发泡PVC混合材料吸声性能的研究

Research in Sound-Absorbing Property of Foaming PVC Blend Inorganic Material

摘要: 发炮塑料是一种常用的吸声降噪材料，发泡ＰＶＣ－无机物混合物吸声材料是一种性能优良的新型吸声材料，它的吸声性能尤其是中低频吸声性能明显比聚氨酯、聚苯乙烯等发泡聚合物好。重点讨论了材料厚度、容重、无机物含量，无机物粒度、加热时间对材料吸声性能的影响。

Abstract: Sound-absorbing materials are the main method in decreasing noise.The blend material obtained in our experiments has good properties in many respects. Its sound-absorbing property especially in middle and low frequency is obviously superior to other foami