The invention relates to the technical field of new material preparation, in particular to
UV curing conductive
silver paste and a preparation method thereof. The preparation method of the UV-cured conductive
silver paste comprises the following steps: step 1, dissolving a
photoinitiator in a
reactive diluent under a heating condition, and cooling to obtain a photo-
initiation curing liquid; step 2, adding a
prepolymer, a conductive additive and conductive
powder into the photo-
initiation curing liquid in the step 1, and
grinding to obtain a conductive
adhesive; wherein the conductive auxiliary agent is prepared from at least one of
tetra-neo-alkoxy bis (didecyl
phosphorous acid acyloxy)
titanate, isopropoxy dioleic acid acyloxy (
dioctyl phosphate acyloxy)
titanate and isopropoxy trioleic acid acyloxy
titanate. The conductive auxiliary agent is prepared from at least one of the following components: tetrakis (neo-alkoxy) bis (didecyl
phosphorous acid acyloxy) titanate, isopropoxy dioleic acid acyloxy (
dioctyl phosphate acyloxy) titanate and isopropoxy trioleic acid acyloxy titanate. According to the invention, the titanate
coupling agent with a special structure is innovatively introduced as a conductive auxiliary agent, so that the use amount of silver
powder can be effectively reduced, the
conductivity of the
silver paste can be improved, the flexibility of the cured silver paste can be enhanced, and the bending resistance can be improved.