Preparation and characterization of diatomite/polyurethane compound sound-absorbing materials
ZHAO Ruixia
Abstract：Diatom ite/Polyurethane compound sound-absorbing building materials with excellent sound absorption performance was successfully prepared by using diatomite,polyurethane,blowing agent,open cell agent and flame retardant agent as raw materials. The phase composition,microstructure,pore morphology,density and sound absorption properties of the materials were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),Archimedes method and transfer function impedance tube sound absorption test system. The influence of raw materials on density and the different frequency,blowing agent and density on the sound absorption coefficient were studied. The results show that when the density is 0.168 g/cm3,the absorption peak of the composite material is 1600 Hz,the sound absorption coefficient is up to 0.93,and the high frequency range is more than 2000 Hz.
Keywords：diatomiteporous materialpolyurethanesound absorption
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 54-57 )