▎ 摘　　要

NOVELTY - The method comprises providing first emulsified mixture by blending wave-absorbing particles (11) in graphene solution so that the graphene solution is attached to the wave-absorbing particles, providing second emulsified mixture by mixing the first emulsified mixture with resin solution, providing third emulsified mixture by mixing the second emulsified mixture with an interface modifier, and providing the wave-absorbing particles, resin solution and graphene solution of the third emulsified mixture evenly on conductive substrates by submerging substrates in the third emulsified mixture. USE - The method is useful for making a wave-absorbing sheet (claimed) that is useful for protecting mobile phones, laptop computers, other products, and radio-frequency identification devices against electromagnetic interference. ADVANTAGE - The method is capable of economically making the thin and flexible wave-absorbing sheet with light weight, wide absorption frequency band, high absorption rate and excellent thermal stability and mechanical properties. DETAILED DESCRIPTION - The method comprises providing first emulsified mixture by blending wave-absorbing particles (11) in graphene solution so that the graphene solution is attached to the wave-absorbing particles, providing second emulsified mixture by mixing the first emulsified mixture with resin solution, providing third emulsified mixture by mixing the second emulsified mixture with an interface modifier, providing the wave-absorbing particles, resin solution and graphene solution of the third emulsified mixture evenly on two conductive substrates by submerging the conductive substrates in the third emulsified mixture and imposing voltage on the conductive substrates, removing the conductive substrates for providing a wave-absorbing sheet, and washing and drying the wave-absorbing sheet. A concentration of the wave-absorbing particles in the first emulsified mixture is 0.1-5%. The graphene solution includes graphene dissolved in organic solvent. A concentration of the graphene in the grapheme solvent is 0.1-5%. Each of the wave-absorbing particles includes 10-80 wt.% of a shell (112) and a core (111) placed in the shell. The shell is made of metal, and the core is made of plastics. The wave-absorbing particles are made by electroplating the metal on the plastics and made with a diameter of 100 nm to 50 mu m and a shape consisting of spherical, elliptical and hollow spherical. The shell has thickness of 100-550 nm. The step of providing the second emulsified mixture includes stirring second emulsified mixture for 5 minutes to 1 hour, and providing the resin solution as adhesive. The resin solution includes acrylic resin solution and epoxy resin solution, and has a concentration of 0.1-5%. The interface modifier has a concentration of 100-400 gram/l. The step of providing the third emulsified mixture evenly on the conductive substrates includes connecting the conductive substrates to the positive and negative electrodes of a power supply. The power supply provides operative voltage of 30-200 volts. The conductive substrates are made with an area of 1 cm2 to 1 m2. The electrophoresis lasts for 1 minute to 1 hour. The coating is made with thickness of 5-500 mu m. The step of removing the conductive substrates includes providing an eroding liquid for eroding the conductive substrates for 1-24 hours. A concentration of the eroding liquid is higher than 20 vol.%. The step of washing and drying the wave-absorbing sheet includes drying the wave-absorbing sheet at a temperature of 50-200 degrees C. DESCRIPTION OF DRAWING(S) - The diagram shows a schematic cross-sectional view of a wave-absorbing particle of a sheet. Wave-absorbing particles (11) Core (111) Shell. (112)