A conductive coated steel sheet and method for manufacturing same

Abstract

The present invention discloses a conductive coating steel plate which comprises a base plate, a passivation layer and a front coating, wherein the front coating comprises primer and finish paint; thefinish paint is a composite coating formed by one of polyester paint or polyvinyl fluoride paint and a nano graphene polyaniline compound, the mixing ratio of the primer to the finish paint is 1:(1-2.5), and the thickness of the coating is 8-35 microns; the primer is a composite coating formed by one of epoxy resin, polyurethane or epoxy modified polyurethane and a nano graphene polyaniline compound, wherein the mixing ratio of the epoxy resin, polyurethane or epoxy modified polyurethane to the nano graphene polyaniline compound is 1:(1-2), and the thickness of the coating is 5-10 microns. Compared with the prior art, the nano graphene is oxidized with sulfuric acid, so that the product can effectively improve the conductivity of polyaniline, and after the sulfuric acid oxidized nano graphene is mixed with other coating ingredients, the corrosion resistance of the coated steel plate is guaranteed while the conductivity is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of color coated steel plates, in particular to a conductive coated steel plate and a manufacturing method thereof. Background technique [0002] With the widespread application of color-coated steel sheets, some color-coated steel products with special functions have attracted more and more attention and demand from users, and conductive coated steel sheets are one of the important varieties. [0003] Conductive coated steel sheets are mainly used in electronic assembly factories, electric control cabinets, electronic product case covers, and interior decoration in flammable and explosive places. [0004] At present, most of the color plates produced in China are ordinary polyester color-coated plates with a single variety. They lack this special functional color plate, especially the color-coated plate with low surface resistance. [0005] 1) The color plate has antistatic function, but the surface resista...

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Problems solved by technology

For example: "an antistatic color-coated board" disclosed in the patent document of patent number CN201220141642. A layer of paint is applied, a layer of anti-corrosion layer is applied between the chemical conversion layer and the paint layer on the color-coated plate and the lower surface, and a layer of conductive composite coating is applied on the paint layer, but the surface resistance is relatively low. high

[0006] 2) Ordinary color-coated board has good corrosion resistance, but the surface electrons are extremely high and non-conductive

[0007] 3) It has a conductive function, but the conductive unit in the paint coating is heavy metal powder such as copper and silver, which has a high cost and is not conducive to environmental protection

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