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Environment-friendly degreasant for automobile coating and application method of environment-friendly degreasant

A degreasing agent and coating technology, applied in the field of coating, can solve the problems of increasing the cost of pollutant discharge and treatment, difficulties in the treatment of process wastewater, etc.

Inactive Publication Date: 2016-01-06
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This application provides an environmentally friendly degreasing agent for automobile painting and its use method, which solves the difficulties in the subsequent treatment of process wastewater caused by the presence of phosphorus-containing substances in the alkaline degreasing agent in the prior art, and increases pollution. Technical issues of waste emissions and subsequent treatment costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0039] In the existing container, add water with a weight ratio of 77% and 1% auxiliary cleaning agent sodium carbonate, after stirring evenly, add an alkaline substance compounded by 5% sodium hydroxide and 10% potassium hydroxide, and wait After the basic salt is fully dissolved, add a chelating agent consisting of 2% sodium citrate and 3% sodium diethylenetriaminepentaacetate, and finally add a surfactant consisting of 1% ester anionic surfactant and 1% fatty alcohol polyoxygen Composed of vinyl ether, stir evenly to get the environmental protection degreasing agent for automobile painting.

example 2

[0041] In the existing container, add water with a weight ratio of 34% and an auxiliary cleaning agent sodium carbonate of 3%, after stirring evenly, add an alkaline substance compounded by 20% sodium hydroxide and 25% potassium hydroxide, wait until After the basic salt is fully dissolved, add a chelating agent composed of 5% sodium citrate and 6% sodium diethylenetriaminepentaacetate, and finally add a surfactant consisting of 3% ester anionic surfactant and 4% fatty alcohol polyoxygen Composed of vinyl ether, stir evenly to get the environmental protection degreasing agent for automobile painting.

example 3

[0043] In the existing container, add water with a weight ratio of 60% and an auxiliary cleaning agent sodium carbonate of 2%, after stirring evenly, add an alkaline substance compounded by 10% sodium hydroxide and 15% potassium hydroxide, and wait After the basic salt is fully dissolved, add a chelating agent consisting of 3% sodium citrate and 5% sodium diethylenetriaminepentaacetate, and finally add a surfactant consisting of 2% ester anionic surfactant and 3% fatty alcohol polyoxygen Composed of vinyl ether, stir evenly to get the environmental protection degreasing agent for automobile painting.

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PUM

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Abstract

The invention discloses environment-friendly degreasant for automobile coating and an application method of the environment-friendly degreasant. The environment-friendly degreasant comprises alkaline matter, an auxiliary cleaning agent, a chelating agent, surfactant and 34%-77% of deionized water. The alkaline matter comprises, by weight, 5%-20% of sodium hydroxide and 10%-25% of potassium hydroxide. The auxiliary cleaning agent comprises, by weight, 1%-3% of sodium carbonate. The chelating agent comprises, by weight, 2%-5% of sodium citrate and 3%-6% of sodium diethylenetriamine pentaacetic acid. The surfactant comprises, by weight, 1%-3% of ester anionic surfactant and 1%-4% of fatty alcohol-polyoxyethylene ether. The environment-friendly degreasant for automobile coating is non-phosphorus alkaline environment-friendly degreasant without phosphorus or nitrogen, has the same degreasing performance with original phosphorus containing alkaline degreasant, and solves the technical problems that in the prior art, due to the fact that phosphorus containing matter exists in the alkaline degreasant, certain difficulty is caused to following process wastewater treatment, and emission and following treatment cost of pollutants are increased.

Description

technical field [0001] The invention relates to the technical field of painting, in particular to an environment-friendly degreasing agent for automobile painting and a using method thereof. Background technique [0002] The degreasing process is mainly to use the saponification, emulsification and dissolution reaction of the lye to the oil to remove the oil on the surface of the workpiece. It is one of the more important processes in the entire painting process. The quality of the treatment is the key to ensure the quality of the paint film. In general alkaline degreasing agents, phosphorus-containing substances are commonly used in builders and additives, which cause certain difficulties in the subsequent treatment of process wastewater and increase the discharge of pollutants and subsequent treatment costs. Contents of the invention [0003] This application provides an environmentally friendly degreasing agent for automobile painting and its use method, which solves th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/19
Inventor 马颖庞涛程鹏郎丰军黄先球石争鸣陈叶清何锐
Owner 武汉钢铁有限公司
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