In a nanocomposite structure, it is anticipated that high damping can be achieved by taking advantage of the interfaeial friction between the nanotubes and the polymer. The purpose of this paper is to investigate the ...In a nanocomposite structure, it is anticipated that high damping can be achieved by taking advantage of the interfaeial friction between the nanotubes and the polymer. The purpose of this paper is to investigate the structural damping characteristics of polymeric composites containing Carbon nanotubes （CNTs） with various kinds and amounts. The damping characteristics of the specimens with 0 wt% and 0.5 wt% nanotube contents were computed experimentally. Through comparing with neat resin specimens, the study showed that one can enhance damping by adding CNT fillers into polymeric resins. Similarly experiment showed that the maximum value of damping ratio was obtained at 0.5 wt%.展开更多
This paper conducted experimental studies on the damping and mechanical properties of carbon nanotube-nanosilica-cement composite materials with different carbon nanotube contents. The damping and mechanical propertie...This paper conducted experimental studies on the damping and mechanical properties of carbon nanotube-nanosilica-cement composite materials with different carbon nanotube contents. The damping and mechanical properties enhancement mechanisms were analyzed and compared through the porosity structure test, XRD analysis, and scanning electron microscope observation. The results show that the introduction of nanosilica significantly improves the dispersion of carbon nanotubes in the cement matrix. At the same time, the addition of nanosilica not only effectively reduces the critical pore size and average pore size of the cement composite material, but also exhibits good synergistic effects with carbon nanotubes, which can significantly optimize the pore structure. Finally, a rationalization suggestion for the co-doping of nanosilica and carbon nanotubes was given to achieve a significant increase in the flexural strength, compressive strength and loss factor of cement-based materials.展开更多
文摘In a nanocomposite structure, it is anticipated that high damping can be achieved by taking advantage of the interfaeial friction between the nanotubes and the polymer. The purpose of this paper is to investigate the structural damping characteristics of polymeric composites containing Carbon nanotubes （CNTs） with various kinds and amounts. The damping characteristics of the specimens with 0 wt% and 0.5 wt% nanotube contents were computed experimentally. Through comparing with neat resin specimens, the study showed that one can enhance damping by adding CNT fillers into polymeric resins. Similarly experiment showed that the maximum value of damping ratio was obtained at 0.5 wt%.
文摘This paper conducted experimental studies on the damping and mechanical properties of carbon nanotube-nanosilica-cement composite materials with different carbon nanotube contents. The damping and mechanical properties enhancement mechanisms were analyzed and compared through the porosity structure test, XRD analysis, and scanning electron microscope observation. The results show that the introduction of nanosilica significantly improves the dispersion of carbon nanotubes in the cement matrix. At the same time, the addition of nanosilica not only effectively reduces the critical pore size and average pore size of the cement composite material, but also exhibits good synergistic effects with carbon nanotubes, which can significantly optimize the pore structure. Finally, a rationalization suggestion for the co-doping of nanosilica and carbon nanotubes was given to achieve a significant increase in the flexural strength, compressive strength and loss factor of cement-based materials.
