-
71.
公开(公告)号:US20070213417A1
公开(公告)日:2007-09-13
申请号:US11547474
申请日:2005-04-14
申请人: Martin Stork , Moritz Ehrenstein , Thomas Breiner , Andreas Poppe , Armin Alteheld , Volker Warzelhan
发明人: Martin Stork , Moritz Ehrenstein , Thomas Breiner , Andreas Poppe , Armin Alteheld , Volker Warzelhan
IPC分类号: C08J9/26
CPC分类号: C08G18/778 , C08G18/3895 , C08G18/792 , C08G18/807 , C08G18/809 , C08G2101/00 , C08J9/008 , C08J9/009 , C08J2205/05
摘要: Modified open-cell foams having a density in the range from 5 to 1000 kg/m3, a mean pore diameter in the range from 1 μm to 1 mm, a BET surface area in the range from 0.1 to 50 m2/g and an acoustic absorption factor of more than 50% at a frequency of 2000 Hz at a layer thickness of 50 mm, comprising in the range from 1 to 4000 ppm, based on the weight of the unmodified open-cell foam, fixed particles (b) having a mean diameter (number average) in the range from 5 nm to 900 nm.
摘要翻译: 密度在5至1000kg / m 3的范围内的改性开孔泡沫,平均孔径在1μm至1mm的范围内,BET表面积在0.1 至50m 2 / g,在2000Hz的频率下,在50mm的层厚度下的声吸收系数大于50%,包括在1至4000ppm的范围内,基于 未改性的开孔泡沫体的重量,平均直径(数均)在5nm〜900nm范围内的固定粒子(b)。