Preparation method of carbon nano-tube graphene inorganic zinc-enriched anti-corrosion coating

Abstract

The invention provides a preparation method of carbon nano-tube graphene inorganic zinc-enriched anti-corrosion coating. The preparation method of the carbon nano-tube graphene inorganic zinc-enrichedanti-corrosion coating comprises the following steps: (1) preparing a component A: adding a solvent, slowly adding anti-settling agent under the stirring condition, dispersing at high speed, adding polyvinyl butyral and the carbon nano-tube, dispersing uniformly, grinding with grinding sand, filtering to remove the grinding sand, adding zinc powder and graphene, adjusting by the solvent, and packaging; (2) preparing a component B: dropwise adding water into resin and the solvent under the stirring state, stirring for 10 to 30 minutes, dropwise adding hydrochloric acid, stirring for 10 to 30 minutes, heating to 40 to 50 DEG C, stirring and heating for a period of time, adding the solvent, adjusting and packaging. The preparation method of the carbon nano-tube graphene inorganic zinc-enriched anti-corrosion coating and the preparation method of a novel formula are cooperatively used, so the corrosion effect is improved, the use amount of the zinc powder is reduced, fog generated by zincoxide is reduced and environmental friendliness is achieved.

Description

technical field [0001] The invention belongs to the field of paint manufacturing, in particular to a carbon nanotube graphene inorganic zinc-rich anticorrosion paint. Background technique [0002] The zinc-rich primer with polyethylsilicate hydrolyzate as a film-forming substance is a very important one in antirust and anticorrosion coatings, because it achieves the protection of zinc powder on steel through -Si-O-Si-semiconductor. Electrochemical protection, also known as electrochemical antirust paint, is an inorganic zinc-rich primer. The shielding effect of zinc-rich coatings mainly depends on the formation of refractory salts and corrosion products. Zinc-rich coatings contain a large amount of zinc powder. The zinc particles are in close contact with the steel surface. The zinc potential is more negative than that of iron. Therefore, in the electrolyte solution, zinc atoms tend to lose electrons and become anodes, while iron is a cathode. In the anode area, zinc is co...

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Problems solved by technology

[0003] However, in the process of general coating film formation, with the evaporation of water, the pH value of the coating changes, and the electrode potential of the steel substrate is not always in the state of electrochemical protection, so the passivation effect of the coating on the steel substrate is also different.

[0004] In addition, although epoxy zinc-rich primer coatings have shielding, electrochemical protection, coating self-repairing and passivation functions, the anti-corrosion performance is at the expense of zinc powder, and a large amount of zinc oxide mist will be generated during welding. Hazard to the life and health of workers

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