▎ 摘　　要

NOVELTY - Graphene self-limiting temperature heating wire comprises 40-65 wt.% high density polyethylene, 20-50 wt.% polypropylene, 1-5 wt.% nano nickel powder, 5-15 wt.% carbon nanotubes, 0.2-0.5 wt.% graphene, 5-20 wt.% nano conductive carbon black powder and 5-7 wt.% PTC reinforcing agent. USE - Used as graphene self-limiting temperature heating wire. ADVANTAGE - The wire: has good conductivity and thermal conductivity; and is able to release far infrared rays. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the graphene self-limiting temperature heating wire, comprising (i) selecting the raw materials, and using high-precision mixer, fully stirring and mixing, (ii) drying the fully mixed raw materials, placing the dried raw materials into the material box of the wire extruder, and where the wire extruder extrudes the heating wire, (iii) extruding and automatic winding, wind-cooling the extruded heating wire and then wounding, and(iv) packing in plastic bags, and evacuating the air in the plastic bags and sealing by an air extractor.