| abstract |
The invention discloses a method for preparing a graphene nanosheet/cellulose aerogel composite material, which specifically includes: first, adding graphene nanosheets into deionized water, and ultrasonically dispersing to form a graphene nanosheet solution; The cellulose aerogel is immersed in the graphene nanosheet solution, ultrasonically dispersed, and dried to obtain the graphene nanosheet/cellulose aerogel; finally, the graphene nanosheet/cellulose aerogel is soaked in polyvinylidene fluoride /N'N dimethylformamide solution, curing and hot pressing to obtain a graphene nanosheet/cellulose aerogel composite material. Through the combination of porous cellulose aerogel and layered graphene, a three-dimensional multilayer structure containing a conductive network was obtained, and a composite material with low filler content, low thickness, and high electromagnetic shielding performance was obtained. At the same time, the preparation method is simple and feasible, has low production cost, and is easy to mass-produce. |