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Environment-friendly chlorine-free stainless steel rust removal cleaning agent and preparation method thereof

A rust-removing cleaning agent, a technology for stainless steel, applied in the field of stainless steel surface treatment, can solve the problems of unclean stainless steel rinsing, rusting of surrounding metals, and rusting of pickling workpieces, achieving excellent oil stripping and penetration effects and reducing fluid replacement costs. , the effect of improving production efficiency

Pending Publication Date: 2022-07-22
苏州盈得化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not only harmful to the human body, but also harmful to the environment. It can cause pollution to water and soil, and it can also react with many metals. The volatile acid mist accelerates the rusting of the surrounding metals. The stainless steel is not rinsed clean, causing the pickling workpiece to rust.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An environmentally friendly chlorine-free stainless steel rust-removing cleaning agent and a preparation method thereof, the raw material components and the dosage thereof are as follows:

[0027] 8g methanesulfinic acid, 4g ammonium bifluoride, 15g glycolic acid, 12g citric acid, 12g sodium octadecylaminopropionate, 7g polyacrylic acid (number average molecular weight 6500), 42g water.

[0028] Specific steps are as follows:

[0029] (1) the water of calculation and weighing is added in the reaction kettle, start the stirrer, then successively the methylsulfinic acid, ammonium bifluoride, glycolic acid, citric acid of calculation and weighing are added in the reaction kettle, heated to 50 After ℃, stop heating and continue stirring at 350r / min for 1h;

[0030] (2) Sodium octadecyl aminopropionate and polyacrylic acid are added in sequence, and when all the raw materials are added, continue stirring at 250 r / min for 1 hour, and after sampling and analysis are qualified...

Embodiment 2

[0033] An environmentally friendly chlorine-free stainless steel rust-removing cleaning agent and a preparation method thereof, the raw material components and the dosage thereof are as follows:

[0034] 10g cyclohexanesulfinic acid, 5g sodium hydrogen fluoride, 20g glycolic acid, 8g citric acid, 8g sodium dodecylaminopropionate, 5g sodium polyacrylate (molecular weight 7000), 44g water.

[0035] Specific steps are as follows:

[0036] (1) the water that calculates and weighs is added in the reaction kettle, starts the stirrer, then successively adds the cyclohexanesulfinic acid, sodium hydrogen fluoride, glycolic acid, citric acid of calculation and weighing into the reaction kettle, and is heated to 40 After ℃, stop heating and continue stirring at 400r / min for 55min;

[0037] (2) Sodium dodecyl aminopropionate and sodium polyacrylate were added in sequence. When all the raw materials were added, the mixture was stirred at 300 r / min for 50 min. After passing the sampling an...

Embodiment 3

[0040] An environmentally friendly chlorine-free stainless steel rust-removing cleaning agent and a preparation method thereof, the raw material components and the dosage thereof are as follows:

[0041] 5g cyclohexanesulfinic acid, 3g potassium hydrogen fluoride, 10g glycolic acid, 15g citric acid, 15g sodium cetylaminopropionate, 10g sodium polyacrylate (molecular weight 6000), 42g water.

[0042] Specific steps are as follows:

[0043] (1) the water that calculates and weighs is added in the reaction kettle, starts the stirrer, then successively adds the cyclohexanesulfinic acid, potassium hydrogen fluoride, glycolic acid, citric acid of calculation and weighing into the reaction kettle, and is heated to 60 After ℃, stop heating and continue stirring at 300r / min for 65min;

[0044] (2) Sodium hexadecyl aminopropionate and sodium polyacrylate are added in sequence, and when all the raw materials are added, continue stirring at 200 r / min for 70 min. After sampling and analys...

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PUM

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Abstract

The invention relates to an environment-friendly chlorine-free stainless steel rust removal cleaning agent and a preparation method thereof, and belongs to the technical field of stainless steel surface treatment. The stainless steel rust removal cleaning agent comprises the following raw material components in percentage by mass: 5-10% of sulfinic acid, 3-5% of fluoride, 10-20% of glycolic acid, 8-15% of citric acid, 8-15% of sodium alkyl amino propionate, 5-10% of acrylic polymer and the balance of water. The stainless steel rust removal cleaning agent does not contain strong acid, heavy metal and nitrous acid substances, does not have pungent smell, and overcomes the defect that a traditional rust removal agent containing hydrochloric acid quickly returns rust after being washed with water. The cleaning agent is widely applied to cleaning processes such as dipping, ultrasonic wave and scrubbing, and can quickly remove rust, decompose various oil stains and form a clean and short-term rust-proof surface.

Description

technical field [0001] The invention relates to the technical field of stainless steel surface treatment, in particular to an environmentally friendly and chlorine-free stainless steel rust-removing cleaning agent and a preparation method thereof. Background technique [0002] Stainless steel has the ability to resist atmospheric oxidation—that is, rust resistance, and also has the ability to resist corrosion in media containing acids, alkalis and salts—that is, corrosion resistance. However, the size of its anti-corrosion ability varies with the chemical composition of its steel itself, the state of mutual addition, the conditions of use and the type of environmental media. Such as stainless steel pipes, in a dry and clean atmosphere, have absolutely excellent anti-corrosion ability, but if there are corrosive substances on the surface, and in a humid environment, or the air contains a lot of salt, or when the product is installed and used, It is easy to adhere to construc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/08
CPCC23G1/088
Inventor 田伟卢培民方健郑凌新李富民王大庆
Owner 苏州盈得化学科技有限公司
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