Penentuan Konduktivitas Termal Dan Akustikal Material Komposit Serat Batang Kelapa Sawit

Abstract

Aims of this study to obtain the value of the thermal conductivity and acoustical of the composite material of oil palm trunks (Elaeis guineensis Jacq), by utilizing waste oil palm trunks. Determination of the thermal conductivity value using the ASTM C177-92 test standard with the dimensions of the test specimen 250 x 250 (mm) and 15 mm thick, while the acoustic test refers to the ISO-354: 2003 standard with the dimensions of the test specimen 1000 x 1000 (mm) and a thickness of 15 mm. The ratio of fiber and matrix 30 : 70 (%) consists of three variations of the matrix. 23 : 23 : 24 : 23 (%); 30 : 20 : 20 : 30 (%) and 40 : 15 : 15 : 40 (%). From the test to determine the thermal conductivity value of the best oil palm trunk composite, it was obtained from sample 3 (three) with a value of (k) = 0.019 W/m°C, while the lowest thermal conductivity value was obtained by sample 1 (one) with a thermal conductivity value of 0.015 W/m°C. In the acoustic test, the best sound absorption coefficient was obtained by pure oil palm trunk board with a sound absorption coefficient at a frequency of 4000 Hz = 0.45 at a frequency of 5000 Hz, = 0.47 and at a frequency of 6300 Hz, = 0.68. It can be concluded that this palm trunk board can be used as an acoustic material in a room for partitions and decorations and can also be used as an insulation material for relatively low temperatures.