Open AccessFunctional Fabric with Strain Sensing Based on Foam Finishing
Author(s) -
Weidong Jiang,
Jianhua Ran,
Qi Zeng,
Hui Liang Shen,
Haiyan Li,
Sheng Bi,
Shiwei Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/697/1/012020
Subject(s) - polyurethane , materials science , composite material , carbon nanotube , electrical conductor , aqueous solution , adhesive , core (optical fiber) , layer (electronics) , electrical resistivity and conductivity , tensile strain , ultimate tensile strength , strain (injury) , aqueous medium , chemistry , medicine , electrical engineering , engineering
Strain sensing is one of the core parts of smart fabric which can be expressed by electrical signals affected by external forces. In this paper, the strain sensing functional fabric was prepared by using the acidified carbon nanotubes (a-CNTs) as the conductive layer and the waterborne polyurethane (WPU) as the adhesive based on foam finishing method. The results showed that many hydroxyl and carboxyl groups were introduced into the surface of CNTs through acidification, which improved their dispersibility in aqueous solution. The blended film of a-CNTs and anionic WPU had excellent conductive properties. When the ratio of a-CNT to WPU was 9:1, the fabric had the smallest resistivity, about 0.13 Ω⋅m, and the corresponding tensile sensing sensitivity up to 55.2.