▎ 摘　　要

NOVELTY - Preparing recyclable nano composite material comprises providing reinforcement material including conductive material, or conductive material and insulating material, where the conductive material includes carbon nanotube, graphene, carbon nano fiber, and/or silver nano wire, and the conductive material can form a continuous network structure and compounding reinforcement material and the base material. USE - The method is useful for preparing recyclable nanocomposite material. ADVANTAGE - The recyclable nano composite material has high strength, high toughness, conductivity, and electromagnetic shielding, can recover the reinforcement material through simple processing. The method does not damage the structure of the reinforcement material, after the recovery, the reinforcement material still maintains high mechanical properties, and the composite material performance after reuse is as good as the original composite materials. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a recyclable nano composite material prepared by the above method, comprising base material and 0.1-80 wt% reinforcement material uniformly dispersed in the base material; and (2) a method for recycling reinforcement material, comprising in an air atmosphere, subjecting recyclable nano composite material to high-temperature treatment at 200-400degrees Celsius in the air for 1-6 hours, and in a protective atmosphere at 600-2000degrees Celsius for 1-10 hours to obtain recycled reinforcement materials, Or, mixing the recyclable nano composite material with a solvent that can dissolve the base material uniformly, and heating and refluxing for 2-24 hours, filtering, collecting and drying the obtained reinforcement materials, and continuously processing at 600-2000degrees Celsius for 1-10 hours in a protective atmosphere to obtain recycled reinforcement materials, alternatively, selecting two points as electrode connection points in at least a partial area of the recyclable nano composite material, and connecting electrode, applying voltage to both ends of the electrode to electrically heat the recyclable nano composite material, and removing base material by self-energizing heating, where, the power density of the electric heating is 500-20000 W/m2.