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http://dx.doi.org/10.5658/WOOD.2014.42.6.714

Developing of Sound Absorption Composite Boards Using Carbonized Medium Density Fiberboard  

Lee, Min (Department of Forest Products, Korea Forest Research Institute)
Park, Sang-Bum (Department of Forest Products, Korea Forest Research Institute)
Byeon, Hee-Seop (College of Agriculture and Life Science, Institute of Agriculture and Life Science, Gyeongsang National University)
Kim, Jong-In (Southern Forest Research Center, Korea Forest Research Institute)
Publication Information
Journal of the Korean Wood Science and Technology / v.42, no.6, 2014 , pp. 714-722 More about this Journal
Abstract
In the previous study, a variety of wood-based panels was thermally decomposed to manufacture carbonized boards that had been proved to be high abilities of insect and fungi repellence, corrosion and fire resistant, electronic shielding, and formaldehyde adsorption as well as sound absorption performance. Based on the previous study, carbonized medium density fiberboard (c-MDF) was chosen to improve sound absorption performance by holing and sanding process. Three different types of holes (cross shape, square shape, and line) with three different sanding thickness (1, 2, and 3 mm) were applied on c-MDF and then determined sound absorption coefficient (SAC). The control c-MDF without holes had 14% of SAC, however, those c-MDFs with holes had 16.01% (square shape), 15.68% (cross shape), and 14.25% (line) of SAC. Therefore, making holes on the c-MDF did not significantly affect on the SAC. As the degree of sanding increased, the SAC of c-MDF increased approximately 65% on sanding treated c-MDFs (21.5, 21.83, and 19.37%, respectively) compared to the control c-MDF (13%). Based on these results, composite sound absorbing panel was developed with c-MDF and MDF (11 mm). The noise reduction coefficient of composite sound absorbing panel was 0.45 which was high enough to certify as sound absorbing material.
Keywords
noise reduction coefficient; carbonized board; sound absorption material; medium density fiberboard; carbonization;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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