A multiple flame-retardant,early fire-warning,and highly sensitive thread-shaped all-fabric-based piezoresistive sensor  

作　　者：LI WeiBiao ZHANG Shuai MA ShuQi WANG JiaCheng WANG Huan YANG QiRong SONG YongTao ZHU Jie 

机构地区：[1]North China Institute of Aerospace Engineering,Langfang 065000,China [2]Langfang Fire and Rescue Division of Hebei Province,Langfang 065000,China [3]School of Information Science and Engineering,Xinjiang College of Science and Technology,Korla 841000,China

出　　处：《Science China(Technological Sciences)》2024年第4期1151-1159,共9页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.52175554);Young Top Talent Project of the Hebei Provincial Department of Education(Grant No.BJK2023116);the Central Guiding Local Science and Technology Development Fund Project(Grant No.236Z4901G);the Natural Science Foundation of Hebei Province(Grant No.F2021409007);the School Research Fund Project(Grant No.YKY-2023-34)。

摘　　要：In the artificial intelligence age,multifunctional and intelligent fireproof fabric-based electronics are urgently needed.Herein,a novel thread-shaped all-fabric-based piezoresistive sensor(denoted as TAFPS)with properties such as flame retardancy,firewarning,and piezoresistivity is proposed,which is composed of an inner nickel-plated fabric electrode,a multifunctional double helix fabric,and an external flame-retardant encapsulation fabric.Owing to the multiple flame-retardant properties of glass fiber tubular fabric,aminated carbon nanotubes(ACNTs),and ammonium polyphosphate,the char residue of the TAFPS reaches40.3 wt%at 800℃.In addition,the heat-sensitive effect of ACNTs during combustion causes a rapid decrease in the TAFPS resistance,triggering the fire alarm system within 2 s.Additionally,benefiting from the force-sensitive behavior of the double helix layer and tightly wrapped pattern of the external heat-shrinkable tubular fabric,TAFPS demonstrated a high sensitivity of4.40 kPa^(-1)(0–5.81 k Pa)and good stability for 10000 s.Considering its excellent flame resistance,high sensitivity,and agreeable stability,the developed TAFPS can be integrated into fire suits to monitor the exercise training process and the external fire environment.This work offers a novel approach for fabricating all-fabric-based piezoresistive sensors in the future for fire prevention and fire alarms,with promising applications in fire protection,the Internet of Things,and smart apparel.

关 键 词：all-fabric piezoresistive sensor multiple flame retardancy agile fire-warning high sensitivity 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TS106[自动化与计算机技术—控制科学与工程]