The invention discloses a method for preparing a
carbide film by carbonizing
graphene reinforced
polyimide resin, and relates to a method for preparing a
carbide film. The method solves the technical problems of high carbonizing temperature,
high energy consumption, long carbonizing period and low carbonizing rate and low strength of the
carbide film in the conventional method for preparing the carbide film. The method comprises the following steps of: 1, adding 4,4'-diamino
diphenyl ether (ODA) and 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA) into N,N-
dimethyl acetamide (DMAC), and performing mechanical stirring to obtain a
polyamide acid (PAA) solution; 2, adding
graphene into the PAA solution, and performing in-situ
polymerization reaction to obtain a solution A; 3, spreading the solution A on a clean glass plate, heating to the temperature of 60 DEG C and preserving the heat for 2 hours, heating to the temperature of 100 DEG C and preserving the heat for 1 hour, heating to the temperature of 200 DEG C and preserving the heat for 1 hour, heating to the temperature of 300 DEG C and preserving the heat for 1 hour, and thus obtaining a
composite film; and 4, carbonizing, naturally cooling to
room temperature, and thus obtaining the carbide film. The carbide film has excellent mechanical properties; and because the adding proportion of the
graphene is increased, the mechanical properties of the carbide film are improved, the specific
capacitance of the graphene is also improved, and the carbide film is suitable to be used as an
electrode material.