Preparation of Flexible Electronic Conductive Elastomers by Constructing Energy Dissipation Mechanism through Multiple Hydrogen-Bonding Strategies

The current elastomers use weak cross-linking to ensure flexibility, resulting in poor strength and tear resistance. Therefore, this article presents a self-healing composite elastomer based on a polymerizable deep eutectic solvent (PDES) through constructing a double hydrogen bond network. We used acrylic acid and choline chloride DES (AA-ChCl DES) as the precursor system of polymer, Inositol (INO) as a hydrogen bond supplement, and 1-vinylimidazole (VIM) as a rigid reinforcement to fill the cross-linked network of the elastomer, successfully conducting an elastomer with excellent performance. We named it the ACVI elastomer. Compared with traditional organic solvents, using low-melting-point solvents as substrates can greatly reduce the toxicity of the product. This product has a fracture strain over 300% and a fracture stress of up to 1.12 MPa. The finite element method was used to simulate uniaxial tensile fracture, providing a more accurate basis for the dynamic analysis of ACVI. Meanwhile, the product has UV transmittance over 80% and conductivity of 0.52 S/m, excellent weather resistance at −5 to 100 °C, and efficient self-healing ability. The self-healing efficiency of 18 h can reach over 63% and has a high sensitivity coefficient (Gauge Factor ≈ 1.48). So, it has broad application prospects in fields such as human health monitoring, wearable electronic devices, biomedicine, and soft robots.