An Ultrahigh‑Strength Braided Smart Yarn for Wearable Individual Sensing and Protection  

作　　者：Kai Wang Yunchu Shen Tairan Wang Zixin Li Baoping Zheng Zhijia Dong Fanggang Ning Gaoming Jiang Gang Zhao Chaoyu Chen Pibo Ma 

机构地区：[1]Engineering Research Center of Knitting Technology,Ministry of Education,College of Textile Science and Engineering,Jiangnan University,Wuxi 214122,China [2]Industrial Research Institute of Nonwovens and Technical Textiles,College of Textiles and Clothing,Qingdao University,Shandong 266075,People’s Republic of China [3]Department of Hand Surgery,Wuxi 9th People’s Hospital Affiliated to Soochow University,Wuxi 214062,China

出　　处：《Advanced Fiber Materials》2024年第3期786-797,共12页先进纤维材料（英文）

基　　金：the financial support from the National Science Funds of China(52373058,11972172,52303055);the fellowship of China Postdoctoral Science Foundation 2022TQ0123;the Natural Science Foundation of Jiangsu Province BK20221094;the Key Science Research Project of Wuxi Municipal Bureau of Health Z202219。

摘　　要：The insufficient comprehensive mechanical properties and inadequate flexibility of wearable sensors limit their bodyprotection capability,durability,and comfort.There are challenges in using flexible wearable devices for high-performance practical applications,especially on large scales.Here,an ultrahigh-strength ultra-high-molecular-weight polyethylene braided smart yarn(UBSY)has been designed and mass produced.It is based on triboelectric nanogenerators and prepared by combining commercial ultra-high-molecular-weight polyethylene yarn and conductive yarn with a cored biaxial braided structure.Structural parameters,including the ultra-high-molecular-weight polyethylene yarn diameter,twist,and braiding pitch,are optimized to balance the mechanical properties and electrical outputs.The prepared UBSYs are characterized based on a range of reliable properties,including ultrahigh tensile strength(194.83 N),excellent abrasive resistance(up to 306 abrasive cycles),great hydrophobicity(water contact angle of 115.49°),acid and alkali splash resistance,and decent triboelectric outputs(1.5 V,3.0 nA,and 0.5 nC).An intelligent weft-knitted textile wearable sensor is fabricated with UBSY using a matured flat-knitting technique,which provides excellent mechanical strength,physical protection and comfort.Furthermore,a pair of smart elbow guards have been demonstrated to highlight UBSY-based wearable sensors’potential in outdoor sports management.In addition,equipped with a satisfactory body protective capacity against various risks and matured preparation technologies,the UBSY-based wearable sensor provides a practical solution for large-scale applications of high-performance motion sensing in complex environments.

关 键 词：Braided smart yarn Wearable sensor Outdoor sports management High performance Triboelectric nanogenerator 

分 类 号：O15[理学—数学]