Novel copper conductive printing ink

Abstract

The invention provides a novel copper conductive printing ink. The novel copper conductive printing ink is prepared from following main raw materials: 45 to 55% of copper powder, 20 to 25% of an adhesive, 10 to 15% of a solvent, 4 to 6% of a coupling agent, and the balance an additive. IIngredient supplement of the novel copper conductive printing ink is reasonable; preparation cost is low; and the novel copper conductive printing ink is excellent in conductive performance and adhesive force, possesses excellent high temperature oxidation resistance, and is capable of satisfying moulding demands of a plurality of printed circuits.

Description

technical field [0001] The invention relates to a copper-based conductive ink, in particular to a novel copper-based conductive ink with outstanding high-temperature oxidation resistance performance, and belongs to the technical field of inks. Background technique [0002] Conductive ink refers to the ink printed on the conductive substrate to make it have the ability to conduct current and eliminate the accumulated static charge. Conductive inks are generally printed on non-conductive substrates such as plastic, glass, ceramics or cardboard. There are a wide range of printing methods for conductive inks, such as screen printing, letterpress printing, flexographic printing, gravure printing, and lithographic printing. Different printing methods can be selected according to the requirements of film thickness. The resistance, solder resistance and friction resistance of different film thicknesses are also different. There are two kinds of conductive inks: thick film color pa...

AI Technical Summary

Problems solved by technology

Gold-based conductive inks have stable chemical properties and good electrical conductivity, but are expensive; silver-based conductive inks are widely used in conductive printing of membrane switches, but the drying treatment of the ink film is difficult to control, resulting in increased resistance and expensive prices; The conductive ink is cheap and has excellent performance, but it has the disadvantage of being easily oxidized. The anti-oxidation treatment of copper powder in the current technology can prevent the printed circuit from being oxidized, but the disadvantage is that the printed circuit cannot be treated at high temperature, which affects the conductivity of the copper system. The practicality of ink