Enhanced vibration damping of carbon fibers-ZnO nanorods hybrid composites

Abstract

A. Alipour; Masghouni, N.; Case, S. W.; et al., "Enhanced vibration damping of carbon fibers-ZnO nanorods hybrid composites," Appl. Phys. Lett. 101, 073111 (2012); http:// dx

Mechanical and Electrical Characterization of Entangled Networks of Carbon Nanofibers

“…The two main instances of this type of material are carbon nanotubes and carbon nanofibers. Carbon micro- and nanofibers are a common component in high-strength, lightweight fiber-reinforced composites [6,7,8,9]. Less studied are the properties of an interwoven assemblage of the nanofibers, which behaves as a coherent, nonwoven component.…”

Mechanical and Electrical Characterization of Carbon Fiber/Bucky Paper/Zinc Oxide Hybrid Composites

“…As evidenced by the results in Table 3, a composite that incorporates Bucky paper and ZnO nanorods attained the highest increase in tan (δ); an increase by 86%, followed by the composite that contains carbon fiber and Bucky paper (73% increase) and a composite with ZnO grown over the carbon fiber with Bucky paper in between the layers (23% increase). The mechanism responsible for the enhancement in damping can be the frictional slippage between the nanofillers and the epoxy matrix [9,55]. The outstanding energy dissipation through surface friction for the hybrid composite samples is due to the high surface area introduced by the high aspect ratio of the nanotubes and the nanowires into the CFRPs structure.…”

“…It was found that, unlike RF magnetron sputtering, the dip coating technique results in larger size distribution and surface roughness of the seed layer. In addition, the ZnO nanorods aligned perfectly normally to the substrate with uniform length in the sputtering method proving that this method has a clear advantage [9]. However, this method is expensive and unscalable for large composite structures.…”

“…The strength, elastic modulus and the fracture properties of CNTs are orders of magnitudes higher than common structural composites [8]. To exploit the remarkable properties of incorporating CNTs into CFRPs, hybrid carbon fiber/CNT reinforced polymer composites were developed [9]. However, the improper dispersion of CNTs in the matrix and their deagglomeration posed significant problems yet to be resolved.…”

“…Ehlert et al [44] utilized identical ZnO growth process on aramid fiber and suggested that the carboxylic acid group is responsible for the good interfacial shear strength between the ZnO nanorods and the carbon fiber. More recently, Skandani et al [9], reported 50% enhancement in the CFRPs loss modulus upon growing ZnO nanorods on the interface using RF magnetron sputtering for catalyst deposition. This improvement was attributed to the amplified interfacial area between the NWs and the epoxy matrix.…”