Abstract
Mitigating vibration in a system has many advantages, from decreasing noise output to increasing component life. Therefore, it is necessary to eliminate the mechanical vibration and sound through appropriate measures. State-of-the-art techniques seeks the utilization of sustainable carbonaceous resources for the development of sound insulating materials to reduce the environmental externalities of the synthetic materials. It is noteworthy to mention that sustainable carbonaceous resources such as biochar, also assist in atmospheric carbon sequestration (capturing and storing CO2) and ultimately limit CO2 concentration in the environment. In the present work, carbonaceous material obtained from biomass waste was utilized as a filler with natural rubber as matrix to develop sound insulating materials. Furthermore, the physical, mechanical, and acoustical properties of developed composites were studied. The sound transmission loss of the composites was measured as per ASTM-E2611 using a four-microphone impedance tube. Noticeably, with the increase in biomass waste filler in the composite, significant improvement in the physical (density), mechanical (tensile strength) and acoustical (sound transmission loss) properties has been observed.
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