▎ 摘　　要

NOVELTY - The method involves completely dissolving dry resin under constant temperature heating condition and volatilizing a non-proton polar solvent part to obtain a PFSA stupe polymer solution. Non-proton polar solvent is added, ultrasonically dispersed and stand at room temperature to obtain nano-sheet dispersion liquid. The nano-sheet dispersion liquid is added into the PFSA type polymer solution. The nano-sheet dispersion liquid is mixed uniformly, cast in a mold under the heating condition, and stand to form a film. The nano-sheet dispersion liquid is cooled to room temperature for taking out the formed film as namely a two-dimensional material composite proton exchange membrane for hydrogen isotope separation. USE - Method for preparing two-dimensional material composite proton exchange membrane for separating hydrogen isotopes. ADVANTAGE - The n=method enables preparing the two-dimensional material composite proton exchange membrane with better mechanical performance and hydrogen isotope screening ability, reducing energy consumption of electrolytic separation of tritium, and improving protium-tritium separating coefficient. DESCRIPTION OF DRAWING(S) - The drawing shows a photography of a dispersion SEM image graphene.