Method for preparing water-based paint of steel structure

A technology for water-based coatings and steel structures, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of affecting the anti-corrosion performance of coatings, the decrease of adhesion, and the decrease of barrier properties, so as to reduce VOC emissions and increase Adhesion, the effect of enhancing adhesion

Active Publication Date: 2019-02-22
沈阳先进涂层材料产业技术研究院有限公司
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Problems solved by technology

However, in practical applications, water-based epoxy resins still have certain deficiencies, such as the decrease in strength caused by water-based, the decrease in barrier properties, and the decrease in adhesion, etc., which will affect the anti-corrosion performance of the coating. Therefore, it is urgent to develop a new water-based composite epoxy resin. coating

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  • Method for preparing water-based paint of steel structure

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with specific examples.

[0023] (1) Purification of fulvic acid: put a certain amount of fulvic acid in a three-neck flask, add an appropriate amount of absolute ethanol, start the agitator, heat up to the liquid boiling, remove the liquid and filter, centrifuge the obtained filtrate, freeze-dry to obtain purified Fulvic acid (FA).

[0024] (2) Fulvic acid-modified graphene: put 100ml of reduced graphene suspension (1.0g) in a three-necked bottle, start the stirrer, and disperse for 0.5h. Slowly add the fulvic acid solution under low temperature stirring. After the fulvic acid solution is added dropwise, slowly raise the temperature to 30°C, continue to stir for an hour, and collect the sample by centrifugation; finally, put the collected sample in deionized water, continue to stir for 2 hours, and take out the reaction solution , washed three times with deionized water, centrifuged, and fr...

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Abstract

The invention discloses a method for preparing water-based paint of a steel structure and relates to a paint preparation method. The method disclosed by the invention comprises the following steps: integrating natural fulvic acid (FA) and graphene oxide (GO), and filling the integrated fulvic acid and graphene into a water-based epoxy resin, thereby obtaining the water-based epoxy composite anticorrosive paint. According to the method, the problem that the graphene is easy to aggregate in a water-based matrix is successfully solved, and the blocking ability of the graphene on corrosive particles is enhanced; and meanwhile, the fulvic acid has the ability of strongly adsorbing metal ions and combining with the metal ions to form stable compounds, the corrosion reaction can be further blocked by complexing the fulvic acid and ions on the surface of the metal matrix in the application process, corrosion is effectively relieved, and the adhesion force of the coating is improved. Accordingto the method, the defects ubiquitous in the conventional water-based anticorrosive coating that poor barrier property and short anticorrosion cycle are caused by non-uniform distribution of the anticorrosive filler in the matrix can be overcome, and the corrosion resistance of the water-based coating is greatly improved.

Description

technical field [0001] The invention relates to a method for preparing paint, in particular to a method for preparing water-based paint for steel structures. Background technique [0002] With the rapid development of my country's economic construction, steel structure materials have become one of the main materials for construction and construction, and the waste caused by corrosion of steel and other metals is huge every year. According to reports, the annual loss caused by metal corrosion in the United Kingdom is several hundred million pounds; the annual loss caused by metal corrosion in the United States accounts for about 4.2% of the gross national product; 2.3%. So far, among many anti-corrosion methods (such as: using corrosion-resistant metal materials, electrochemical protection methods, adding corrosion inhibitors, painting anti-corrosion coatings, etc.), coating anti-corrosion coatings is the most economical and effective. In recent years, the concept of enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08
CPCC09D5/084C09D163/00C08K9/04C08K3/042
Inventor 王娜高慧颖张静李龙吴于爽丁长坤魏笛
Owner 沈阳先进涂层材料产业技术研究院有限公司
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