▎ 摘　　要

NOVELTY - Preparing multi-layer structure composite yarn with both strain sensing and tensile resistance stability, comprises stretching and covering the yarn with conductive material and Spandex (Synthetic fiber) as the core yarn to form a wrinkled structure to obtain Spandex (Synthetic fiber)/pleated yarn, dissolving the polyurethane particles in the dimethylformamide solution, and uniformly mixing to obtain an electrospinning solution, electrospinning the electrospinning solution to form a fiber web on the Spandex (Synthetic fiber)/pleated yarn to obtain Spandex (Synthetic fiber)/pleated/polyurethane yarn, covering the Spandex (Synthetic fiber)/fold/polyurethane yarn with nanomaterials, where the nanomaterials are carbon-based nanomaterials and metal nanomaterials, drying, and forming the Spandex (Synthetic fiber)/pleated/polyurethane/carbon-based nanomaterial/metal nanomaterial yarn into a fiber web through the electrospinning solution. USE - Preparing multi-layer structure composite yarn with both strain sensing and tensile resistance stability used in flexible wear-resistant device field. ADVANTAGE - The method provides multi-layer structure composite yarn with strain sensing and stable tensile resistance. The multi-level structure avoids the damage of the human body and the sensor performance caused by the falling of the nanometre material and the oxidation problem, and has good durability and can be woven. The method has simple operation, convenient preparation, low cost, suitable for industrial mass production.