Metal conductive ink and preparation method thereof

Abstract

The invention discloses metal conductive ink and a preparation method thereof, and belongs to the technical field of ink preparation. The metal conductive ink comprises, by mass, 20-50% of metal nanoconductive particles, 20-30% of a binder, 20-40% of a solvent and 10-15% of a pigment; wherein the conductive filler comprises silver-coated nano particles, and the silver-coated nano particles comprise silver-coated copper nano particles and silver-coated silicon dioxide nano powder. The preparation method comprises the following steps: preparing a first dispersion mixture; preparing a second dispersion mixture; preparing a third dispersed mixture; and mixing and grinding the components. On one hand, through the selection design of the metal nano conductive particles and the selection of themixed solvent, the agglomeration of the nano conductive particles can be prevented; on the other hand, through the preparation method of gradually dispersing and mixing the metal nano conductive particles, the dispersing performance of the metal nano conductive particles in the whole ink material is improved, so that the conductive ink has beneficial conductivity.

Description

technical field [0001] The invention relates to the field of ink, in particular to a metal conductive ink and a preparation method thereof. Background technique [0002] With the rapid development of the modern printed electronics industry, conductive ink, as an important printing material, is widely used in electronic labels, organic displays, transistor arrays, photovoltaic cells, flexible electronic devices and other fields. With the improvement of conductive ink development technology, its market application scope is also expanding. In the field of electronic labels and crystalline silicon solar cells, conductive ink can form conductive lines on insulating substrates by direct printing process, which has simple process, low material cost and less environmental pollution. At present, the membrane switch and electronic label markets are relatively mature conductive ink application markets. [0003] In the field of conductive inks, metallic silver-based conductive inks cu...

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a metal conductive ink and its preparation method, which can solve the characteristics of easy oxidation, easy agglomeration and poor stability existing in the existing metal conductive ink