▎ 摘　　要

NOVELTY - Multifunctional total heat exchange membrane comprises graphene, graphene oxide, ionic liquid and high molecular polymer, and mass ratio of the graphene, graphene oxide, ionic liquid and high molecular polymer is: 1-2:1-6:1-5:10-30. USE - Multifunctional full heat exchange membrane. ADVANTAGE - Multifunctional total heat exchange membrane has total heat exchange efficiency, the sterilization and mildew-proof effect, the mechanical strength and the service life of the total heat exchange membrane are improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of a kind of multifunctional total heat exchange membrane, which involves: i. dispersing graphene and graphene oxide in a solvent according to a certain proportion, and ultrasonically treat it for 0.5-3 hours to make it evenly dispersed; ii. adding appropriate amount of ionic liquid to the solution in step 1, and stirring evenly; iii. adding appropriate amount of high molecular polymer to the solution in step 2, stirring evenly, defoaming and standing; iv. scrape coating the solution of Step 3 on the substrate, drying for 20-24 hours, heat treatment, and finally peel off the substrate to obtain a full heat exchange membrane with a certain thickness.