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A kind of preparation method of steel structure water-based paint

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

Active Publication Date: 2021-02-12
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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  • A kind of preparation method of steel structure water-based paint

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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

A method for preparing water-based paint for steel structures, relating to a method for preparing paint. The invention uses natural humic acid fulvic acid (FA) to modify graphene (GO) to integrate it, and then integrates the integrated fulvic acid and graphite The water-based epoxy composite anti-corrosion coating is prepared by filling olefin into the water-based epoxy resin. This method successfully solves the problem that graphene is easy to agglomerate in the water-based matrix, and enhances the barrier ability of graphene to corrosion particles; at the same time, fulvic acid has a strong ability to adsorb metal ions and complex with them to form stable compounds. During use, it complexes with ions on the surface of the metal substrate, which can prevent the further occurrence of corrosion reaction, effectively slow down the corrosion and improve the adhesion of the coating. The method overcomes the disadvantages of poor barrier property and short anticorrosion period caused by uneven distribution of anticorrosion fillers in the current waterborne anticorrosion coating, and greatly improves the anticorrosion performance of the waterborne coating.

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 Patents(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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