Piezoelectric textiles have earned widespread acceptance in the application of wearable sensors owing to the stabilized energy conversion properties, high sensitivities and steady mechanical properties. In this study, silver‐coated nylon yarns are used as a core with poly(vinylidene fluoride) nanofibers as a wrap material, forming piezoelectric wrapped yarns. The effect of spinning process parameters on the structure and crystallinity of the piezoelectric yarn is investigated through studying the mechanical properties, β‐phase ratio, crystallinity and piezoelectric properties. The results indicate that the crystallinity of the wrapped yarn reaches 49.57% in this experiment, and when used for piezoelectricity, the piezoelectric voltage constant can reach up to 0.4323 mV m N⁻¹. The wrapped yarns possess good softness and structural advantages of the sensing layer and thus show a great variety of application potential, such as in wearable and flexible sensors. © 2021 Society of Chemical Industry

中文翻译：

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通过创新的纱线静电纺丝技术增强聚偏氟乙烯纳米包裹纱线的压电性

压电纺织品由于其稳定的能量转换性能，高灵敏度和稳定的机械性能而在可穿戴传感器的应用中获得了广泛的接受。在这项研究中，镀银尼龙纱被用作芯，聚偏二氟乙烯纳米纤维作为包裹材料，形成了压电包裹纱。通过研究机械性能，β相比，结晶度和压电性能，研究了纺丝工艺参数对压电纱结构和结晶度的影响。结果表明，在本实验中，包缠纱的结晶度达到49.57％，用于压电时，压电电压常数可达0.4323 mV m N ^-1。。包裹的纱线具有良好的柔软度和传感层的结构优势，因此显示出各种应用潜力，例如在可穿戴和柔性传感器中。©2021化工协会