▎ 摘　　要

NOVELTY - Manufacture of a conductive yarn involves melt-spinning a base resin and a conductive polymer material to form a sheath-core shape containing a core portion located in the center and a sheath portion surrounding the outer surface of the core portion in the form of a tube. The core portion is made of the base resin. The sheath portion is made of the conductive polymer material, a thermoplastic elastomer, graphene and silver nanomaterial. The base resin is heated and melted in the form of pellets to prepare base pellets, and 100 pts. wt. thermoplastic elastomer (TPE), 1-30 pts. wt. conductive polymer material, 0.01-2 pts. wt. graphene and 0.01-10 pts. wt. silver nanomaterial are heated and melted to form conductive pellets. A melt-spinning machine contains a base pellet supply unit for melting and supplying the base pellets, a conductive pellet supply unit for melting and supplying the conductive pellets, and a base pellet spinning nozzle. USE - Manufacture of conductive yarn for weaving fabric. Uses include but are not limited to antistatic work clothes and gloves for semiconductor manufacturing plants, camouflage films for military applications, winter underwear, winter socks, sportswear and mountaineering clothes. ADVANTAGE - The method provides yarn having excellent conductivity and durability due to the action of graphene, antibacterial properties due to the action of silver nanomaterial, and provides fabric having excellent smoothness. The yarn maintains conductivity completely during the process of weaving the fabric or forming the clothes made of the fabric. DETAILED DESCRIPTION - Manufacture of a conductive yarn involves melt-spinning a base resin and a conductive polymer material to form a sheath-core shape containing a core portion located in the center and a sheath portion surrounding the outer surface of the core portion in the form of a tube. The core portion is made of the base resin. The sheath portion is made of the conductive polymer material, a thermoplastic elastomer, graphene and silver nanomaterial. The base resin is heated and melted in the form of pellets to prepare base pellets, and 100 pts. wt. thermoplastic elastomer (TPE), 1-30 pts. wt. conductive polymer material, 0.01-2 pts. wt. graphene and 0.01-10 pts. wt. silver nanomaterial are heated and melted to form conductive pellets. A melt-spinning machine contains a base pellet supply unit for melting and supplying the base pellets, a conductive pellet supply unit for melting and supplying the conductive pellets, and a base pellet spinning nozzle provided in contact with the base pellet supply unit for radiating the base pellets. The base pellets and the conductive pellets are injected into the melt spinning machine in contact with the end of the supply unit and is installed to surround the outside of the base pellet spinning nozzle and a conductive pellet spinning nozzle for emitting the conductive pellets. The melt spinning machine is operated to manufacture a semi-finished product comprising a core portion made of the base pellets and a sheath portion made of the conductive pellets. The sheath portion is wrapped around the outer surface of the core portion in a tube shape by melt-spinning each other in a sheath-core form. The prepared semi-finished conductive yarn is added into a stretching machine to stretch in a longitudinal direction to strengthen physical properties. The base resin contains a nylon resin or a polyester resin. The conductive polymer material contains polyaniline, polypyrrole or polythiophene.