An ultrafast self-healing polydimethylsiloxane elastomer with persistent sealing performance

A novel polydimethylsiloxane elastomer obtained by crosslinking a long chain of poly(dimethylsiloxane) with tetra-functional biphenyl via an aldimine polycondensation reaction, exhibits ultrafast self-healing capability and persistent sealing performance (can completely self-heal punctured holes or scratches in seconds and therefore maintain its excellent sealing property).