芳纶纳米纤维/碳纳米管复合气凝胶传感器的制备及其性能  

Preparation and performances of aramid nanofiber/carbon nanotube composite aerogel sensor

作　　者：杨光[1] 金钊 闫静[1] YANG Guang;JIN Zhao;YAN Jing(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387

出　　处：《天津工业大学学报》2024年第5期1-7,共7页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(52103267)。

摘　　要：针对导电气凝胶结构稳定性差导致传感性能不佳的问题,提出以去质子化方法制备芳纶纳米纤维(ANFs),并与改性碳纳米管(CNTs)进行共混,得到具有高压缩回弹性、高灵敏度的复合气凝胶传感器,并对其热学性能、力学性能和传感性能进行表征。实验结果表明:ANFs与CNTs之间混合均匀,并通过氢键连接形成了稳定的内部网状结构,气凝胶能承受50%的压缩比,并在100次的压缩循环后,完全恢复到初始状态;更重要的是,复合气凝胶在压缩循环中展现出稳定的电信号输出以及0.1 kPa的超低检测极限,因而在柔性应变传感器领域具有较大的应用潜力。Aiming at the issue of poor structural stability in conductive aerogels that causes unstable sensing pesformance,aramid nanofiber(ANFs)were prepared by deprotonation method and blended with modified carbon nanotubes(CNTs)to obtain a highly sensitive composite conductive aerogel sensor with high compression resilience.Its thermal,mechanical and sensing properties were characterized.The experimental results showed that the ANFs and CNTs were mixed uniformly,forming a stable internal network structure through hydrogen bonding.The aerogel could bear a compression ratio of 50%and completely return to the initial shape after 100 compression cycles.More importantly,the composite aerogel showed stable electrical signals and ultra-low detection limit of 0.1 kPa in the compression cycles,which indicated that it has great application potential in the field of flexible strain sensors.

关 键 词：芳纶纳米纤维 碳纳米管 气凝胶 柔性应变传感器 

分 类 号：TS102.528[轻工技术与工程—纺织工程] TQ342.8[轻工技术与工程—纺织科学与工程]