▎ 摘　　要

NOVELTY - Three-layer co-extrusion self-cross-linking flame-retardant insulating data transmission cable comprises a cable core (1), flame-retardant insulating layer (2), shielding layer (3) and outer sheath layer (4) which are orderly arranged from inside to outside, the cable core comprises multiple pairs of twisted core, each group of the pair of twisted wire cores is formed by twisting two insulating single wires, each insulating single wire comprises a conductor (11) and a three-layer co-extrusion flame-retardant insulating layer (12) which are orderly arranged from inside to outside, the three-layer co-extrusion flame-retardant insulating layer from inside to outside in turn comprises self-crosslinking type polyolefin insulating layer (121), self-crosslinking type foaming insulating layer (122) and a self-crosslinking halogen-free low-smoke flame-retardant polyolefin insulating layer. USE - Three-layer co-extrusion self-cross-linking flame-retardant insulating data transmission cable. ADVANTAGE - The cable greatly reduces the attenuation of the cable and reduces the cable heat release amount. DESCRIPTION OF DRAWING(S) - The drawing shows a structure schematic view of a cable. Cable core (1) Flame-retardant insulating layer (2) Shielding layer (3) Outer sheath layer (4) Conductor (11) Three-layer co-extrusion fire-retardant insulating layer (12) Self-crosslinking polyolefin insulating layer (121) Self-crosslinking foaming insulating layer (122)