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Corrosion prevention inhibitor for copper

A corrosion inhibitor and anti-corrosion technology, applied in the field of corrosion and protection of metal materials, to achieve good corrosion inhibition effect

Inactive Publication Date: 2010-01-20
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on PESA on copper and its copper alloys, and on the compounding of PESA with other reagents to form efficient and environmentally friendly water treatment agents.

Method used

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  • Corrosion prevention inhibitor for copper
  • Corrosion prevention inhibitor for copper
  • Corrosion prevention inhibitor for copper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of copper corrosion inhibitor

[0026] The solute is PESA, the solvent is deionized water, and finally prepared into PESA single compound corrosion inhibitors with concentrations of 0mg / L, 1mg / L, 2mg / L, 5mg / L, 10mg / L, and 20mg / L.

[0027] Corrosion inhibition effect of PESA single compound corrosion inhibitor on copper in simulated water

[0028] In the measurement of AC impedance, the blank means that the simulated aqueous solution is used as the medium, and the addition amount of the corrosion inhibitor is 0mg / L.

[0029] attached figure 1 It is the Nyquist diagram measured after the copper electrode is soaked in the simulated aqueous solution containing different concentrations of PESA for 0.5h, where curve 1, curve 2, curve 3, curve 4, curve 5, curve 6, and curve 7 respectively indicate that the PESA is 0mg / L , 1mg / L, 2mg / L, 5mg / L, 10mg / L, 15mg / L, 20mg / L Nyquist plots.

[0030] The resistance value is used to judge the corrosion inhibition performance. The...

Embodiment 2

[0042] A kind of copper corrosion inhibitor

[0043] The solute is PESA, ZnSO4 and Na 2 SiO 3 , the solvent is deionized water, and three sets of copper anti-corrosion corrosion inhibitors are configured. The concentration of PESA in each group of copper anti-corrosion corrosion inhibitors is 2mg / L, Na 2 SiO 3 The concentration is 10mg / L, and ZnSO 4 The concentrations are 2mg / L, 4mg / L, 6mg / L respectively.

[0044] Corrosion inhibition effect of copper anti-corrosion and corrosion inhibitor on copper in simulated water

[0045] attached image 3 Is in 2mg / L PESA, 10mg / L Na 2 SiO 3 Adding different concentrations of ZnSO in simulated water4 The obtained Nyquist diagram, in which curve 1 represents that the concentration of corrosion inhibitor is 0, and curve 2 represents that the concentration of corrosion inhibitor is: 2mg / L PESA+10mg / L Na 2 SiO 3 +2mg / L ZnSO 4 , curve 3 represents the concentration of corrosion inhibitor: 2mg / L PESA+10mg / L Na 2 SiO 3 +4mg / L ZnSO ...

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Abstract

The invention discloses a corrosion prevention inhibitor for copper, belonging to the technical field of corrosion and protection of metal materials. The solute of the inhibitor is prepared by combining polyepoxy succinic acid (PESA), ZnSO4 and Na2SiO3 based on the mass ratio of 0-20 to 0-10 to 0-25; the solvent is deionized water; the final inhibitor concentration is 10-55mg / L. When the concentration of the inhibitor prepared by combination is 2mg / L PESA+4mg / L ZnSO4+10mg / L Na2SiO3, the corrosion current density is the lowest, namely 0.258mu A / cm2, and the corresponding inhibition efficiency is the highest, namely 83.92%. The corrosion prevention inhibitor for copper of the invention does no harm to the environment and has good inhibition effect on corrosion prevention of the copper in the system after being used by combination.

Description

technical field [0001] The invention relates to a copper anti-corrosion corrosion inhibitor, which belongs to the technical field of metal material corrosion and protection. Background technique [0002] At present, due to the intensification of metal corrosion, more and more corrosion inhibitors are used. Especially for the research on the corrosion inhibition of copper, some corrosion inhibitors currently used will more or less cause harm to the environment, which is not conducive to sustainable development. With the development of the national economy and society, water treatment technology for the purpose of resource conservation and environmental protection has developed rapidly, and the application of corrosion inhibitors is very common. The corrosion inhibitors currently studied are mainly organic substances containing N, S, O or other functional groups, such as BTA, which has been used in industry for several years. However, a serious disadvantage of this class of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/08C23F11/173C23F11/18
Inventor 徐群杰李阳丁斯婧
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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