▎ 摘　　要

NOVELTY - Preparing nano-cellulose-based pressure sensing material comprises physical blending makes waterborne polyurethane overlap between inner fibers of nanocellulose, and using chemical deposition to load graphene oxide on surface of inner fibers, complex aerogel is prepared by freeze-drying, aerogel undergoes a reduction reaction and freeze-dried again to prepare a reduced graphene oxide/waterborne polyurethane/nanocellulose complex aerogel, specific steps are physical blending of nanocellulose, waterborne polyurethane and freeze-dried protective agent, adding ultrasonically dispersed graphene oxide solution, and performing physical crosslinking blending under normal temperature and pressure conditions, deforming by ultrasound and centrifugation, placing in enzyme-labeled plate, and preparing GO/WPU/CNF aerogel by vacuum freeze-drying, placing GO/WPU/CNF aerogel in a solution containing 1-5% ascorbic acid, and reducing graphene oxide to reduced graphene oxide by magnetic stirring. USE - The method is useful for preparing nano-cellulose-based pressure sensing material. ADVANTAGE - The process is simple and can be applied to the technical field of pressure sensing material preparation. DETAILED DESCRIPTION - Preparing nano-cellulose-based pressure sensing material comprises physical blending makes waterborne polyurethane overlap between inner fibers of nanocellulose, and using chemical deposition to load graphene oxide on surface of inner fibers, complex aerogel is prepared by freeze-drying, aerogel undergoes a reduction reaction and freeze-dried again to prepare a reduced graphene oxide/waterborne polyurethane/nanocellulose complex aerogel, specific steps are physical blending of nanocellulose, waterborne polyurethane and freeze-dried protective agent to obtain WPU/CNF hydrogel, adding ultrasonically dispersed graphene oxide solution, and performing physical crosslinking blending under normal temperature and pressure conditions to obtain GO/WPU/CNF hydrogel, deforming GO/WPU/CNF hydrogel by ultrasound and centrifugation, placing in an enzyme-labeled plate, and preparing GO/WPU/CNF aerogel by vacuum freeze-drying, placing GO/WPU/CNF aerogel in a solution containing 1-5% ascorbic acid, and reducing graphene oxide to reduced graphene oxide by magnetic stirring in a water bath at 80 degrees C to obtain complex aerogel and placing reduced complex aerogel in vacuum freeze-drying to prepare rGO/WPU/CNF aerogel. An INDEPENDENT CLAIM is also included for nanocellulose-based pressure sensing material prepared by the above mentioned method.