Influence of Nanodiamonds on Mechanical, Acoustic, Vibration Damping and Flame Retardancy in Jute Fiber-Reinforced Epoxy Composite Panels Used in Indoor Applications
摘要
This article examines the impact of incorporating Nanodiamonds into jute fiber-reinforced epoxy resin composite panels which are used as acoustic material for indoor applications.
Materials and methodsThe laminates were fabricated by VRIP (Vacuum resin infusion process). The percentage of nanodiamonds that were incorporated into the mixture is 0.2 wt%, 0.4 wt%, and 0.6 wt%, respectively. The sound absorption coefficient, modal analysis, flame retardant, voids, and dispersion of nanodiamonds in the laminates were evaluated. Using an impedance tube, the sound absorption coefficient was determined. Impulse hammer excitation method is employed to find natural frequency and vibration damping. Flame-retardant properties were evaluated by the UL-94 vertical and horizontal flammability tests. The dispersion of nanodiamonds (NDs) was studied using a scanning electron microscope (SEM). The voids were evaluated using a micro-x-ray computed tomography (CT) scanner.
ResultsThe sound absorption coefficient showed significant improvement with the addition of nanodiamonds at concentrations of 0.4 wt.%. NDs (0.86) and 0.6 wt.%. NDs (0.89) at higher frequencies when compared with other panels. Enhancement of damping factor and natural frequency values (0.4%). Formation of char by nanodiamonds enables the flame-retardant property of material. The scanning electron microscopy (SEM) examination revealed a fine dispersion of nanodiamonds (NDs) in 0.4% wt. NDs laminate. CT scan results show the existence of closed cavities.
ConclusionThe jute fiber composite panels made by integrating nanodiamonds have shown the qualities of good sound absorption material which can be used in indoors for sound absorption.