柔性可穿戴电子器件对人体运动、健康等的实时监测受到了广泛关注。为开发聚酰胺长丝/氨纶混合纱线材料的应变传感器，以氨纶为芯、聚酰胺长丝为皮层，利用捻度仪制备了不同聚酰胺长丝/氨纶包覆纱。通过化学镀银和涂覆炭黑的工艺方法，获得了导电聚酰胺长丝/氨纶包覆纱。实验得到，捻度50 T/10 cm导电包覆纱的线性电阻为1.97 Ω/cm；在20%应变时，该导电包覆纱拉伸-回复循环20 次的电阻变化比率（ΔR/R0）稳定且重复稳定性误差较小，其作为应变传感器可以较好地传感人体手指弯曲、手腕弯曲运动信号。
As a real- time monitoring of human body movement and health, flexible wearable electronic devices have attracted wide attention. In order to develop the strain sensors of polyamide filaments/spandex yarn, polyamide filaments/spandex covered yarn was manufactured by a twister using spandex as core and polyamide filaments as sheath. Conductive polyamide/spandex covered yarn was made by chemical silver-plate and carbon black coating. Experiment results show that the linear resistance of the conductive covered yarn with twist 50 T/10 cm is 1.97 /cm. The resistance change ratio of the conductive yarn with twist 50 T/10 cm is stable and the repetitive stability error is smaller after 20 stretching-recovery cycles. As a strain sensor, the conductive yarn with twist 50 T/10 cm could better sense the motion signals of finger bending and wrist bending.
林思伶,李 龙,王军庆,吴 磊.导电聚酰胺/氨纶包覆纱的应变传感性能[J].高分子材料科学与工程,2022,38(7):143-148.复制