▎ 摘　　要

NOVELTY - Preparing elastic yarn with electromagnetic shielding function with negative Poisson's ratio effect comprises (i) coating the conductive particle solution on the surface of the low modulus fiber, and then spirally wrapping the high modulus fiber on the surface of the low modulus fiber, where, the low modulus fiber has conductivity, (ii) sending the complex fiber into the texturing machine, holding the two ends of the complex fiber when passing through the false twisting disc (13), and false twisting in the middle, and (iii) performing hot-press drafting on the twisted yarn to obtain the elastic yarn with electromagnetic shielding function having a negative Poisson's ratio effect. USE - The method is useful for preparing elastic yarn with electromagnetic shielding function with negative Poisson's ratio effect. ADVANTAGE - The electromagnetic shielding yarn has excellent mechanical properties e.g. impact resistance, fracture resistance and toughness, the prepared conductive swelling complex material has good application prospects in the fields of stretchable electromagnetic shielding materials and wave-absorbing materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for elastic yarn with electromagnetic shielding function with negative Poisson's ratio effect prepared by above-mentioned method. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic flow chart of electromagnetic shielding yarn. (Drawing includes non-English language text). 1Main yarn station 2First guide unit 3First drafting device 4First roller roller 5First nozzle 6Auxiliary yarn station 7Second guide unit 8Second drafting device 9Second roller 10Second nozzle 11Spinning unit 12Driven roller 13False twisting disc 14Heating drafting roller 141First drafting roller 142Second drafting roller 143Third drafting roller