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Metal corrosion inhibitor

A technology of metal corrosion inhibitor and parts by weight, which is applied in the field of metal corrosion inhibition, can solve problems such as toxicity, and achieve the effects of strong corrosion resistance, good water solubility, and remarkable corrosion inhibition effect

Inactive Publication Date: 2016-06-01
QINGDAO HONGYU ENVIRONMENTAL PROTECTION AIR CONDITIONING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the copper corrosion inhibitors currently used are more or less toxic, such as commonly used BTA, imidazole, thiazole, carbazole, aniline, thiourea, etc., due to the toxicity of these corrosion inhibitors, it brings many problems to the application process. inconvenient

Method used

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Examples

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Effect test

Embodiment 1

[0008] A metal corrosion inhibitor, which is composed of the following raw materials in parts by weight: 22 parts of aminotrimethylene phosphonic acid, 8 parts of hydroxyethylidene diphosphonic acid, 8 parts of sodium silicate, 2 parts of phosphoric acid, 3 parts of polyacrylamide, polyacrylamide 1 part of aspartic acid, 3 parts of sodium gluconate, 3 parts of zinc sulfate, 3 parts of sodium bicarbonate, 6 parts of sodium chloride, 4 parts of ethylene glycol, 0.3 parts of surfactant, 30 parts of deionized water.

Embodiment 2

[0010] A metal corrosion inhibitor, which is composed of the following raw materials in parts by weight: 23 parts of aminotrimethylene phosphonic acid, 9 parts of hydroxyethylidene diphosphonic acid, 10 parts of sodium silicate, 3 parts of phosphoric acid, 4 parts of polyacrylamide, polyacrylamide 2 parts of aspartic acid, 4 parts of sodium gluconate, 5 parts of zinc sulfate, 5 parts of sodium bicarbonate, 7 parts of sodium chloride, 5 parts of ethylene glycol, 0.4 parts of surfactant, 35 parts of deionized water.

Embodiment 3

[0012] A metal corrosion inhibitor, which is composed of the following raw materials in parts by weight: 24 parts of aminotrimethylene phosphonic acid, 10 parts of hydroxyethylidene diphosphonic acid, 12 parts of sodium silicate, 4 parts of phosphoric acid, 5 parts of polyacrylamide, polyacrylamide 3 parts of aspartic acid, 6 parts of sodium gluconate, 6 parts of zinc sulfate, 6 parts of sodium bicarbonate, 9 parts of sodium chloride, 6 parts of ethylene glycol, 0.5 parts of surfactant, 40 parts of deionized water.

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PUM

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Abstract

The invention discloses a metal corrosion inhibitor. The metal corrosion inhibitor is prepared from, by weight, 22-24 parts of amino tri(methylene phosphonic acid), 8-10 parts of 1-hydroxy ethylidene-1,1-diphosphonic acid, 8-12 parts of sodium silicate, 2-4 parts of phosphoric acid, 3-5 parts of polyacrylamide, 1-3 parts of polyaspartic acid, 3-6 parts of sodium gluconate, 3-6 parts of zinc sulfate, 3-6 parts of sodium bicarbonate, 6-9 parts of sodium chloride, 4-6 parts of ethylene glycol, 0.3-0.5 part of a surface active agent and 30-40 parts of deionized water. The metal corrosion inhibitor is good in water solubility and remarkable in corrosion inhibition effect, and has high corrosion resisting capacity.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion inhibition, and in particular relates to a metal corrosion inhibitor. Background technique [0002] Corrosion inhibitor is a chemical substance or compound that can prevent or slow down the corrosion of materials when it exists in the environment (medium) in an appropriate concentration and form. It can also be called a corrosion inhibitor. Cooling water is indispensable for industrial enterprises Public works, during use, will corrode the metal surface, and corrosion inhibitors need to be added to prevent metal corrosion. Most of the copper corrosion inhibitors currently used are more or less toxic, such as commonly used BTA, imidazole, thiazole, carbazole, aniline, thiourea, etc., due to the toxicity of these corrosion inhibitors, it brings many problems to the application process. inconvenient. Contents of the invention [0003] The object of the present invention is to provide a me...

Claims

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Application Information

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IPC IPC(8): C23F11/08
CPCC23F11/08
Inventor 李盛明
Owner QINGDAO HONGYU ENVIRONMENTAL PROTECTION AIR CONDITIONING EQUIP
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