Low-silver-content graphene composite conductive silver paste and preparation method thereof

A technology of composite conductivity and silver content, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc. Density, reduced production costs, and improved electrical conductivity
CN104200875AInactive Publication Date: 2014-12-10NINGBO PLUS ONE NEW MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO PLUS ONE NEW MATERIAL
Publication Date
2014-12-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses low-silver-content graphene composite conductive silver paste. The low-silver-content graphene composite conductive silver paste is composed of, by weight, 5-15 parts of graphene microchips, 30-50 parts of silver plated glass powder, 5-15 parts of macromolecule resin, 20-40 parts of organic solvent, 1-4 parts of levelling agent and 0.1-1.5 parts of defoamer. The conductive particle graphene microchips and the silver plated glass powder adopted in the silver paste are of a sheet structure respectively, gaps among conductive particles are effectively reduced, stacking density of conductive films is increased, contact area of the particles is enlarged, contractility of the films is reduced, and conductivity of the silver pates is improved; being low in weight and only accounting for 10-20% of pure silver powder, the graphene microchips and the silver plated glass powder which are light do not easily settle in organic carriers, so that stability of the conductive silver paste is improved.
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Description

technical field

[0001] The invention belongs to the technical field of conductive paste, and relates to a low-silver-content graphene composite conductive silver paste that can be used for screen printing and a preparation method thereof. Background technique

[0002] In the field of conductive paste, silver-based paste has the characteristics of high conductivity, stable performance, good printability, and strong bonding strength with the substrate, and is widely used in the production of various electronic components, such as integrated circuits, membrane switches, Electric heating diaphragm, etc. Conductive silver paste is generally composed of silver powder, organic vehicle and other additives. In order to achieve the conductivity required by the application, usually the weight ratio of silver powder in the entire paste must reach 60-85%. This part of the cost accounts for the entire cost of conductive silver paste. more than 90 percent. In the production of many elect...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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