Fig. 4

The energy absorbing properties of Zn(Hbimcp)2-PDMS polymer. a The calculation of energy absorbing efficiency. b Normalized stress–relaxation curves under different strain. c Cyclic strain–stress curves of blank sponge and composite sponge. d Cyclic strain–stress curves of composite sponge with healing process. e Optical images of the composite sponge under compression, healing, and recovery processes