CPE (Chlorinated Polyethylene)/POE (Polyolefin Elastomer)/LDPE (Low-Density Polyethylene) component type insulating rubber and preparation method thereof

The invention relates to a CPE (Chlorinated Polyethylene)/POE (Polyolefin Elastomer)/LDPE (Low-Density Polyethylene) component type insulating rubber and a preparation method thereof. The insulating rubber mainly comprises the following components: 50-70 parts by weight of CPE, 20-40 parts by weight of POE, 15-35 parts by weight of LDPE, 80-100 parts by weight of talcum powder, 10-30 parts by weight of light calcium carbonate, 55-80 parts by weight of heavy calcium carbonate, 5-15 parts by weight of paraffin base crude oil, 5-10 parts by weight of cross-linking agents and 2-8 parts by weight of cross-linking assistants. The insulating rubber is prepared by dynamic vulcanization, extrusion and granulation through a double-screw extruder.