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Application of acethydrazide type compound containing furan nitrogen heterocycle and being used as corrosion inhibitor

A compound, the technology of acetylhydrazine, which is applied in the field of application of acetylhydrazide compounds as corrosion inhibitors, can solve the problems of loss of thermal, electrical and mechanical properties, few reports on technology and product quantity, corrosion damage, etc., and achieve excellent corrosion inhibition Performance, excellent durability, effect of suppressing damage

Inactive Publication Date: 2015-06-03
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 is ranked after hydrogen in the metal activity sequence table, and its activity in oxidation reaction is poor, copper is still very susceptible to various degrees of oxidation in systems containing corrosive media such as chloride ions, sulfates, and nitrates. Corrosion damage, loss of various excellent thermal, electrical and mechanical properties, bringing huge losses or even disasters
[0004] At present, although there have been many literatures on seawater corrosion inhibitors for metallic copper, there are few reports on the technology and the number of products that can be applied in actual production.

Method used

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  • Application of acethydrazide type compound containing furan nitrogen heterocycle and being used as corrosion inhibitor
  • Application of acethydrazide type compound containing furan nitrogen heterocycle and being used as corrosion inhibitor
  • Application of acethydrazide type compound containing furan nitrogen heterocycle and being used as corrosion inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 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 0.01g, the temperature is 25°C, pH=7.0, and the immersion time is 20 days.

[0031] The corrosion inhibitor is: dissolve the compound of formula one in ethanol, and its weight ratio to ethanol is 1:10, and then use an ultrasonic disperser to ultrasonically disperse the mixed solution for 20 minutes at room temperature to completely dissolve it; then, put The fully dissolved solution was added to the OP-10 emulsifier (C 34 h 62 o 11 ) (Tianjin Damao Chemical Instrument Supply Station), the weight ratio of OP-10 emulsifier to ethanol is 1:1, and stirred at room temperature until a uniform microemulsion ...

Embodiment 2

[0034] 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 0.1g, the temperature is 25°C, pH=7.0, and the immersion time is 20 days.

[0035] The corrosion inhibitor is: dissolve the compound of formula one in ethanol, and its weight ratio to ethanol is 1:10, and then use an ultrasonic disperser to ultrasonically disperse the mixed solution for 20 minutes at room temperature to completely dissolve it; then, put The fully dissolved solution was added to the OP-10 emulsifier (C 34 h 62 o 11 ) (Tianjin Damao Chemical Instrument Supply Station), the weight ratio of OP-10 emulsifier to ethanol is 1:1, and stirred at room temperature until a uniform microemulsion a...

Embodiment 3

[0038] 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=7.0, and the immersion time is 20 days.

[0039] The corrosion inhibitor is: dissolve the compound of formula one in ethanol, and its weight ratio to ethanol is 1:10, and then use an ultrasonic disperser to ultrasonically disperse the mixed solution for 20 minutes at room temperature to completely dissolve it; then, put The fully dissolved solution was added to the OP-10 emulsifier (C34 h 62 o 11 ) (Tianjin Damao Chemical Instrument Supply Station), the weight ratio of OP-10 emulsifier to ethanol is 1:1, and stirred at room temperature until a uniform microemulsion app...

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Abstract

The invention relates to seawater corrosion inhibitor, in particular to an application of acethydrazide type compound containing furan nitrogen heterocycle and being used as corrosion inhibitor. According to the application of 5-[3-(3'-methyl)-4-(2'-furan methine) imino group-(1, 2, 4) s-triazole] sulfo-N-(2'-furan) methine acethydrazide being used as the corrosion inhibitor, the structural formula of the 5-[3-(3'-methyl)-4-(2'-furan methine) imino group-(1, 2, 4) s-triazole] sulfo-N-(2'-furan) methine acethydrazide is shown as the first formula. The corrosion inhibitor is low in dosage, low in toxicity, high in efficiency, good in continuous acting capability, and capable of effectively restraining corrosion destruction of metallic copper, and has a broad application prospect.

Description

technical field [0001] The invention relates to a seawater corrosion inhibitor for copper, in particular to the application of an acetylhydrazine compound containing a furan nitrogen heterocycle as a 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, and weldability, and has been widely used in industry, agriculture, and military fields for a long time. However, although co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/16
Inventor 李伟华田惠文侯保荣
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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