▎ 摘　　要

NOVELTY - Preparing environmentally friendly industrialized ferroferric oxide/reduced oxidized graphite comprises (i) preparing graphene dispersion containing iron salt mixed solution containing iron (2+) and iron (3+) in soluble iron salt solution, (ii) mixing the graphene dispersion liquid with the iron salt mixed solution in reaction kettle, and introducing nitrogen protection and heating and stirring, (iii) adding alkaline solution to adjust the pH value to keep the temperature to perform first-stage reaction, (iv) adding reducing agent and keeping the temperature for second-level reaction, (v) turning out the reaction product, adding magnetic field to precipitate, (vi) washing the precipitate and drying the iron-oxide/reduced oxidized graphene nanoparticles in nanometer wave-absorbing particle. USE - The method is useful in field of magnetic material. ADVANTAGE - The method does not use toxic and harmful raw materials and has excellent controllability and stability. The method combines the dielectric loss and magnetic loss of the electromagnetic wave, and solves the sedimentation problem in the process of blending and function of the particle with large specific gravity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the ferroferric oxide/reduced graphene oxide/resin absorbing composite material adopting raw material is the ferroferric oxide/reduced graphene oxide nano-absorbing particles prepared by the green industrialized preparation method of ferroferric oxide/reduced graphene oxide, comprising (1) uniformly mixing resin, curing agent, ferric oxide/reduced graphene oxide nano-absorbing particles to obtain blend, (2) dividing the blend obtained in the step (1) into at least three parts, (3) pouring first part of the blend into the mold to make it level, and subjecting the resin to gelation reaction at certain temperature, (4) pouring the second blend into the mold to make it level when the resin in the step (3) reaches the gel state, and subjecting the resin to gelation reaction at the same temperature as in the step (3), (5) repeating the operation until all the blends in the step (2) into the mold, and (6) placing the mold of the step (5) at certain temperature to make the resin undergo curing reaction, and releasing the mold to obtain the ferroferric oxide/reduced graphene oxide/resin wave-absorbing composite material after the curing reaction is completed.