▎ 摘　　要

NOVELTY - Preparation of ferric oxide/reduced graphene oxide/polyimide aerogel electromagnetic wave absorbing material involves (s1) preparing ferric oxide/reduced graphene oxide by adding ferrous salt and ferric salt to water, uniformly stirring, adding sodium hydroxide solution to adjust the pH of the solution to 4, adding a graphene oxide aqueous solution, adding sodium hydroxide solution under stirring and heating conditions to make the solution alkaline, reacting to obtain product, growing spherical ferroferric oxide nanoparticles on reduced graphene oxide, carrying out magnetic separation of the product, washing and drying, (s2) preparing polyamide, (s3) preparing ferric oxide/reduced graphene oxide/polyimide aerogel precursor by adding the polyamide to a mixed solution of triethylamine and water, magnetically stirring, adding ferric oxide/reduced graphene oxide, stirring, freeze drying and calcining in an inert atmosphere. USE - Preparation of ferric oxide/reduced graphene oxide/polyimide aerogel electromagnetic wave absorbing material used as key material for protecting human beings and precision equipment. ADVANTAGE - The method provides ferric oxide/reduced graphene oxide/polyimide aerogel electromagnetic wave absorbing material with zero-dimensional ferroferric oxide nano spheres which grows on the two-dimensional nanosheets, the combination mode ensures the ferroferric oxide nano spheres are dispersed more uniformly. The nano scale ferroferric oxide spheres have small-size effect which is good for promoting the magnetic performance of the ferroferric oxide.