Evaluation and comparison the properties of acoustic boards made of date palm fiber

Applying acoustic panels made of natural fibers, due to their high biodegradable characteristics, light weight, low density, cheap price and non-toxicity, are proper alternatives absorbers synthetic fibers. Considering stance vast applicability in industry, the possibility producing them palm fibers with sodium silicate adhesive 10 20% two 16 32 mm thicknesses, 350 450 kg/m3 densities, 50 100 particles length (strands), as variable factors types matched 3 repetitions is proposed this article. The palm-trunk discs constituted control sample. effect variables on sound absorption coefficient was assessed. thickness percentage all frequencies significant density except 250 2000 Hz also significant. particle at 500 frequency. effects porosity were results study suggest that by applying date (an agricultural waste) combined adhesive, industrial environment-friendly can be produced field acoustics. This 32-mm-thick panel composed 80% length, adhesive.