Electromagnetic shielding conductive coating and preparation method thereof

Abstract

The invention provides an electromagnetic shielding conductive coating and a preparation method thereof. The electromagnetic shielding conductive coating comprises film-forming substances, conductive powder, thickening agents, coupling agents and curing agents. The mass ratio of the film-forming substances to the conductive powder to the thickening agents to the coupling agents to the curing agents is 5-20:50-75:5-30:0.7-4:6.5-15. Auxiliaries are added into the film-forming substances and stirred to be completely dissolved, the thickening agents are added into mixture, the coupling agents are then added into the mixture, the conductive powder is added into the mixture after stirring, and the curing agents are added into the mixture, so that the electromagnetic shielding conductive coating is obtained. By means of composition and proportioning for the conductive coating, the prepared coating is excellent in electric conductivity and resistant to acid, alkaline and oxidization. Besides, the resistivity of the conductive coating prepared by the preparation method is continuously reduced, and conductive high molecular polymer for the conductive powder in the conductive coating is well compatible with organic resin, so that air bubbles and needle holes in the coating can be decreased.

Description

technical field [0001] The invention relates to an electromagnetic shielding conductive paint and a preparation method thereof, belonging to the technical field of chemical industry. Background technique [0002] Conductive paint is a conductivity of 10 -10 Above S / cm, the coating has the ability to conduct electric current and eliminate the accumulated static charge. The coating generally contains matrix resin, solvent and conductive substance, which can form a conductive coating on the substrate. On the one hand, it can prevent the interference of electromagnetic wave radiation in the environment on the signal of electronic products, so that the signal of electronic products is fidelity and stable; As a fluid material, the coating has the advantages of simple preparation method, low cost, and can be conveniently sprayed or brushed on the surface of plastic products of various shapes to form a conductive electromagnetic shielding coating, thereby achieving the purpose of ...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problems such as the conductive base material used in the electromagnetic shielding conductive coating in the prior art is more precious metal, the production cost is higher, and the compatibility of the inorganic phase and the organic phase is poor, one of the purposes of the present invention is to provide a High conductivity, acid and alkali resistance, oxidation resistance, low cost, easy access to raw materials, conductive coatings that can prevent metal powder from settling, good stability and convenient use; the second purpose of the present invention is to provide a process for achieving one of the purposes The preparation method of the conductive coating which is simple and convenient to operate is realized by the following technical scheme