Black conductive ink for adhesive tape as well as preparation method and application of black conductive ink

Abstract

The invention provides black conductive ink for an adhesive tape and a preparation method and application thereof.The black conductive ink for the adhesive tape comprises a combination of specific parts of polyurethane resin, carbon black, dendritic silver-plated copper powder and a curing agent, the specific parts of carbon black are added into a polyurethane resin matrix, and the dendritic silver-plated copper powder is matched with the specific parts of carbon black; the black conductive ink for the adhesive tape is endowed with excellent conductivity while ensuring high dyeing property, high adhesive force and high shielding property, is excellent in conductivity stability, can be used together with a conductive material in electronic equipment when being applied to the electronic equipment, is remarkable in effect, and is suitable for popularization and application. Especially, the electromagnetic shielding performance of the conductive shielding material is not affected when the conductive shielding material is applied to surface coloring of the conductive shielding material.

Description

technical field [0001] The invention belongs to the technical field of inks, and in particular relates to a black conductive ink for adhesive tapes and a preparation method and application thereof. Background technique [0002] The development of the electronics industry is changing with each passing day. With the increase of compact electronic equipment, the probability of short circuit and noise caused by various battery interference (EMI) in a small space will also increase. Traditional conductive materials mainly include conductive fabrics, metal conductive materials and conductive foam, etc. , this type of conductive material cannot achieve a completely black appearance in order to meet the requirements of shading or black appearance, and it is necessary to print and color the surface of the material. However, the ink layer used for coloring has poor conductivity, so it will affect the conductive material. Conductive shielding performance has a large negative impact. ...

AI Technical Summary

Problems solved by technology

[0005] CN106189525A discloses a conductive ink for RFID antenna printing, which belongs to the technical field of conductive ink, and its technical points include that the conductive ink includes the following raw materials in parts by weight: 20-30 parts of epoxy resin; 20 parts of isocyanate-terminated polyurethane prepolymer ~30 parts; 40~60 parts of nano silver copper tungsten nickel alloy particles; 1~5 parts of acetylene carbon black; 10~30 parts of solvent; 1~3 parts of coupling agent; 1~3 parts of curing agent; part; the invention aims to provide a conductive ink for RFID antenna printing; it is used to meet the requirements of the RFID antenna printed circuit, and to solve the problem of poor adhesion of the ink layer after printing, high resistivity, high curing temperature, and Insufficient flexibility and unstable conductivity

[0006] However, although the conductive ink provided in the above-mentioned prior art can ensure that the ink has both conductivity and coloring properties, the conductive ink provided has poor conductivity, especially poor conductivity stability, and it will be used in electronic equipment. As the use time increases, the conductivity gradually decreases, and the conductivity is unstable

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