纺织高校基础科学学报2025，Vol.38Issue(2)：41-49,9.DOI:10.13338/j.issn.1006-8341.2025.02.005
LM@CNT/WPU电阻应变传感纤维的制备及性能
Preparation and properties of LM@CNT/WPU resistive strain sensing fibers
摘要
Abstract
In order to reduce the surface tension of gallium-based liquid metal and increase the affinity and stability of bonding with other substrates,gallium-based liquid metal(LM)and carbon nano-tubes(CNT)were used to prepare LM@CNT ink with good affinity as a conductive material,and waterborne polyurethane(WPU)was used as an elastic fiber substrate,and LM@CNT/WPU resis-tive strain sensing fibers were prepared by wet spinning process.The morphology and structure of the fibers were characterized,and their mechanical and tensile strain sensing properties were tested.The results show that the complexation of carboxyl functional group on the surface of CNT with Ga3+of LM effectively improves the surface tension and wettability of LM to the elastic matrix,which can make LM uniformly distributed in the interior and surface of the fiber,and endows the fibers with the characteristics of high sensitivity,fast response,stability,and durability.In terms of mechanical properties,the Young's modulus of the fibers is 21.23 MPa,and the elongation at break is 557％,exhibiting good mechanical properties and elongation.In terms of sensing,the sen-sitivity of the fibers in the range of 0～80％ strain GF can reach 2.13.When the strain exceeds 80％,the sensitivity increases to 3.78,and as the strain increases,the sensitivity of the fiber increases.After 1 000 cycles of stretch-recovery test,the conductive sensing fiber shows excellent resistance signal stability,which has great potential in human-computer interaction,human motion monito-ring and other application areas.关键词
液态金属/碳纳米管/水性聚氨酯/湿法纺丝/传感纤维Key words
liquid metals/carbon nanotubes/waterborne polyurethane/wet spinning/sensing fibers分类
轻工业引用本文复制引用
于郭鑫,邓晶,张亚娟,胡婉宁,范大程,王蕊宁..LM@CNT/WPU电阻应变传感纤维的制备及性能[J].纺织高校基础科学学报,2025,38(2):41-49,9.基金项目
陕西省大学生创新创业训练计划项目(S202310709108) （S202310709108）
