put the weighed phytic acid, tannic acid and sodium silicate into distilled water respectively to prepare phytic acid solution , tannic acid solution and sodium silicate solution, its mass-volume concentration is 27g / L, 40.5g / L and 37g / L respectively, then these three kinds of solutions are all left to stand for 3 minutes and then mixed, stirred for 10 minutes to make it Fully mixed, a gas phase corrosion inhibitor for carbon steel of the present invention is obtained.

[0032] The method of using the vapor phase corrosion inhibitor for carbon steel is as follows: when the vapor phase corrosion inhibitor is prepared for 12 hours, the vapor phase corrosion inhibitor is coated on the antirust base paper to make it into vapor phase antirust paper; Then treat the antirust 45# steel surface to be clean, dry and free of foreign matter; finally, wrap the 45# surface tightl...

Embodiment 2

[0034] Weigh 27% of phytic acid, 45% of tannic acid, and 28% of sodium silicate according to mass percentage, respectively put the weighed phytic acid, tannic acid and sodium silicate into distilled water to prepare phytic acid solution , tannic acid solution and sodium silicate solution, its mass-volume concentration is 30g / L, 45g / L and 22g / L respectively, and then these three kinds of solutions are mixed after standing for 4 minutes, and stirred for 7.5 minutes to make it Fully mixed, a gas phase corrosion inhibitor for carbon steel of the present invention is obtained.

[0035] The above method of using the gas phase corrosion inhibitor for carbon steel is: when the gas phase corrosion inhibitor is prepared for 24 hours, the gas phase corrosion inhibitor is coated on the antirust base paper, and it is made into a gas phase antirust film; Then the surface of the antirust A3 steel is treated to be clean, dry and free of foreign matter; finally, the surface of the A3 steel is ...

Embodiment 3

[0037] Weigh respectively 22.5% of phytic acid, 40.5% of tannic acid, and 37% of sodium silicate according to mass percentage, and put the weighed phytic acid, tannic acid, and sodium silicate into distilled water to prepare phytic acid solution, monosodium silicate, respectively. Nitric acid solution and sodium silicate solution, its mass-volume concentration is 33g / L, 36g / L and 29.5g / L respectively, and then these three kinds of solutions are mixed after standing for 5 minutes, and stirred for 5 minutes to make it fully Mixing, a kind of vapor phase corrosion inhibitor for carbon steel of the present invention is obtained.

[0038] The method of using the above gas phase corrosion inhibitor for carbon steel is as follows: after the gas phase corrosion inhibitor is prepared, the gas phase corrosion inhibitor is immediately coated on the plastic film to make it into gas phase antirust paper; The rust-proof 45# steel surface is treated to be clean, dry and free of foreign matte...

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Abstract

The invention discloses a gas-phase corrosion inhibitor used for carbon steel. The corrosion inhibitor is composed of the materials of, by mass, 27-33% of phytic acid, 36-45% of tannic acid, and 22-37% of sodium silicate, wherein a total amount of the components is 100%. The invention also discloses a preparation method of the corrosion inhibitor used for carbon steel. The gas-phase corrosion inhibitor has an excellent corrosion inhibition performance upon carbon steel. The complex gas-phase corrosion inhibitor has the advantages of no toxicity, high efficiency, and low pollution to the environment. With the gas-phase corrosion inhibitor, problems of low corrosion inhibition performance and toxicity of existing corrosion inhibitors are solved.

Description

technical field [0001] The invention belongs to the technical field of metal gas-phase antirust, and relates to a gas-phase corrosion inhibitor for carbon steel. The invention also relates to a preparation method, a use method and an application of the gas-phase corrosion inhibitor for carbon steel. Background technique [0002] VCI technology is the VCI technology. VCI is the abbreviation of volatile corrosion inhibitor in English. It is a technology that uses vapor phase corrosion inhibitors to protect metals. It is a very attractive high-tech in the field of metal corrosion protection in the world today. The anticorrosion principle of vapor phase corrosion inhibitor is that it has the same volatility as camphor balls and a certain vapor pressure, which can volatilize a kind of gas and adhere to the metal surface to form a protective film, which inhibits the occurrence of electrochemical reactions and prevents corrosion. Some substances that accelerate metal corrosion atta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/02
Inventor 黄颖为王芳芳杨永莲
Owner 杨凌天英包装印务有限责任公司
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