Nucleic acid corrosion inhibitor and application thereof

A corrosion inhibitor and nucleic acid technology, applied in the field of nucleic acid corrosion inhibitors, can solve the problems of insignificant corrosion inhibition effect and large dosage, and achieve the effects of easy industrial promotion and application, large molecular weight, and overcoming large dosage.

Inactive Publication Date: 2016-08-24
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides a biological macromolecular nucleic acid corrosion inhibitor, which is suitable for metal anticorrosion in acidic medium, and can effectively solve the problem of large amount of corrosion inhibitors such as amino acids and other biological small molecules. Effect is not obvious and other shortcomings, while providing a wide source of raw materials, high efficiency, easy to make, non-toxic and harmless, biodegradable green environmental protection corrosion inhibitor, and can effectively prevent or slow down the corrosion of metals such as carbon steel in acidic solution Corrosion in

Method used

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  • Nucleic acid corrosion inhibitor and application thereof
  • Nucleic acid corrosion inhibitor and application thereof
  • Nucleic acid corrosion inhibitor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] According to mass percentage, 10% deoxyribose nucleic acid (DNA), 10% acetylenic alcohol, 20% potassium iodide and 60% ethanol are mixed with each other, and stirred evenly to obtain a nucleic acid corrosion inhibitor; the preparation concentration is 1.0mol / L hydrochloric acid solution as a corrosion medium , the prepared nucleic acid corrosion inhibitor was dropped into 1.0mol / L hydrochloric acid solution; X80 pipeline steel was used as the corrosion material; the corrosion inhibition effect was evaluated by electrochemical impedance spectroscopy. The specific operation is as follows:

[0024] Weigh 5 parts of the above-mentioned hydrochloric acid solution with a volume of 1.0 L respectively, and drop the above-mentioned nucleic acid corrosion inhibitors of different masses into 4 parts of the hydrochloric acid solution to obtain concentrations of 5 mg / L, 10 mg / L, and 15 mg / L respectively. , 20mg / L nucleic acid corrosion inhibitor solution, and the remaining 1 part of...

Embodiment 2

[0031] Ribonucleic acid (RNA) 15%, acetylenic alcohol 10%, potassium iodide 25% and ethanol 50% are mixed mutually according to mass percentage, stir, make nucleic acid corrosion inhibitor; Preparation concentration is 0.5mol / L hydrochloric acid solution as corrosion medium, The prepared nucleic acid corrosion inhibitor was dropped into 0.5mol / L hydrochloric acid solution, and X80 pipeline steel was used as corrosion material; and the corrosion inhibition effect was evaluated by weight loss method.

[0032] The specific operation is as follows:

[0033] Measure 6 parts of the above-mentioned hydrochloric acid solutions with a volume of 1.0L respectively, and drop the above-mentioned nucleic acid corrosion inhibitors of the same quality into 3 parts of the hydrochloric acid solutions respectively to obtain nucleic acid corrosion inhibitor solutions with the same concentration; the remaining 3 parts of hydrochloric acid The solution without nucleic acid corrosion inhibitor was u...

Embodiment 3

[0038] Ribonucleic acid (RNA) 5%, deoxyribonucleic acid (DNA) 5%, acetylenic alcohol 15%, potassium iodide 20% and ethanol 55% are mixed mutually according to mass percentage, stir, make nucleic acid corrosion inhibitor; Preparation concentration is 1.0 mol / L hydrochloric acid solution was used as corrosion medium, and the prepared nucleic acid corrosion inhibitor was dropped into 1.0mol / L hydrochloric acid solution, and X80 pipeline steel was used as corrosion material; Evaluation.

[0039] The result is as figure 2 with image 3 as shown, figure 2 with image 3 Scanning electron micrographs of X80 pipeline steel immersed in 1.0mol / L hydrochloric acid solution without and with corrosion inhibitor, reacting for 72 hours, figure 2 It is the surface morphology of the steel sheet without corrosion inhibitor, and the corrosion phenomenon is obvious; image 3 It is the surface morphology of the steel sheet with a certain amount of corrosion inhibitor added to form a dense a...

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Abstract

The invention relates to a nucleic acid corrosion inhibitor and application thereof, and belongs to the field of metal corrosion and protection and the field of application of biological macromolecules. The nucleic acid corrosion inhibitor comprises, by weight, 1-20% of nucleic acid, 10-30% of alkynol, 16-20% of pitting corrosion inhibitors and 30-70% of low-molecular-weight alcohol. The nucleic acid corrosion inhibitor and the application have the advantages that outermost layers of oxygen, nitrogen and phosphorus atoms on molecular structures of the nucleic acid contain unpaired electrons, a plurality of adsorption points can be formed by the atoms on metal surfaces under coordination effects, accordingly, generation of corrosion inhibition films can be promoted, the corrosion inhibition films cover the metal surfaces, and metal corrosion can be controlled or relieved; excellent metal corrosion inhibition effects can be realized by the nucleic acid corrosion inhibitor in acidic media, the corrosion inhibition rate can reach 90% at least, and the nucleic acid corrosion inhibitor is provided with biological macromolecular structures and is excellent in biodegradability; the nucleic acid corrosion inhibitor is low in usage and high in efficiency and cost performance and is environmentally friendly, and raw materials for the nucleic acid corrosion inhibitor can come from wide sources.

Description

technical field [0001] The invention belongs to the field of corrosion inhibitors, in particular to a nucleic acid corrosion inhibitor used for inhibiting metal corrosion. Background technique [0002] Metal materials are damaged by the action of the surrounding medium, which is called metal corrosion. Metal rusting is the most common form of corrosion. During corrosion, a chemical or electrochemical heterogeneous reaction occurs at the interface of the metal, turning the metal into an oxidized (ion) state. This will significantly reduce the mechanical properties of metal materials such as strength, plasticity, and toughness, destroy the geometry of metal components, increase wear between parts, deteriorate electrical and optical physical properties, and shorten the service life of equipment; for example, carbon steel is currently widely used One of the most common metal materials is a material with poor corrosion resistance, especially in acidic media, such as in the petr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/04
CPCC23F11/04
Inventor 庄稼胡克马柱杨波向艳文秋香郑超超
Owner SOUTHWEST PETROLEUM UNIV
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