The present invention relates to the technical field of cable materials, in particular to a high-speed extrusion, anti-casting, high-flame-retardant and high-insulation modified polyvinyl chloride material and a preparation method thereof. The method comprises: uniformly mixing a plasticizer, an azo compound and an ionic liquid in proportion to prepare a modified liquid; uniformly mixing a polymer, calcined clay and a flame retardant in proportion, and adding the modified liquid to prepare a modified resin; adding the modified resin into a twin-screw extruder for melt blending and pelletization to obtain the modified polyvinyl chloride material. The present invention improves the compatibility among internal components of the polyvinyl chloride material through the catalytic action of azobisisobutyronitrile, accelerating the extrusion speed during the production of polyvinyl chloride wires and cables. In addition, the synergistic effect among components endows the polyvinyl chloride material with excellent flame retardancy, and the special calcined clay prevents casting of polyvinyl chloride during processing.
Country Code: CN
Application Number: CN202410854498.1
