Design, fabrication and property investigation of cement/polymer based 1–3 connectivity piezo-damping composites

Ultra‐Damping Composites Enhanced by Yolk–Shell Piezoelectric Damping Mechanism

“…[15,16] Compared with conventional damping polymers, the piezo-damping ones could rapidly transfer mechanical energy into electric energy and then dissipate it into heat via conductive path, thus exhibiting superior damping behavior with less dependence on frequency and temperature. [17,18] As depicted in Figure 1a, the high-performance damping composites constitute yolk-shell BaTiO 3 @SiO 2 composite particles as piezoelectrical fillers and carbon nanotubes as conductive network, whose mechanical energy dissipation mechanism of composite damping materials were extended, including resin molecular chain friction, interface friction between resin and fillers and rapid mechanic-electric-heat energy conversion approach based on the piezoelectric effect. [19] To demonstrate the enhancement effect of yolk-shell particles and CNT network, the yolk-shell BaTiO 3 @SiO 2 particles with diameters of 700 and 400 nm were obtained and denoted as YS700 and YS400, whose morphology is shown in Figure S2 (Supporting Information).…”