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Brass anticorrosion corrosion inhibitor

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: 2009-12-23
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of anti-corrosion corrosion inhibitor for brass

[0028] The solute is polyepoxysuccinic acid, the solvent is deionized water, and the final concentration is 0mg / L, 1mg / L, 2mg / L, 5mg / L, and 10mg / L PESA single compound corrosion inhibitor.

[0029] Corrosion inhibition effect of PESA single compound corrosion inhibitor on brass in simulated water see attached figure 1 And attached figure 2 .

[0030] 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.

[0031] attached figure 1 And attached figure 2 It is the Nyquist diagram and Bode diagram measured after the brass electrode was soaked 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 represent polyepoxysuccinic acid (PESA ) are Nyquist plots and Bode plots at 0 mg / L, 1 mg / L, 2 mg / L,...

Embodiment 2

[0042] A kind of anti-corrosion corrosion inhibitor for brass

[0043] The solute is polyepoxysuccinic acid, ZnSO4 and Na 2 SiO 3 , the solvent is deionized water, and 6 groups of brass anti-corrosion and corrosion inhibitors are configured. The concentration of PESA in each group of brass anti-corrosion corrosion inhibitors is 2mg / L, ZnSO 4 The concentration is 5mg / L, and Na 2 SiO 3 The concentrations are 0mg / L, 10mg / L, 20mg / L, 30mg / L, 40mg / L, 50mg / L.

[0044]The corrosion inhibition effect of brass anti-corrosion and corrosion inhibitor on brass in simulated water is shown in the appendix Figure 4 And attached Figure 5 .

[0045] attached Figure 4 And attached Figure 5 Is in 2mg / L PESA, 5mg / LZnSO 4 Add different concentrations of Na to the simulated water 2 SiO 3 The obtained Nyquist diagram and Bode diagram, in which curve 1, curve 2, curve 3, curve 4 and curve 5 respectively represent Na 2 SiO 3 Nyquist plot and Bode plot at concentrations of 0mg / L, 10mg / ...

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Abstract

The invention discloses a brass anticorrosion corrosion inhibitor, belonging to the technical field of metal material anticorrosion and protection. The solute of the brass anticorrosion corrosion inhibitor is compounded by PESA, ZnSO4 and Na2SiO3 with sequential mass ratio of 0-10:0-5:0-40, the solvent is de-ionized water, and the finally obtained corrosion inhibitor has concentration of 0-55mg / L. The brass anticorrosion corrosion inhibitor of the invention does no harm to the environment, conforms to the requirement of sustained development, features available compound raw materials, and has better corrosion inhibition effect on brass in the system after being compounded and used. When the concentration of the compound corrosion inhibitor is 2mg / LPESA+5mg / L ZnSO4+40mg / L Na2SiO3, the corrosion current density thereof is the lowest of 3.776 mu A / cm, and the corresponding corrosion efficiency thereof is also the highest of 84.90%.

Description

technical field [0001] The invention relates to a brass 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 brass, 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 o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/08C23F11/18C23F11/173
Inventor 徐群杰蔡晶晶丁斯婧
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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