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一引言在声波传播过程中使用吸声材料能较好地控制噪声，同时不影响操作［1］。吸声材料按吸声机理的不同可分为多孔性的和共振型的两大类，其中多孔性吸声材料吸收中高频的噪声效果较好［2］。国内使用的多孔性吸声材料大多是用无机矿物纤维加工的，如玻璃棉、矿棉、岩棉等。
INTRODUCTION The use of sound-absorbing materials in the propagation of sound waves provides good noise control without affecting the operation [1]. Sound absorption materials according to the different sound absorption mechanism can be divided into two types of porosity and resonance type, including porous sound-absorbing materials to absorb high-frequency noise better [2]. Porous sound-absorbing materials used domestically are mostly made of inorganic mineral fibers, such as glass wool, mineral wool and rock wool.