A highly conductive MXene-based rubber composite with relatively stable conductivity under small deformation and high sensing sensitivity at large strain. (July 2023)

• Record Type: Journal Article
• Authors: Yang, Yunpeng; Kong, Lingli; Lu, Junjie; Lin, Baofeng; Fu, Lihua; Xu, Chuanhui
• Is Part Of: Composites. Volume 170(2023)
• Publication Date: 2023-07
• Subjects: Polymer-matrix composites (PMCs) -- Electrical properties -- Mechanical properties -- Interface; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2023.107545
• Languages: English
• ISSNs: 1359-835X

Abstract

Abstract: Nowadays, flexible conductive materials (FCMs) have made progress in pursuing multi-performance with high conductivity, high sensitivity and stable conductive application in deformation. However, it remains a challenge to design FCMs with relatively stable conductivity under small strain but high sensitivity at large strain. Here, we report a conductive composite based on carboxylic styrene butadiene rubber (XSBR) and Ti3 C2 Tx MXenes using sodium alginate (SA) as dispersing agent. It owns a percolation threshold of 5.11 wt%, high electrical conductivity of 5.99 S/m and high stretchability up to 270%. The composite keeps relatively stable conductivity of no less than 4.11 S/m within 60% strain where its relative resistance change is only 35% while it shows high sensitivity with gauge factor of 11.35 beyond 120% strain. The XSBR/MXene/SA composite can be applied in sensors area which may require relatively stable and high conductivity under small strain and simultaneously could monitor action with large strain.