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Correlation between gas and liquid permeability with noise reduction coefficient in insulation boards made from sugar cane bagasse
Shahid Rajaee Teacher Training University, Iran.
University of Tehran, Iran.
University of Tehran, Iran.
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology. Georg August University Gottingen, Germany. (Forest Product Group)ORCID iD: 0000-0003-0883-2306
2017 (English)In: Bulgarian Journal of Agricultural Science, ISSN 1310-0351, Vol. 23, no 3, 674-681 p.Article in journal (Refereed) Published
Abstract [en]

Specific gas and liquid permeability, as well as noise reduction coefficients, in insulating boards made of sugar-cane 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 MUF slightly decreased gas and liquid permeability, but it did not significantly affect the noise reduction coefficients. Gas and liquid permeability were considerably affected by the density of the boards, due to the compression between the bagasse particles and less spaces and voids to let the fluids to pass through. However, noise reduction coefficients were significantly affected both by the density, as well as the board-type. More compression between the particles and the consequent less space between the bagasse particles entangled the waves; further more, the sudden change between the layers in the three-layered boards formed a barrier towards transmission of waves.

Place, publisher, year, edition, pages
2017. Vol. 23, no 3, 674-681 p.
National Category
Wood Science Agricultural Science Materials Engineering
Identifiers
URN: urn:nbn:se:lnu:diva-67212OAI: oai:DiVA.org:lnu-67212DiVA: diva2:1130812
Available from: 2017-08-11 Created: 2017-08-11 Last updated: 2017-09-15Bibliographically approved

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