Steel structure anticorrosive coating and preparation method thereof
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An anti-corrosion coating, steel structure technology, applied in anti-corrosion coatings, coatings, polyurea/polyurethane coatings, etc., can solve the problems of harsh conditions and complex processes, achieve low equipment requirements, simple painting process, long-term effect The effect of electrochemical protection
Inactive Publication Date: 2018-11-16
青岛正为能源科技有限公司
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Problems solved by technology
Traditional steel anti-corrosion is to add other elements to change the type of steel to achieve the purpose of anti-corrosion. The process is complex and the conditions are harsh. From the perspective of long-term economy and economy, effective anti-corrosion of steel must be carried out to ensure the service life of steel structure materials
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Embodiment 1
[0025] An anticorrosive coating for steel structures. Firstly, the surface of the steel structure substrate is cleaned and sandblasted to remove rust, followed by alcohol-soluble inorganic zinc-rich primer coating, polyurethane intermediate coating and fluorocarbon top coating; The alcohol-soluble inorganic zinc-rich primer is coated on the surface of the steel structure substrate, the polyurethane intermediate paint is coated on the primer, and the fluorocarbon topcoat is coated on the intermediate paint;
[0026] The mass percentages of the components of the alcohol-soluble inorganic zinc-rich primer are as follows: ethyl orthosilicate 20%, scaly zinc powder 42%, ethylene glycol 10%, butanol 12%, dilute hydrochloric acid 5%, glacial acetic acid 7%, water glass 1%, hydroxycellulose 3%;
[0027] The mass percentages of the components of the polyurethane intermediate paint are as follows: water-based polyurethane resin 43%, polycarboxylate metal salt 2.5%, sodium nitrite 1%, ethyl a...
Embodiment 2
[0036] An anticorrosive coating for steel structures. Firstly, the surface of the steel structure substrate is cleaned and sandblasted to remove rust, followed by alcohol-soluble inorganic zinc-rich primer coating, polyurethane intermediate coating and fluorocarbon top coating; The alcohol-soluble inorganic zinc-rich primer is coated on the surface of the steel structure substrate, the polyurethane intermediate paint is coated on the primer, and the fluorocarbon topcoat is coated on the intermediate paint;
[0037] The mass percentages of the components of the alcohol-soluble inorganic zinc-rich primer are as follows: 19% ethyl orthosilicate, 43% scaly zinc powder, 9% ethylene glycol, 13% butanol, 4.5% dilute hydrochloric acid, glacial acetic acid 8%, sodium pyrophosphate 1.5%, hydroxypropyl cellulose 2%,
[0038] The mass percentages of the components of the polyurethane intermediate paint are as follows: water-based polyurethane resin 44%, polycarboxylate metal salt 3.5%, sodium ...
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Abstract
The invention discloses a steel structure surface anticorrosive coating and a preparation method thereof. The surface anticorrosive coating mainly comprises three parts that, the first part is an alcohol-soluble inorganic zinc-rich primer layer, the second part is a polyurethane intermediate paint layer, and the third part is a fluorocarbon finish paint layer; the anticorrosive coating preparationcomprises following steps that the surface of the steel structure is cleaned and subjected to sand blasting and derusting treatment firstly, then the primer coating, the intermediate paint coating and finish paint coating are conducted; the alcohol-soluble inorganic zinc-rich primer layer is coated on the surface of the steel structure base material, the polyurethane intermediate paint is coatedon the primer, and the fluorocarbon finish paint is coated on the intermediate paint. According to the preparation method, the anticorrosive coating prepared has the advantages of excellent corrosionresistance, high temperature resistance, chemical resistance and good decoration, the service life of the steel structure is prolonged, and the later anticorrosive maintenance cost is reduced.
Description
Technical field [0001] The invention relates to the field of anti-corrosion on the surface of steel, in particular to an anti-corrosion coating of steel and a preparation method thereof. Background technique [0002] As we all know, steel is the material guarantee for the survival and development of a country. The steel industry is the basic industry of our national economy. However, many steel structure materials are exposed to the complex external environment for a long time, and are extremely susceptible to corrosion and damage, resulting in waste of resources. Therefore, the anti-corrosion protection of steel structures is of great significance. At the same time, anti-corrosion coatings for steel structures have received more and more attention from all aspects. Traditional steel anti-corrosion is achieved by adding other elements to change the type of steel to achieve anti-corrosion purposes. The process is complex and the conditions are harsh. From the perspective of lon...
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