Effect of aluminium hydroxide loading on the compression stress and modulus, thermal conductivity and acoustic properties of palm-based polyurethane hybrid composite

• Main Authors: Nor Rabbi’atul ‘Adawiyah Norzali, Khairiah Hj Badri, Mohd Zaki Nuawi
• Format: Article
• Language: English
• Published: Universiti Kebangsaan Malaysia 2011
• Online Access: http://journalarticle.ukm.my/2404/1/15_Nor.pdf; http://journalarticle.ukm.my/2404/; http://www.ukm.my/jsm/
• Institution: Universiti Kebangsaan Malaysia

The effect of adding aluminum hydroxide (ATH) in the palm-based polyurethane hybrid composite was studied. The compression stress and modulus, thermal conductivity and acoustic property were determined. The hybrid composite was prepared by adding 10 wt% of oil palm empty fruit bunch fibre (EFB) followed by ATH at varying amount of 2, 4 and 6 wt% of the overall mass of the resin. The compression stress and modulus gave the highest values of 575 kPa and 2301 kPa, respectively at 2 wt% ATH. At 4 wt% ATH, the compression stress and modulus decreased to 431 kPa and 1659 kPa, respectively and further decreased at 6 wt% ATH to 339 kPa and 1468 kPa respectively. The k-value increased with the increment of the ATH loading exhibited a poor thermal conductivity. Sound absorption analysis indicated that the absorption coefficient was higher at higher frequency (4000 Hz) for all samples with PU-EFB/ATH with 4% ATH showed the highest absorption coefficient.