A High Stretchable and Self–Healing Silicone Rubber with Double Reversible Bonds

Abstract It is a challenge to synthesize silicone rubber with high stretchability and rapid self–healing ability without external stimuli. This article reports on a new class of self–healing poly(dimethylsiloxane)(PDMS) elastomer fabricated by introducing double reversible bonds (imine and hydrogen bonds) into silicone chains. Through reasonable structural design, the silicone rubber with high‐efficiency self‐healing ability was produced. The as–prepared PDMS elastomer films exhibited high stretchability (>4000%), good transparency (>80%) and fast self–healing efficiency (3 h at room temperature a healing efficiency of 93%). It could also be healed at low temperature (‐20 °C) and processed cyclically. In addition, we combined carbon nanotube films with this elastomer to prepare a flexible and stretchable capacitive sensor through a simple process.