摘要
为解决现有智能可穿戴器件导电性及耐久性差、功能应用单一、无法很好满足智能可穿戴系统对相关设备的需求等问题,以聚氨酯为基体,石墨烯和碳纳米管为导电材料,利用湿法纺丝工艺制备了3种三轴导电纤维。通过形貌表征和性能测试对其传感性能进行研究,并对3种导电纤维在实际场景中的应用情况进行测试。结果表明:由于芯层和外层聚氨酯的支撑保护作用,3种导电纤维不仅具有高灵敏度(最大为249)和高拉伸性(600%),而且具有很好的耐久性;同频率和同弯曲深度下石墨烯导电纤维最为灵敏,输出电信号最大,证明其传感性能最好;3种导电纤维在超过1000次的拉伸循环后仍能稳定输出电信号,且在跟随关节运动产生拉伸与回复的过程中,能够稳定监测不同部位的运动幅度及产生的电信号,表明其作为柔性可穿戴传感器具有很好的应用前景。
To address the issues encountered in existing smart wearable devices,such as poor conductivity,lack of durability,limited functional applications,and an inability to fully meet the requirements of smart wearable systems,this study employed a wet spinning technique to fabricate triaxial conductive fibers using polyurethane as the matrix and graphene and carbon nanotubes as conductive materials.The sensing performance of these fibers was investigated through morphological characterization and performance testing,and their application in real-world scenarios was assessed.The experimental results demonstrated that the core and outer layers of polyurethane provide support and protection,endowing the three types of conductive fibers with high sensitivity(up to 249),excellent stretchability(600%),and robust durability.Among them,graphene-based conductive fibers exhibited the highest sensitivity and generated the largest electrical signal under the same frequency and bending depth,indicating superior sensing performance.All three types of conductive fibers were able to stably output electrical signals after undergoing more than 1000 stretching cycles and could reliably monitor the amplitude of movement and the generated electrical signals in different body parts during the stretching and recovery processes associated with joint movements.These findings suggest that these fibers have promising applications as flexible wearable sensors.
作者
樊威
吴佳佳
董玉琬
杨杰
吴帆
苗亚萍
FAN Wei;WU Jiajia;DONG Yuwan;YANG Jie;WU Fan;MIAO Yaping(School of Textile Science and Engineering,Xi’an Polytechnic University,Xi’an 710048,China)
出处
《纺织高校基础科学学报》
CAS
2024年第4期29-38,共10页
Basic Sciences Journal of Textile Universities
基金
国家自然科学基金面上项目(52073224)
中国纺织工业联合会应用基础研究项目(J202110)
陕西省重点研发计划项目(2023-YBGY-487)。
关键词
柔性导电纤维
三轴结构
石墨烯
碳纳米管
多功能传感器
flexible conductive fibers
triaxial structure
graphene
carbon nanotubes
multifunctional sensor
