A conductive rubber with self‐healing ability enabled by metal‐ligand coordination
Jianxiang Xiong, Zhou Gong, Jianping Ding, Yukun Chen
Abstract
Abstract At present, flexible conductive materials have been widely noticed. However, developing electronic materials with both good mechanical and electrical self‐healing abilities remains both a great challenge and an exciting goal. Herein, we prepared a commercial nitrile butadiene rubber (NBR) with electrical healing capability based on constructing Fe(III) coordination and CNT networks. With 3 phr (parts per hundreds of rubber) CNT, the tensile strength and the elongation at break of rubber composite reached 1.1 MPa and 300%, respectively. After healing at 80°C for 9 hours, the recovery efficiency of rubber composite achieved 90%. After adding 5 phr CNT, the conductivity can reach 0.077 S/m, and the electrical conductivity was 0.076 S/m after self‐healing. Such material can maintain resistance change within 5 times at high strain (100%), so it is applicable in the field of strain sensor.