▎ 摘　　要

NOVELTY - Preparing a graphene-loaded absorbing material comprises e.g. preparing pre-oxidized graphite powder by adding potassium persulfate and phosphorus pentoxide to concentrated sulfuric acid to form a mixture, and the resulting mixture, stirring the mixture, heating and stirring, and heating and stirring, then diluting the mixture with distilled water, diluting the pH of the mixture, and filtering with distilled water after allowing to stand for 36 hours, drying at room temperature, the mass ratio of graphite powder, potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid, adding the dried mixture to concentrated nitric acid and stirring, stirring uniformly, adding potassium nitrate, stirring, and then cooling by adding potassium permanagnate, stirring, and cooling, adding potassium permanagnate, and stirring to obtain a pre-oxidized graphite mixture. USE - The method is useful for preparing a graphene-loaded absorbing material. ADVANTAGE - The method: is convenient and can produce a wave absorbing material with excellent wave absorbing performance. DETAILED DESCRIPTION - Preparing a graphene-loaded absorbing material comprises (i) preparing pre-oxidized graphite powder by adding potassium persulfate and phosphorus pentoxide to concentrated sulfuric acid to form a mixture, and the resulting mixture pH is 1.5, stirring the mixture at 60 degrees C for 1-2 hours, then heating at a rate of 5 degrees C/minute to 80 degrees C and stirring for 2-4 hours, and heating at 2 degrees C/min to 87 degrees C and stirring for 1-2 hours, then diluting the mixture with distilled water, diluting the pH of the mixture to 3.6, and filtering with distilled water after allowing to stand for 36 hours, thus the pH of the mixture is 6-7, after drying at room temperature, the mass ratio of graphite powder, potassium persulfate, P2O5 and concentrated sulfuric acid is 1-3:1-2:1-2:5-10, adding the dried mixture to concentrated nitric acid and stirring 45-60 minutes, the pH is 2-4, the mass ratio of dried mixture to concentrated nitric acid is 1-4:50-100, stirring uniformly, adding potassium nitrate for the first time at 8 degrees C, stirring for 30 minutes, and then cooling by adding potassium permanagnate for the second time at 12 degrees C, stirring for 30 minutes, and cooling to 15 degrees C, adding potassium permanagnate for the third time, and stirring for 20 minutes to obtain a pre-oxidized graphite mixture, the mass ratio of adding KMnO4 three times is 1:2:3, and the ratio of the dried mixture to the total KMnO4 is 1-2:10-15.