Developments of Sound Absorption of Fine Performance Polyurethane-based Porous Composite Materials
Abstract
A new type of sound absorbing material is made from semi-rigid polyurethane foam body and cement.Water-cement ratio,vesicant content and pore size have a significant impact on the performance of the material.The sound absorption performance of the material obtains optimum when the cell diameter,gas former and water-cement ration separately equal to 1.9mm,0.2% and 0.5.The sound absorption coefficient of the material is tested by standing wave...
Paper Details
Title
Developments of Sound Absorption of Fine Performance Polyurethane-based Porous Composite Materials
Published Date
Jan 1, 2007
Journal
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Notes
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