通过模压法成功制备轻质多孔陶瓷吸声材料,采用JTZB吸声系数测试系统研究造孔剂粒径、含量以及样品厚度对多孔陶瓷材料吸声性能的影响.结果表明:造孔剂含量为50vol％时,大孔径多孔陶瓷吸声性能优于小孔径多孔陶瓷;随着造孔剂含量的增加,第一吸收峰从低频向高频移动,峰值从0.41增加到0.82,孔隙率过高和过低都不利于提高材料吸声性能;样品厚度从10 mm增加到30 mm,第一吸收峰逐渐向着低频方向移动;造孔剂含量为60vo1％,样品厚度为20 mm时,样品整体具有优异吸声性能,并逐层在其背后加入空腔发现,随着空腔层数的增加,样品的第一吸收峰从高频向低频移动,平均吸声系数逐渐增大.
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