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Environment-friendly water-based metal cleaner

A metal-based and cleaning agent technology, applied in the field of environmentally friendly water-based metal cleaning agents, can solve problems such as high cost, unsatisfactory rust resistance, and indirect carcinogenicity

Active Publication Date: 2012-10-24
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water-based cleaning agents containing nitrites have excellent rust resistance, but nitrites are highly toxic and have indirect carcinogenic effects when used together with triethanolamine
However, water-based cleaning agents that do not contain nitrite often have unsatisfactory anti-rust performance and high cost, and users are unwilling to accept them.

Method used

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  • Environment-friendly water-based metal cleaner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) First, mix and heat the twelve-carbon dibasic fatty acid and triethanolamine in a reaction vessel at a mass ratio of 1:3. The heating temperature is controlled at 87°C, and the temperature is maintained at this temperature for 2 hours to synthesize water-soluble amines. Soap is used as the antirust agent monomer, and the mass ratio of dodecyl carbon dibasic fatty acid and triethanolamine in the total preparation content is 5%;

[0016] (2) Add water into the container, the mass ratio of water to the total content of the preparation is 43%, heat to 50°C and keep at this temperature, slowly add sodium carbonate and benzotriazole under stirring, fully dissolve and evenly; The mass ratio of sodium in the total content is 1%, and the mass ratio of benzotriazole in the total content is 0.5%;

[0017] (3) Slowly add triethanolamine and antirust agent monomers to the above solution, stir and dissolve evenly at the same time, the mass ratio of triethanolamine in the total co...

Embodiment 2

[0021] (1) First, mix and heat the twelve-carbon dibasic fatty acid and triethanolamine in a reaction vessel at a mass ratio of 1:3. The heating temperature is controlled at 83°C, and the temperature is maintained at this temperature for 2 hours to synthesize water-soluble amines. Soap is used as a rust inhibitor monomer, and the mass ratio of dodecyl carbon dibasic fatty acid and triethanolamine in the total preparation content is 10%;

[0022] (2) Add water into the container, the mass ratio of water to the total content of the preparation is 43%, heat to 50°C and keep at this temperature, slowly add sodium carbonate and benzotriazole under stirring, fully dissolve and evenly; The mass ratio of sodium in the total content is 3%, and the mass ratio of benzotriazole in the total content is 2%;

[0023] (3) Slowly add triethanolamine and rust inhibitor monomer into the above solution, stir and dissolve evenly at the same time, the mass ratio of triethanolamine in the total cont...

Embodiment 3

[0027] (1) First, mix and heat the twelve-carbon dibasic fatty acid and triethanolamine in a reaction vessel at a mass ratio of 1:3. The heating temperature is controlled at 85°C, and the temperature is maintained at this temperature for 2 hours to synthesize water-soluble amines. Soap is used as a rust inhibitor monomer, and the mass ratio of dodecyl carbon dibasic fatty acid and triethanolamine in the total preparation content is 7.5%;

[0028] (2) Add water into the container, the mass ratio of water to the total content of the preparation is 58.5%, heat to 50°C and keep at this temperature, slowly add sodium carbonate and benzotriazole under stirring, fully dissolve and evenly; The mass ratio of sodium in the total content is 2%, and the mass ratio of benzotriazole in the total content is 1%;

[0029] (3) Slowly add triethanolamine and antirust agent monomers to the above solution, stir and dissolve evenly at the same time, the mass ratio of triethanolamine in the total co...

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PUM

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Abstract

The invention relates to an environment-friendly water-based metal cleaner. The environment-friendly water-based metal cleaner is characterized in that: a process for preparing the environment-friendly water-based metal cleaner comprises the following steps of: mixing, stirring and heating dodecanedioic fatty acid and triethanolamine in a reaction vessel in a mass ratio of 1:3 to synthesize water-soluble amine soap serving as an antirusting agent monomer; adding water into the vessel, heating to 50 DEG C, and maintaining the temperature; slowly adding sodium carbonate and hydroxy benzotriazole under stirring, sufficiently and uniformly dissolving; slowly adding the triethanolamine and the antirusting agent while stirring and dissolving uniformly; slowly adding alkylphenol ethoxylates OP-10, alkylolamide6501 and alkylolamide phosphate ester 6503, and stirring and dissolving uniformly; slowly adding organic modified phosphate EAK8190 and polyethyleneglycol, and stirring and dissolving uniformly; and slowly adding polyether defoamer SPG-10 and mouldproof bactericide NEUF652, and stirring and dissolving uniformly to obtain the final water-based metal cleaner. The environment-friendly water-based metal cleaner is applicable to cleaning in the iron casting and steel mechanical processing procedure, cleaning before antirust sealing and cleaning in aluminum, copper and other nonferrous metal mechanical processing procedure, has interprocess and short-term rust prevention and corrosion resistance, can be matched with electroplating, spray painting, baking finishing, mopping and other processes, can be used for cleaning at normal temperature, and has better cleaning effect when heated.

Description

technical field [0001] The invention relates to an environment-friendly water-based metal cleaning agent, which is used for cleaning and rust prevention of metal parts in the mechanical processing and manufacturing industry. Background technique [0002] In the process of manufacturing, using and maintaining automobile products and parts, it is often necessary to clean various dirt attached to the surface of products and parts (such as metal shavings, cutting fluid, abrasives and various greases and dust during processing) acid, alkali, salt and other electrolytes and hand sweat, friction and wear products and corrosion products, etc.), and achieve a certain surface cleanliness to ensure the smooth progress of the processing process, eliminate the hidden dangers of metal embroidery and friction and wear, and prevent embroidery The continuous development of corrosion and wear ensures the internal and surface quality of the product and prolongs the service life. [0003] Ther...

Claims

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Application Information

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IPC IPC(8): C23G1/18
Inventor 汪玉瑄王清国李艳慧
Owner CHINA FIRST AUTOMOBILE
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