Polyimide/graphene X-ray window film and preparation method thereof

The invention provides a polyimide/graphene X-ray window film and a preparation method thereof, relates to the material testing field of X-ray application, specifically relates to an X-ray window film and a preparation method thereof, and aims to solve the problem that a beryllium window prepared by the prior art cannot be used barely in air due to toxicity and difficult to process. The polyimide/graphene X-ray window film is prepared from graphene or oxidized graphene, a diamine monomer, a dianhydride monomer and an organic solvent. The preparation method of the polyimide/graphene X-ray window film comprises the following steps of: 1, premixing to obtain a premixed solution; 2, finally mixing to obtain a colloid to be coated; 3, coating and carrying out thermal imidization treatment to obtain the polyimide/graphene X-ray window film. The preparation method provided by the invention is mainly used for preparing the polyimide/graphene X-ray window film.