Study on the possibility of using bagasse in manufacture of sound-proof particleboard

Document Type : Research Paper

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Abstract

Acoustic properties of composite boards made out of bagasse were studied in this research. Urea-formaldehyde (UF) and melamine-urea-formaldehyde (MUF) adhesives 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 sound absorption coefficient of experimental was measured at five frequencies of 250, 500, 1000, 2000, and 4000 Hz. Results have indicated that the sound absorption coefficient increases as the frequency is increased up to 2000 Hz; further increase in the frequency resulted in decrease in the coefficient. Two type of resins UF and MUF didn't show significant difference in sound absorption. Boards with lower density absorbed less at lower frequencies; however, increase in the density of the boards resulted in the increase in their sound absorption. Furthermore, layered boards resulted in more sound absorption coefficients at lowest frequency of 250 Hz. Higher frequencies, though, have shown more absorption coefficient. It can be concluded that composite boards made of bagasse can be recommended for production of insulating or sound-proof boards

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References

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