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Application of triazole compound containing salicylaldehyde as high efficiency corrosion inhibitor

A technology containing salicylaldehyde and compounds, used in the application field of high-efficiency corrosion inhibitors, can solve the problems of scarcity of corrosion inhibitors, copper corrosion damage, loss of performance, etc., and achieve excellent corrosion inhibition performance, low cost, and the effect of inhibiting damage

Inactive Publication Date: 2013-07-31
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although copper ranks after hydrogen in the metal activity sequence table, and its activity is poor, copper is also very susceptible to corrosion damage to varying degrees in systems containing chloride ions, sulfates, nitrates and other corrosive media, thus losing Its original various performances may even bring huge disasters
[0004] At present, although there have been many reports on seawater corrosion inhibitors for metallic copper, the number of corrosion inhibitors that can be applied in actual production is extremely rare.

Method used

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  • Application of triazole compound containing salicylaldehyde as high efficiency corrosion inhibitor
  • Application of triazole compound containing salicylaldehyde as high efficiency corrosion inhibitor
  • Application of triazole compound containing salicylaldehyde as high efficiency corrosion inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The experimental material is red copper (99.999%). The compound of formula 1 is formulated as a corrosion inhibitor. The medium is 3.5% sodium chloride solution. The red copper product is immersed in the medium with the corrosion inhibitor at a temperature of 25°C and a pH of 7.5. The amount of medium used is 100L, the amount of the compound of formula 1 in the medium is 0.5g, the temperature is 25°C, pH=6.5, and the immersion time is 14 days.

[0026] Corrosion inhibitor is: the compound of formula one is dissolved in cyclohexane, and it and cyclohexane (C 4 h 12 ) in a weight ratio of 1:10, then ultrasonically disperse the mixed solution for 20 minutes at room temperature with an ultrasonic disperser to make it completely dissolved; then, add the fully dissolved solution to the OP-10 emulsifier (C 34 h 62 o 11 ) (Tianjin Damao Chemical Instrument Supply Station), the amount of OP-10 emulsifier added is the same as that of cyclohexane (C 4 h 12 ) in a weight ratio...

Embodiment 2

[0029] The experimental material is red copper (99.999%). The compound of formula 1 is formulated as a corrosion inhibitor. The medium is 3.5% sodium chloride solution. The red copper product is immersed in the medium with the corrosion inhibitor at a temperature of 25°C and a pH of 7.5. The amount of medium used is 100L, the amount of the compound of formula 1 in the medium is 1.0g, the temperature is 25°C, pH=6.5, and the immersion time is 14 days.

[0030] Corrosion inhibitor is: the compound of formula one is dissolved in cyclohexane, and it and cyclohexane (C 4 h 12 ) in a weight ratio of 1:10, then ultrasonically disperse the mixed solution for 20 minutes at room temperature with an ultrasonic disperser to make it completely dissolved; then, add the fully dissolved solution to the OP-10 emulsifier (C 34 h 62 o 11 ) (Tianjin Damao Chemical Instrument Supply Station), the amount of OP-10 emulsifier added is the same as that of cyclohexane (C 4 h 12 ) in a weight ratio...

Embodiment 3

[0033] The experimental material is red copper (99.999%). The compound of formula 1 is formulated as a corrosion inhibitor. The medium is 3.5% sodium chloride solution. The red copper product is immersed in the medium with the corrosion inhibitor at a temperature of 25°C and a pH of 7.5. The amount of medium used is 100L, the amount of the compound of formula 1 in the medium is 2.0g, the temperature is 25°C, pH=6.5, and the immersion time is 14 days.

[0034] Corrosion inhibitor is: the compound of formula one is dissolved in cyclohexane, and it and cyclohexane (C 4 h 12 ) in a weight ratio of 1:10, then ultrasonically disperse the mixed solution for 20 minutes at room temperature with an ultrasonic disperser to make it completely dissolved; then, add the fully dissolved solution to the OP-10 emulsifier (C 34 h 62 o 11 ) (Tianjin Damao Chemical Instrument Supply Station), the amount of OP-10 emulsifier added is the same as that of cyclohexane (C 4h 12 ) in a weight ratio ...

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Abstract

The invention relates to a corrosion inhibitor of copper in seawater or sodium chloride solution, that is a low toxicity and high efficiency corrosion inhibitor for inhibiting corrosion of metal copper and product thereof in seawater or sodium chloride medium and application thereof. The effective component is 2-{5-[3-(4'-methyl)phenyl-4-amino-(1, 2, 4) sym-triazole]}sulfo-N-[(2'-hydroxyphenyl) methane] acethydrazide. The product provided by the invention can effectively prevent general corrosion and partial corrosion of metal copper in the contact process of seawater or sodium chloride solution. The compound is already synthesized in the laboratory, and widely applied in the antibiosis experiment, but is not used as a metal corrosion inhibitor. The corrosion inhibitor provided by the invention has the advantages of small amount, few toxicity, high efficiency and long action time, and corrosion destroy of metal copper can be effectively inhibited and the product has a wide application prospect.

Description

technical field [0001] The invention relates to a seawater corrosion inhibitor for copper, in particular to the application of a salicylaldehyde-containing triazole compound as a high-efficiency corrosion inhibitor. Background technique [0002] With the continuous consumption of various resources on land, the development and utilization of marine resources has become an inevitable way to solve the current problem of resource depletion. However, seawater is a strong electrolyte solution, which is highly corrosive to metals, which greatly limits the development and utilization of marine resources. Therefore, only by solving the corrosion problem of metal materials in seawater can the development and utilization value of marine resources be truly reflected. [0003] Copper has excellent mechanical strength, machinability, electrical conductivity, weldability and other characteristics, and has been widely used in industry, military and civilian fields for a long time. However...

Claims

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Application Information

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IPC IPC(8): C23F11/16
Inventor 李伟华毕方晓麻福斌
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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