▎ 摘　　要

NOVELTY - Method for preparing a stretchable sensor involves (a) electrospinning polymer solution to prepare an oriented polymer fiber membrane, (b) cutting the polymer fiber membrane obtained in step (a) into strip-shaped fiber bundles, and adding conductive material dispersion after fixing, casting and spreading the conductive material dispersion on the fiber bundle, and twisting to obtain a twisted fiber bundle, (c) adding the twisted fiber bundle obtained in step (b) to the conductive material dispersion, and twisting to obtain a composite conductive spiral fiber bundle, conducting an environmental stability experiment on the composite conductive spiral fiber bundle, and (d) packaging the composite conductive spiral fiber bundle that has passed the environmental stability experiment in polydimethylsiloxane (PDMS) and fixed with conductive silver paste to obtain a stretchable sensor. USE - The method is used for preparing a stretchable sensor. ADVANTAGE - The method produces flexible and stretchable sensor in lightweight, has high-strength, has superior electrical conductivity and sensing performance, and has high strength and high stretchability, and realizes real-time monitoring of human movement. DETAILED DESCRIPTION - Method for preparing a stretchable sensor involves (a) electrospinning polymer solution to prepare an oriented polymer fiber membrane, (b) cutting the polymer fiber membrane obtained in step (a) into strip-shaped fiber bundles, and adding conductive material dispersion after fixing, casting and spreading the conductive material dispersion on the fiber bundle, and twisting to obtain a twisted fiber bundle, (c) adding the twisted fiber bundle obtained in step (b) to the conductive material dispersion, and twisting to obtain a composite conductive spiral fiber bundle, conducting an environmental stability experiment on the composite conductive spiral fiber bundle, and (d) packaging the composite conductive spiral fiber bundle that has passed the environmental stability experiment in polydimethylsiloxane (PDMS) and fixed with conductive silver paste to obtain a stretchable sensor, where the polymer is a spinnable material, polyvinylidene fluoride (PVDF), poly(vinylidene fluoride-co-hexafluoropropylene) PVDFHFP, polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE), polyacrylonitrile (PAN), polycaprolactone (PCL), PA66, and cellulose, and the conductive materials are MXene, polypyrrole (Ppy), polyaniline (PANI), poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT: PSS), graphene oxide, carbon nanotubes (CNT), silver nanowires, silver nanoflowers, gold nanoparticles, graphyne, and/or molybdenum disulfide.