为了探讨复合结构与隔声性能之间的关系,探索降低低频噪声的新途径,设计并制备了增强材料纵向排列和横向排列的玻璃纤维织物/聚氯乙烯复合材料,采用混响室-静音箱法对其隔声性能进行了测试分析.研究表明:增强材料的排列形式对复合材料的隔声性能有明显的影响,复合材料的厚度超过5 mm后,在相同厚度和面密度的条件下,纵向排列的玻璃纤维织物增强复合材料比横向排列的玻璃纤维织物增强复合材料对低频和低一中频的隔声性能好;且随着复合材料厚度的增加其差异增大.因此,可以通过改变增强材料的排列形式来改善复合材料对低频和低-中频噪声的隔声性能.
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