▎ 摘　　要

NOVELTY - Preparation of composite film functional material based on graphene/polypyrrole nanotube three-dimensional intercalation structure involves: dripping an initiator into an aqueous solution of a structure directing agent, stirring, and mixing to obtain one-dimensional template dispersion; adding a pyrrole monomer to the dispersion, polymerizing at a constant temperature for 3-6 hours, and washing precipitate with ethanol and deionized water until the pH of filtrate is 6-8 to obtain highly conductive hollow polypyrrole nanotube (ppyNT); dispersing ppyNT in ethanol under the action of ultrasound, and adding graphene oxide (GO) to the ppyNT dispersion, suction filtering mixed dispersion of ppyNT and GO with a nylon microporous membrane as a substrate to obtain an independent self-supporting GO/ppyNT composite membrane; and immersing in a beaker containing a reducing agent for chemical reduction, washing with deionized water and ethanol, drying, and thermally reducing. USE - Preparation of composite film functional material used for electromagnetic shielding of flexible electronic device. ADVANTAGE - The method provides highly conductive polypyrrole nanotube with uniform size. The electromagnetic shielding material not only has high electromagnetic shielding efficiency, but also has excellent folding resistance, anticorrosive effect, and high and low temperature resistance. DETAILED DESCRIPTION - Preparation of composite film functional material based on graphene/polypyrrole nanotube three-dimensional intercalation structure involves: dripping an initiator into an aqueous solution of a structure directing agent, stirring, and uniformly mixing to obtain one-dimensional template dispersion liquid; adding a pyrrole monomer to the dispersion liquid, polymerizing at a constant temperature for 3-6 hours, and washing precipitate with ethanol and deionized water until the pH of filtrate is 6-8 to obtain highly conductive hollow polypyrrole nanotube (ppyNT); dispersing ppyNT in ethanol under the action of ultrasound, then adding graphene oxide (GO) to the ppyNT dispersion, suction filtering mixed dispersion of ppyNT and GO with a nylon microporous membrane as a substrate to obtain an independent self-supporting GO/ppyNT composite membrane; and immersing in a beaker containing a reducing agent for chemical reduction, washing with deionized water and ethanol, drying, paving in a porcelain boat, placing the boat in a carbonization furnace, and thermally reducing at high temperature for 1-3 hours. The molar ratio of structure directing agent and initiator is 1:(6-10). The molar ratio of structure directing agent and pyrrole monomer is 1: (5-10). The mass ratio of GO to ppyNT is 1:(0.67-0.83).