Corrosion prevention inhibitor for white copper B30

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

Active Publication Date: 2010-01-20
SHANGHAI UNIVERSITY OF ELECTRIC POWER +1
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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 white copper B30
  • Corrosion prevention inhibitor for white copper B30
  • Corrosion prevention inhibitor for white copper B30

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of copper-nickel B30 corrosion inhibitor

[0024] 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, and 10mg / L.

[0025] Corrosion inhibition effect of PESA single compound corrosion inhibitor on cupronickel B30 in simulated water

[0026] attached figure 1 It is the polarization curve measured after the white copper B30 electrode is immersed in the simulated aqueous solution containing different concentrations of PESA for 0.5h, in which curve 1, curve 2, curve 3, curve 4, and curve 5 respectively indicate that the PESA is 0mg / L and 1mg The Nyquist diagrams under / L, 2mg / L, 5mg / L, and 10mg / L, and the corresponding corrosion potential and corrosion current density data are shown in Table 1. The corrosion inhibition efficiency (η%) of the corrosion inhibitor is calculated according to the following formula:

[0027] η =...

Embodiment 2

[0033] A kind of copper-nickel B30 corrosion inhibitor

[0034] The solute is PESA, ZnSO4 and Na 2 SiO 3 , the solvent is deionized water, and 5 groups of nickel-copper B30 anti-corrosion and corrosion inhibitors are configured. The concentration of PESA in each group of copper-nickel B30 anti-corrosion and corrosion inhibitors is 2mg / L, Na 2 SiO 3 The concentration is 10mg / L, and ZnSO 4 The concentrations are 0mg / L, 2mg / L, 5mg / L, 10mg / L, 20mg / L, respectively.

[0035] Corrosion inhibition effect of cupronickel B30 anticorrosion and corrosion inhibitor on cupronickel B30 in simulated water

[0036] attached figure 2 Is in 2mg / L PESA, 10mg / L Na 2 SiO 3 Adding different concentrations of ZnSO in simulated water 4 The obtained Bode diagram, wherein curve 1, curve 2, curve 3, curve 4, curve 5 represent ZnSO 4 Bode plots at concentrations of 0mg / L, 2mg / L, 5mg / L, 10mg / L, and 20mg / L.

[0037] From attached figure 2 It can be seen that when the concentration of corrosion...

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Abstract

The invention discloses a corrosion prevention inhibitor for white copper B30, 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), Na2SiO3 and ZnSO4 based on the mass ratio of 0-10 to 0-20 to 0-20; the solvent is deionized water; the final inhibitor concentration is 10-50mg / L. When the concentration of the inhibitor prepared by combination is 2mg / L PESA+10mg / L Na2SiO3+20mg / L ZnSO4, the corrosion current density is the lowest, namely 0.3042mu A / cm2, and the corresponding inhibition efficiency is the highest, namely 93.05%. The corrosion prevention inhibitor for white copper B30 of the invention does no harm to the environment and has good inhibition effect on corrosion prevention of the white copper B30 in the system after being used by combination.

Description

technical field [0001] The invention relates to a cupronickel B30 anti-corrosion and 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 cupronickel B30, 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 disadvan...

Claims

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Application Information

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