Patent ID: 11945931
Assignee: SUZHOU INSTITUTE OF NANO-TECH AND NANO-BIONICS (SINANO) , CHINESE ACADEMY OF SCIENCES
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC H  C  Y | IPC C

Claim 0:
1. A preparation method of a recyclable nano composite, comprising:
providing a reinforcement material and conducting a pretreatment, wherein the reinforcement material is a combination of a conductive material and an insulating material, the conductive material is selected from one or a combination of more than two of a carbon nanotube, graphene, a nano carbon fiber, and a silver nano wire, the conductive material forms a continuous network structure; and the insulating material is selected form boron nitride and/or alumina; the pretreatment comprises: heating the reinforcement material to 200-450° C. in an air atmosphere, then placing a heated reinforcement material in a diluted hydrochloric acid solution, performing a reflux stirring for 2-6 h, and performing a high-temperature treatment on a resulting reinforcement material at 600-2000° C. in an inert protective atmosphere for 1-10 h;
dispersing the reinforcement material into an organic solvent to form a solution containing the reinforcement material, wherein a concentration of the reinforcement material in the solution containing the reinforcement material is 0.1 wt %-5 wt %;
adding a matrix material into the solution containing the reinforcement material, curing and molding to obtain the recyclable nano composite;
or, directly dispersing the reinforcement material into a solution containing a matrix material by grinding or stirring, then curing and molding to obtain the recyclable nano composite;
or, molding the reinforcement material to form a film, a fiber, or a three-dimensional porous network structure formed by the reinforcement material, wherein a thickness of the film is 5-500 μm, and a diameter of the fiber is 5-500 μm; and compounding the film, the fiber, or the three-dimensional porous network structure with a matrix material to obtain the recyclable nano composite, wherein a mass ratio of the reinforcement material to the matrix material is (0.001:1)-(4:1),
the recyclable nano composite comprises the matrix material and the reinforcement material evenly dispersed into the matrix material, and a content of the reinforcement material in the recyclable nano composite is 0.1-80 wt %.