Conductive printing ink containing flake graphene and compound metal filling

Abstract

The invention belongs to the field of conductive printing ink, and in particular relates to conductive printing ink containing flake graphene and compound metal filling. The conductive printing ink is specifically prepared from the following components in parts by mass: 1 to 10 parts of a flake graphene conductive material, 10 to 30 parts of a nano metal conductive material, 20 to 50 parts of an adhesive, 1 to 5 parts of an auxiliary agent and 30 to 50 parts of a solvent. According to the conductive printing ink provided by the invention, graphene and nano composite metal particles are used as the conductive materials; a flake-shaped structure of the graphene and the nano-grade metal particles are tightly stacked for filling, so that the contact area of the conductive materials is enlarged, and the conductivity and current-carrying capability of a printed circuit are improved; the defect that the conductive performance is unstable after pure metal conductive printing ink is oxidized is overcome.

Description

Technical field [0001] The invention belongs to the field of conductive inks, and particularly relates to a conductive ink containing flake graphene and composite metal fillers. Background technique [0002] Conductive ink is a paste ink made of conductive materials (gold, silver, copper and carbon) dispersed in a binder. It has a certain degree of conductivity and can be used for printing conductive dots or conductive lines. Conductive ink is the most basic and most critical raw material for the production of organic printed circuit board film. Its application in the fields of membrane switch panels, keyboards, flexible conductive cables, electronic shielding, and radio frequency identification is becoming more and more extensive, which determines organic printed electronics. One of the key raw materials for product success or failure. The metal powders currently used are easily oxidized and reduce conductivity. Although the conductive ink of carbon powder is low in cost, its...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the above-mentioned problems, and provides a conductive ink containing flake graphene and composite metal fillers that overcomes the defect that the electrical conductivity of the metal filler is reduced after oxidation, and provides stable conductivity and current-carrying capacity of the printed circuit.

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