Fire-resistant cable and preparation method thereof

Abstract

The invention relates to a fire-resistant cable and a preparation method thereof, and belongs to the technical field of cables. Metallic copper, high-density polyethylene, an ethylene-vinyl acetate copolymer, a plasticizer, an antioxidant and a self-made flame retardant serve as raw materials, the fire-resistant cable is prepared, the metallic copper is firstly heated to be molten and then subjected to heat preservation treatment, then the metallic copper liquid is cooled and cast into wires under the nitrogen protection condition, and the fire-resistant cable is prepared. After the copper wires are subjected to heat preservation toughening treatment, the copper wires are added into water to be quenched and are subjected to normal-temperature wire drawing and stranding to prepare a core material; and finally, uniformly mixing the high-density polyethylene, the ethylene-vinyl acetate copolymer, the plasticizer, the antioxidant and the flame retardant in the raw materials, heating and melting, and extruding and coating the surface of the cable core material with the mixture through a plastic extruding machine to obtain the fire-resistant cable. And the cable protection sleeve wrapped outside has good impact resistance, good heat resistance and flame retardance, and good safety performance.