文献类型：期刊文献

中文题名：基于静电纺纤维包芯纱的电容式扭转传感器构建及其传感性能

英文题名：Construction and sensing performance of capacitive torsion sensor made from electrospinning fiber core-spun yarn

作者：范梦晶[1];岳欣琰[1];邵剑波[1];陈雨[1];洪剑寒[1,2,3];韩潇[1,2,3]

机构：[1]绍兴文理学院纺织科学与工程学院,浙江绍兴312000;[2]浙江省清洁染整技术研究重点实验室,浙江绍兴312000;[3]绍兴文理学院纤维基复合材料国家工程研究中心绍兴分中心,浙江绍兴312000

年份：2025

卷号：46

期号：2

起止页码：106

中文期刊名：纺织学报

外文期刊名：Journal of Textile Research

收录：北大核心2023、、EI(收录号：20251118025347)、北大核心

基金：浙江省自然科学基金探索公益项目(LTGY24E030001);国家级大学生创新创业训练计划项目(202310349025)。

语种：中文

中文关键词：静电纺丝;静电纺纤维包芯纱;电容;扭转传感器;传感性能

外文关键词：electrospinning;electrospinning fiber cored yarn;capacitance;torsion sensor;sensing performance

中文摘要：为拓展柔性传感器的研发思路,开发出高质量的柔性电容式扭转器件,采用水浴静电纺丝法制备以镀银锦纶(SCN)为芯纱,聚丙烯腈(PAN)为包覆层的静电纺纤维包芯纱(EFCY),利用EFCY构建电容式扭转传感器,分析了纱线的性能,探讨了扭转传感器的传感原理与性能。结果表明:静电纺纤维在SCN芯纱表面包覆完整且均匀,直径分布较为均匀,结构疏松多孔,力学性能较芯纱有所提升;扭转传感器的电容值随着捻度的增大而增大,极限捻度可达13捻/cm左右;速度变化会使传感器电容稍有变化但影响不显著;在加捻—解捻—反向加捻—解捻循环测试中,传感器显示出较优异的重复稳定性。该传感器在扭转监测用柔性电子领域初步具备优良的应用条件。

外文摘要：Objective With the rapid development of micro-electromechanical systems,torsion sensor has been widely used for effectively monitoring mechanical behavior in complex environments.The current torsion sensor is not satisfactory because of its rigidity,structural complexity and high price.Therefore,in order to meet different requirements and further expand its application space,a capacitive torsion sensor based on electrospinning fiber core-spun yarn(EFCY)with excellent flexibility and transduction properties was proposed.Method A four-needle water bath electrospinning method was used to prepare the EFCY with silver coated nylon(SCN)as the core,and polyacrylonitrile(PAN)electrospinning fiber as the sheath.The EFCY was prepared using the following electrospinning conditions:the mass fraction of the spinning solution was 12%,the spinning rate was 0.36 mL/h,the voltage was 18 kV,the drawing distance was 100 mm,the winding rate was 33 cm/min,and 4 needles were arranged in a straight line above the core yarn.The performance of the EFCY was analyzed,and a capacitive torsion sensors was constructed by using two EFCYs(Sensor 1#with the initial distance between the two EFCYs was 0 mm and Sensor 2#with the initial distance between the two EFCYs was 4 mm)with the SCN as electrode and.The effects of the initial distance and twisting speed on the capacitance of the sensors were discussed,and its repeatability was tested.Results The coating layer of EFCY was complete in structure and uniform in thickness(about 21.4μm).The average diameter of the electrospinning PAN fibers was about 249.60 nm.Compared with SCN,the mechanical properties of EFCY were improved to some extent.The torsion sensor shows good sensing performance.When the initial distance between the two EFCYs in the sensor increases from 0 mm(Sensor 1#)to 4 mm(Sensor 2#),the initial capacitance of the sensor decreases from 7.28 pF to 2.63 pF.With the increase of twist,the capacitance of the two sensors showed a trend of gradual increase.When the twist of the two sensors exceeds 4 twist/cm,the capacitance changes tend to be consistent.When the twist reached 13-14 twist/cm,the electrospinning fiber coating layer would be destroyed under the action of extrusion pressure and friction,thus damaging the sensor structure and making it ineffective.In the range of 60-160 r/min,continuous twist-untwist-reverse twist-untwist cycle tests were carried out on the sensor at 6 different speeds.The results showed that the maximum value of C p/C 0(real-time capacitance/initial capacitance)increased significantly after 2-3 cycles at the speed of 60 r/min,showing initial instability.Subsequently,under different speeds,the maximum value of C p/C 0 is basically stable at about 3.4,which is almost not affected by the increase of speed.A cycle test of about 7000 s at a speed of 160 r/min and a maximum twist of 5 twist/cm showed that the sensor maintained high sensing stability after the first few cycles.Conclusion EFCY with SCN as core yarn and PAN electrospinning fiber as coating layer was prepared by four-needle water bath electrospinning method,and the capacitive torsion sensor was constructed based on EFCYs.The properties of yarn are analyzed,and the sensing principle and properties of torsion sensor are discussed.The results show that the surface of SCN core yarn is covered by electrospinning fiber coating layer completely and uniformly,which can provide an ideal dielectric layer for the sensor.The capacitance value of torsion sensor increases with the increase of twist,and the limit twist can reach about 13 twist/cm.Under different test conditions,the sensor shows excellent repeatability.The sensor has an excellent application prospect in the field of flexible electronics for torsion monitoring.