Room temperature self-healing and recyclable conductive composites for flexible electronic devices based on imine reversible covalent bond

• Published in: Journal of alloys and compounds Vol. 894; p. 162433
• Main Authors: Min, Jinbiao, Zhou, Zhaoxi, Wang, Hainan, Chen, Qihui, Hong, Maochun, Fu, Heqing
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 15-02-2022; Elsevier BV
• Subjects: Carbon black; Carbon nanotubes; Chemical bonds; Composite materials; Covalent bonds; Electrical conductivity; Electrical properties; Electronic devices; Hot pressing; Imine reversible covalent bond; Mechanical properties; Recyclability; Room temperature; Self healing materials; Self-healing; Self-healing mechanism; Self-healing; Imine reversible covalent bond; Electrical conductivity; Recyclability; Self-healing mechanism
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2021.162433

•Room temperature self-healing and recyclable conductive composites based on imine reversible covalent bond.•The composites have excellent room temperature self-healing properties, mechanical strength and the electrical resistivity.•The composites can be recovered by solution recovery and hot pressing.
With the development of flexible electronic devices, various requirements for flexible conductive materials have been put forward to. However, the self-healing, mechanical and conductive properties of the flexible materials are poor. Therefore, it is important to prepare self-healing materials with good mechanical and conductive properties. In this paper, room temperature self-healing and conductive composites based on imine reversible covalent bond were prepare by introducing of the carbon nanotube and carbon black. The self-healing, mechanical and conductive properties of the composites were studied. And the structure of the composites was also characterized. The experimental results showed that the mechanical strength and the electrical resistivity of composites were 6.6 MPa and 108 Ω·m, respectively. The composites have excellent room temperature self-healing properties through the reversible exchange of imine bond, and the healing efficiency of mechanical properties and the electrical properties can reach 96% and 93%, respectively. At the same time, the self-healing mechanism was put forward to. In addition, the composites can be recovered by solution recovery and hot pressing.