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Corrosion inhibitor suitable for dynamic strong alkaline cleaning of metal workpieces and preparation method of corrosion inhibitor

A metal workpiece and corrosion inhibitor technology, applied in the field of metal material processing, can solve the problems of unstable corrosion inhibitor performance and unsatisfactory corrosion inhibition performance, improve hydrophobicity and stability, enhance corrosion inhibition ability, and facilitate direct effect used

Active Publication Date: 2020-02-07
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is to provide a kind of corrosion inhibitor for metal workpiece alkali washing solution, to solve the unstable performance and unsatisfactory corrosion inhibition performance of the alkali washing solution corrosion inhibitor in the prior art;

Method used

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  • Corrosion inhibitor suitable for dynamic strong alkaline cleaning of metal workpieces and preparation method of corrosion inhibitor
  • Corrosion inhibitor suitable for dynamic strong alkaline cleaning of metal workpieces and preparation method of corrosion inhibitor
  • Corrosion inhibitor suitable for dynamic strong alkaline cleaning of metal workpieces and preparation method of corrosion inhibitor

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Effect test

Embodiment 1

[0022] The corrosion inhibitor that is applicable to the dynamic strong alkali cleaning of metal workpiece described in this embodiment, its preparation raw material comprises the component of following weight:

[0023]

[0024] The preparation method of the corrosion inhibitor suitable for dynamic strong alkali cleaning of metal workpieces described in this embodiment comprises the following steps:

[0025] (1) First add glycerol triglycidyl ether and cetyltrimethylammonium bromide in the formula quantity into the reaction kettle, start stirring, keep the temperature at 75° C., and add cystamine in the formula quantity to carry out the chain extension reaction for 2 hours;

[0026] (2) Then add the formulated amount of 4,4-diaminodiphenylmethane tetraglycidylamine, ethylenediamine and DMF, and continue the heat preservation reaction at 75°C for 3h;

[0027] (3) When the epoxy equivalent of the above-mentioned reactants is greater than 1000g / mol, add 4-imidazole ethylamine ...

Embodiment 2

[0030] The corrosion inhibitor that is applicable to the dynamic strong alkali cleaning of metal workpiece described in this embodiment, its preparation raw material comprises the component of following weight:

[0031]

[0032] The preparation method of the corrosion inhibitor suitable for dynamic strong alkali cleaning of metal workpieces described in this embodiment comprises the following steps:

[0033] (1) First add glycerol triglycidyl ether and cetyltrimethylammonium bromide in the formula quantity into the reaction kettle, start stirring, keep the temperature at 75° C., and add cystamine in the formula quantity to carry out the chain extension reaction for 2 hours;

[0034] (2) Then add the formulated amount of 4,4-diaminodiphenylmethane tetraglycidylamine, ethylenediamine and DMF, and continue the heat preservation reaction at 75°C for 3h;

[0035] (3) When the epoxy equivalent of the above-mentioned reactant is greater than 1000g / mol, add 4-imidazole ethylamine a...

Embodiment 3

[0038] The corrosion inhibitor that is applicable to the dynamic strong alkali cleaning of metal workpiece described in this embodiment, its preparation raw material comprises the component of following weight:

[0039]

[0040] The preparation method of the corrosion inhibitor suitable for dynamic strong alkali cleaning of metal workpieces described in this embodiment comprises the following steps:

[0041] (1) First add glycerol triglycidyl ether and cetyltrimethylammonium bromide in the formula quantity into the reaction kettle, start stirring, keep the temperature at 70° C., and add cystamine in the formula quantity to carry out the chain extension reaction for 2 hours;

[0042] (2) Then add the formulated amount of 4,4-diaminodiphenylmethane tetraglycidylamine, ethylenediamine and DMF, and continue the heat preservation reaction at 70°C for 4h;

[0043] (3) When the epoxy equivalent of the above-mentioned reactants is greater than 1000g / mol, add 4-imidazole ethylamine ...

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Abstract

The invention belongs to the technical field of metal material processing, particularly relates to a corrosion inhibitor suitable for dynamic strong alkaline cleaning of metal workpieces, and furtherdiscloses a preparation method of the corrosion inhibitor. The corrosion inhibitor suitable for dynamic strong alkaline cleaning of the metal workpieces is synthesized from raw materials of glycerin triglycidyl ether, 4,4-diaminodiphenylmethane tetraglycidyl amine, ethylenediamine, cystine, DMF, 4-imidazolylethylamine, aminethronii hydrobromidum, N,N-diphenylhydrazine and benzotriazole as raw materials. Through the synergistic effect between properties of all components, a corrosion inhibitor product is high in alkali resistance, can be further stirred in an alkaline environment for a long time without decomposition, can be directly used for the dynamic strong alkaline cleaning operation step of the metal workpieces such as brass, and has the more stable corrosion inhibition property and the higher corrosion inhibition effect.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, specifically relates to a corrosion inhibitor suitable for dynamic strong alkali cleaning of metal workpieces, and further discloses a preparation method thereof. Background technique [0002] Some metal materials represented by copper are widely used in industrial production due to their excellent strength, machinability, thermal conductivity, electrical conductivity, weldability and corrosion resistance, such as the core components of air-conditioning external units, especially With the development of the electric power industry, materials such as copper alloys are used more and more in the cooling system of double-water inner-cooled generators and the circulating cooling water system. Under normal circumstances, metals are difficult to be corroded, but in the process of processing metal workpieces, the workpieces need to be cleaned, and the usual way is to clean them with lye...

Claims

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Application Information

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IPC IPC(8): C23G1/18C23G1/20
CPCC23G1/18C23G1/20
Inventor 李海云王永垒邢楠楠张雅文孙继影黄铭张程程
Owner HUANGSHAN UNIV
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