Preparation method of ceramic-based conductive coating

Abstract

The invention provides a preparation method of a ceramic-based conductive coating. The preparation method comprises the following steps: S1, preparing a lanthanum nitrate water solution; S2, preparinga tetrabutyl titanate solution; S3, preparing a barium carbonate solution; S4, preparing lanthanum modified barium titanate; S5, adding lanthanum modified barium titanate into a silane coupling agentto obtain surface-modified barium titanate; adding the surface-modified barium titanate into an HCl solution, adding sodium dodecyl benzene sulfonate, stirring until the solution becomes transparent,then adding the solution into an n-hexane solution of aniline, uniformly mixing and stirring in an ice bath, dropwise adding an ammonium persulfate solution after uniformly stirring, and obtaining polyaniline-coated barium titanate after dropwise adding is finished; and S6, heating E-44 epoxy resin in a water bath, adding xylene and butanol, uniformly stirring, adding 4-methylimidazole, triethylene tetramine and polyaniline coated barium titanate, and uniformly mixing to obtain an uncured conductive coating. The prepared conductive coating not only has excellent conductivity, but also has corrosion resistance and high reliability.

Description

Technical field: [0001] The invention relates to the field of conductive coatings, in particular to a preparation method of ceramic-based conductive coatings. Background technique: [0002] Conductive paint is a functional paint that has the ability to conduct electric current and dispel the accumulated static charge. Conductive coatings have important applications in many fields. In the field of antistatic, it can prevent electronic components from being broken down due to electrostatic discharge; it can be coated on the walls of petroleum storage tanks and pipelines to release accumulated static charges and prevent explosion accidents; for Electromagnetic interference in daily life, conductive coatings can absorb electromagnetic waves; conductive coatings generate heat when energized, and can be used on the surface of some substrates that require heat as a heating paint. Conductive coatings have such a wide range of application and development prospects, so the research o...

AI Technical Summary

Problems solved by technology

Conductive coatings as fillers are rarely used; most of the current market uses silver-based conductive coatings, but when the working environment is relatively humid, the conductive filler silver will undergo electromigration, which will lead to an increase in the resistivity of the coating and a decrease in conductivity; Cu and Ni are cheap and will not migrate under an electric field, but Cu and Ni are chemically active and easily oxidized, making it difficult to maintain good electrical conductivity during long-term use