Correlation between sound absorption coefficients with physical and mechanical properties of insulation boards made from sugar cane bagasse

Physical and mechanical properties, as well as sound absorption coefficients, of insulating boards made of bagasse were studied here. Urea–formaldehyde (UF) and melamine–urea–formaldehyde (MUF) were used to produce homogeneous as well as three-layered insulating boards with three densities of 0.3, 0.4, and 0.5 g/cm3. The obtained results indicated that resin-type had no significant effect on physical or mechanical properties; however it affected sound absorption coefficients. Physical and mechanical properties were significantly influenced by the density, while sound absorption coefficients were affected by the board-type. High correlation was found between the physical and mechanical properties; however, considering the low correlation between the physical and mechanical properties with the SAC values, it may be concluded that SAC could not be an authentic criterion to predict physical and mechanical properties in particleboards made of sugar cane bagasse.