Electrostatic-screening graphene anticorrosion coating and preparation method thereof

Abstract

The invention relates to the field of coatings, in particular to an electrostatic-screening graphene anticorrosion coating and a preparation method thereof. The electrostatic-screening graphene anticorrosion coating comprises, by weight, 60-80 parts of organic polymer emulsion, 10-25 parts of an electrostatic screening agent, 5-20 parts of a conductive filler, 5-8 parts of a dispersant, 3-8 partsof a coupling agent, 1-5 parts of a defoaming agent, and 3-9 parts of a leveling agent, wherein the electrostatic screening agent comprises porous microspheres, graphene film and polyacetylene film sequentially from inside to outside and allows graphite to be evenly distributed on the surface of the porous microspheres, the porous microspheres are sealed with the polyacetylene film, and aggregation of the graphene film is prevented accordingly. By adding the electrostatic screening agent into the coating, the electrostatic screening action and stability of the coating can be significantly improved, aggregation of graphene in the coating can be prevented, graphene stability can be improved, and coating stability can be improved accordingly.

Description

Technical field [0001] The invention relates to the field of coatings, in particular to an electrostatic shielding graphene anticorrosive coating and a preparation method thereof. Background technique [0002] Electrostatic discharge is a common phenomenon in daily life. In a dry environment, sometimes the human body will feel electricity when touching metal objects and occasionally see electric sparks. This is the phenomenon of electrostatic discharge, which is also the phenomenon of ESD. . Due to the friction between objects, static electricity is easy to accumulate, causing static electricity hazards, interfering with the normal operation of electronic computers and precision instruments, and even causing explosions and fires in severe cases. Electrostatic discharge will produce a short discharge current and a strong discharge magnetic field. It can cause malfunction of electronic equipment in operation, and even damage to internal components, resulting in loss of function o...

AI Technical Summary

Problems solved by technology

The composite coating provided by the present invention has both hydrophobicity and antistatic properties, does not contain any fluorine-containing substances, is environmentally friendly, and has excellent durability. However, graphene will agglomerate itself, destroying the uniformity and compactness of its dispersion. Agglomeration occurs when it is applied to coatings, and stress concentration occurs inside the coating film, resulting in a decrease in mechanical properties and anti-corrosion properties

At present, the application of graphene in anti-corrosion coatings has the defect that it is difficult to disperse, and the layers of graphene are easy to overlap and gather again.

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