▎ 摘　　要

NOVELTY - Graphene modified cable material comprises 0.2-0.5 pts. wt. magnetic particles, 0.4-0.8 pts. wt. gelatin, 4-8 pts. wt. graphene powder, 2-5 pts. wt. hyperbranched silicone polyurethane acrylate prepolymer, 0.4-0.8 pts. wt. surface active agent, 1-2 pts. wt. acetic acid solution, 2-4 pts. wt. isopropanol, 0.6-1 pts. wt. glutaric dialdehyde aqueous solution, 1-2 pts. wt. flame retardant, 0.5-1 pts. wt. stabilizer, and 74.9-87.9 pts. wt. matrix resin. USE - Graphene modified cable material for high voltage direct current cable. ADVANTAGE - The graphene modified cable material has good dispersibility in the matrix resin, strong space charge inhibiting ability, effectively improves the mechanical performance of the cable material, and has good application prospect and is suitable for large scale popularization. The graphene modified cable material is prepared in a simple and easy manner. DETAILED DESCRIPTION - Graphene modified cable material comprises 0.2-0.5 pts. wt. magnetic particles, 0.4-0.8 pts. wt. gelatin, 4-8 pts. wt. graphene powder, 2-5 pts. wt. hyperbranched silicone polyurethane acrylate prepolymer, 0.4-0.8 pts. wt. surface active agent, 1-2 pts. wt. acetic acid solution, 2-4 pts. wt. isopropanol, 0.6-1 pts. wt. glutaric dialdehyde aqueous solution, 1-2 pts. wt. flame retardant, 0.5-1 pts. wt. stabilizer, and 74.9-87.9 pts. wt. matrix resin. The graphene modified cable material is prepared by mixing gelatin to acetic acid solution, then swelling at room temperature for 20-40 minutes, and heating at a temperature of 45-55 degrees C, and then mixing with surfactant and magnetic microparticles, and ultrasonically dispersing for 4-7 minutes, by stirring under stirring speed of 160-200 revolutions/minute to obtain mixture. The mixture is added with propanol and graphene powder then ultrasonically dispersed for 2-4 minutes, then mixed with glutaraldehyde solution for reaction, and the material is discharged after 100-140 minutes, then subjected to magnetic separation, alcohol washing, and oven drying to obtain magnetic gelatin particles with adsorbed graphene powder. The obtained magnetic gelatin particles with adsorbed graphene powder is mixed with hyperbranched silicone urethane acrylate prepolymer, and then irradiated with ultraviolet lamp to further polymerize the prepolymer and hyperbranched prepolymer macromolecules, then graphene fine powders are gradually coated in the internal cavity and under the binding of gelatin and the adsorption of magnetic particles, and graphene fine powder and hyperbranched macromolecules are firmly combined to obtain coated graphene fine powder. The obtained coated graphene fine powder is blended with matrix resin, flame retardant, and stabilizer, and extruded, granulated, cooled and dried to obtain desired product.