Abstract

• The acoustic property of polyurethane foam and polyurethane composite foams reinforced with different concentration (0wt%, 2wt%, 4wt% and 6wt %) of TiO2 particles were investigated. The particle size of TiO2 particle was analyzed by X-ray diffraction (XRD). The morphology of polyurethane composite foams was characterized by using optical microscopy. The acoustic property of polyurethane composite foams was measured using one microphone impedance tube method. The result show that polyurethane foam reinforced by TiO2 particles have better the sound absorption properties than pure polyurethane foam and 6 wt% of TiO2 particles reinforced in polyurethane composite foam obtain the maximum value of the sound absorption coefficient.