Engineering foam skeletons with multilayered graphene oxide coatings for enhanced energy dissipation

Hierarchical network structural composites for extraordinary energy dissipation inspired by the cat paw

“…The nano-ink solution (20 wt%) was mixed with GO and MWCNTs (7:3), subjected to an ultrasonication at 50 W for 30 min and stirred for 12 h. A 0.4 wt% CaCl2 solution was added into the ink to form the chemical Ca-O bonds between GO and MWCNTs. Modified PUCO foams coated with strong GO/MWCNTs mixture were fabricated based on the pristine PU foam templates by repeating our developed "dipcoating" process five times [28]. PUCO foams treated with O2 plasma were immediately immersed into the ink with the assistance of vacuum and the PUCOI foams containing main network skeletons and secondary membranes were obtained after freeze-drying.…”

“…The microstructure of this composite has features similar to the adipose masses confined by the multiscale fiber networks that contribute to the energy absorption and buffering capability of cat paws. This type of hierarchical structure here is realized by combining together fabrication techniques like dip-coating [28], freeze-drying [29] and flow-filling [18]. As shown in Fig.…”

Improving the damping properties of carbon fiber reinforced polymer composites by interfacial sliding of oriented multilayer graphene oxide

“…Those authors found that the wrinkles play an important role in energy dissipation caused by the inner interfacial slips of GO nanoplates. Moreover, they fabricated PU foam skeletons with multi-layer sandwich GO coatings [21]. The stickslip sliding of GO/PU and a combination of GO interfacial sliding and the PU intrinsic damping capacities have a synergistic effect on damping enhancement.…”

Effect of Four Groups of GO-CF/EP Composites with Ideal Infiltration Structure and Different Layering Ways on Damping Properties

“…They found that the wrinkles play an important role in energy dissipation caused by the inner interfacial slips of GNP. Moreover, they fabricated PU foam skeletons with multilayer sandwich GO coatings [16]. The stick-slip sliding of GO/PU and a combination of GO interfacial sliding and the PU intrinsic damping capacities had a synergistic effect on damping enhancement.…”