▎ 摘　　要

NOVELTY - Preparation of graphene supported nano nickel absorbing composite material includes taking graphite, adding with hydrochloric acid solution, stirring, repeatedly washing with deionized water until neutral pH, drying, and standing; adding with potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid, adjusting pH, stirring, heating, stirring, heating, stirring, diluting with distilled water, adjusting pH, filtering with distilled water, adjusting pH, and drying at room temperature; adding with concentrated nitric acid, stirring, adjusting pH, and cooling. USE - Method for preparing graphene supported nano nickel absorbing composite material (claimed). ADVANTAGE - The method is convenient. The product has microwave absorption property and excellent absorbing material. DETAILED DESCRIPTION - Preparation of graphene supported nano nickel absorbing composite material comprises: (A) taking 50-200 meshes graphite, adding with 35 wt.% hydrochloric acid solution, stirring for 30 minutes, repeatedly washing with deionized water until neutral pH, drying, and standing; adding with potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid at mass ratio of 1-3:1-2:1-2:5-10, adjusting pH to 1.5, stirring at 60 degrees C for 1-2 hours, heating to 80 degrees C at 5 degrees C/minute, stirring for 2-4 hours, heating to 87 degrees C at 2 degrees C/minute, stirring for 1-2 hours, diluting with distilled water, adjusting pH to 3.6, filtering with distilled water for 36 hours, adjusting pH to 6-7, and drying at room temperature; adding with concentrated nitric acid at mass ratio of 1-4:50-100, stirring for 45-60 minutes, adjusting pH to 2-4, cooling to - 8 degrees C, adding with potassium permanganate (KMnO4), stirring for 30 minutes, cooling to - 12 degrees C, adding with KMnO4, stirring for 30 minutes, cooling to - 15 degrees C, adding with KMnO4, and stirring for 20 minutes; filtering, drying, placing into muffle furnace, and repeatedly heating to 1100 degrees C for 10-20 seconds, 1150 degrees C for 15-20 seconds and 1180 degrees C for 20-30 seconds; (B) adding into incubator, heating to 40 degrees C for 3 hours, adding with distilled water, reacting for 2.5 hours, heating to 40 degrees C, adding with 1-1.5 times distilled water and hydrogen peroxide at volume ratio of 4-20:1, reacting for 10-60 minutes, centrifuging at 8000-10000 revolutions/minute (rpm) for 10 minutes, washing with 10-50 times hydrochloric acid solution, and dialyzing for 7-8 days; dissolving in dimethyl sulfoxide, adding with N-hydroxysuccinimide and homemade surfactant, stirring at 35 degrees C for 2 hours, suction filtering, washing, and drying to obtain graphite oxide; (C) cooling at room temperature, adding 1 g graphite oxide to 500 g deionized water into reactor, ultrasonically dispersing, stirring for 10-15 minutes, adding ammonia aqueous solution, adjusting pH to 11, heating to 70 degrees C, adding with 5-10 g aqueous sodium borohydride solution, reacting for 30-60 minutes, cooling to 15 degrees C, adding with 25 g amino acid, reacting for 2-4 hours, standing for 3 hours, suction filtering, removing solvent, washing with deionized water for more than 2 times, dispersing filtrate in 400-1600 g deionized water, adding 1-4 g hydrazine hydrate, reacting at 80 degrees C for 12-24 hours, suction filtering, purifying, washing with deionized water for more than 2 times, collecting filtrate, and drying for 24-48 hours to obtain sulfonated graphite; (D) dispersing, adding 1-2 g sulfonated graphite in 1-10 g polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, freeze-drying at - 10 to 30 degrees C, adding into 500 ml ethylene glycol, and ultrasonically dispersing; adding with 0.1 mol/ml 20-40 ml chlorinated polyethylene glycol solution, 6-25 g polyvinylpyrrolidone and 10-50 g ammonium acetate, dissolving, dispersing in 500-1000 mL ethylene glycol, mixing, dispersing, adding with ammonia, and adjusting pH to 9-11; and (E) adding 10 ml clear solution into reaction kettle, sealing, heating to 130 degrees C for 2 hours, heating to 150 degrees C at 2-4 degrees C/minute for 4 hours, heating to 200 degrees C at 3-6 degrees C/minute for 3 hours, cooling to 180 degrees C at 5-7 degrees C/minute for 2 hours, heating to 200 degrees C at 3-6 degrees C/minute for 7 hours, taking out, cooling to room temperature at 3-6 degrees C/minute, centrifugally separating at 8000-10000 rpm for 10 minutes, washing thrice with anhydrous ethanol and deionized water, vacuum drying at 50-70 degrees C for 24 hours; adding 5 g aniline monomer and 5-10 g sodium dodecylbenzene sulfonate at mass ratio of 1-1.5:8-15 and ultrasonically dispersing for 65 minutes; and dissolving 3 g ammonium persulfate in 80-120 ml distilled water, slowly adding dropwise to resulting product, reacting, stirring for 15 hours, filtering, washing with anhydrous ethanol and distilled water until colorless, and vacuum drying at 50-70 degrees C for 24-36 hours. The ratio of first KMnO4, second KMnO4 and third KMnO4 is 1:2:3. The ratio of dry mixture and total KMnO4 is 1-2:10-15.