Nanofiber heavy-duty anti-corrosive coating, preparation method and spraying method of nanofiber heavy-duty anti-corrosive coating

Abstract

The invention discloses nanofiber heavy-duty anti-corrosive coating, a preparation method and a spraying method of the nanofiber heavy-duty anti-corrosive coating. The anti-corrosive coating comprises components C, A and B by mass ratio. The preparation method comprises the steps of preparing mixed solvent C, dissolving resin and preparing resin solution, pouring the dissolved resin solution into a ball mill for stirring and refluxing, then pouring the component A into the ball mill, uniformly stirring with a glass rod initially, performing ball milling and filtering, pouring the component B into the ball mill, uniformly stirring, adding the component B into the component A, and then uniformly stirring to obtain the nanofiber heavy-duty anti-corrosive coating. The spraying method comprises the steps of cleaning up the surface of an object to be sprayed, uniformly spraying the coating onto the surface of the object to be sprayed with a spray gun, and drying or naturally drying the sprayed surface. The nanofiber heavy-duty anti-corrosive coating has super-normal acid resistant, alkali resistant, salt resistant, water vapor corrosion resistant and harmful substances corrosion resistant capabilities, is non toxic, harmless, tasteless and environmentally friendly, and is applicable to the fields of ocean vessels, submarines, ocean engineering, drilling platforms, wharfs, water conservancy facilities, petrochemical equipment, bridge buildings, concrete facilities and the like.

Description

technical field [0001] The invention relates to a coating and a preparation and spraying method thereof, in particular to a nanofiber heavy-duty anti-corrosion coating and a preparation and spraying method thereof. Background technique [0002] The concept of heavy-duty anti-corrosion coatings originated in Japan in the 1960s. It refers to coatings with long-term service life that are applied in severe corrosive environments. The so-called harsh corrosive environment refers to a highly corrosive environment. According to the definition of ISO12944-2, it means that the atmospheric environment is C4 (high), C5-I (high industrial), C5-M (high marine) and immersed in Corrosive environment of Im2 in seawater or saline water. There is no exact definition of the so-called long-term service life. It is generally believed that the service life is greater than 5 years, that is, the medium or high service life of the coating film stipulated in ISO12944-5. At present, the existing hig...

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Problems solved by technology

[0009] The salt spray resistance time of the above two patents is 65-68 hours, which is very short. Under normal circumstances, the anti-corrosion time is 2-3 years, which does not meet the requirements of 10-15 years for heavy-duty anti-corrosion. In acidic and alkaline environments, it is corrosion-resistant The performance is worse. The anti-corrosion performance mainly depends on increasing the thickness of the coating to block harmful ions. It is still a traditional anti-corrosion paint, which pollutes the environment seriously and has poor anti-corrosion performance. It cannot meet the requirements of emerging industries for heavy-duty anti-corrosion.

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