The invention relates to a low-silver-content composite conductive
silver paste and a preparation method thereof, and belongs to the technical field of electroconductive
slurry. The low-silver-content composite conductive
silver paste can be used for
screen printing. At present, the conductive
silver paste preparation technology in China is high in production cost, complex in preparation technology and the like. According to the low-silver-content composite conductive silver paste, silver-plated
copper powder and silver-plated glass
powder are adopted to replace pure silver
powder, so that the production cost of the silver paste is effectively reduced; the mode that spherical particles and platy particles are combined is selected, so that the
conductivity of the silver paste is improved; the silver-plated glass powder with the low
specific density is adopted, so that the stability of the conductive silver paste is improved, and the storage life of the silver paste is prolonged. The problems existing in silver paste production at present in China are well solved, the sliver paste preparation technology is simple, the silver paste is good in
conductivity and impressionability (including automatic and semi-automatic
screen printing and the like), and high in adhesion capacity with various substrates such as a PET film, and has significant application value.