▎ 摘　　要

NOVELTY - Preparing self-repairing hydrophilic porous photothermal film comprises mixing polyethylene glycol, polytetrahydrofuran and dicyclohexylmethane-4,4'-diisocyanate for polymerization reaction to obtain polyurethane (PU) hydrophilic polymer, mixing the PU hydrophilic polymer with an organic solvent to obtain a PU hydrophilic polymer solution, mixing the carbon-based photothermal material and the salt template reagent to obtain a mixture, mixing the PU hydrophilic polymer solution and the mixed material and solidifying, removing the organic solvent, washing with water and drying. USE - The film is useful in the field of photothermal water evaporation (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for self-repairing hydrophilic porous photothermal film prepared according to above mentioned method.