This application relates to the field of
flexible electronics technology, specifically to an ultrathin flexible electronic conductor material and its preparation method. The preparation method of the ultrathin flexible electronic conductor material is as follows: (1) adding conductive filler, dispersant and binder to deionized water, ultrasonically dispersing to obtain a conductive
slurry,
coating the conductive
slurry on the surface of a flexible substrate layer, and
drying and curing to obtain a flexible substrate layer with a conductive functional layer; (2) preparing a
polyethylene terephthalate solution,
coating the
polyethylene terephthalate solution on the surface of the conductive functional layer, and curing to obtain the ultrathin flexible electronic conductor material. This ultrathin flexible electronic conductor material has low
sheet resistance,
high conductivity stability, excellent bending resistance and
solvent resistance, and significantly improved tensile strength and elongation at break, exhibiting excellent mechanical properties, making it suitable for long-term reliable application of flexible electronic devices.