Sound absorption property of PVA/PEO/GO nanofiber membrane and non-woven composite material
Sound absorption property of PVA/PEO/GO nanofiber membrane and non-woven composite material
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DOI：
10.1177/1528083719832857
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发表时间：
2020-10-01
影响因子：
3.2
通讯作者：
Zuo, Baoqi
中科院分区：
文献类型：
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作者：
Liu, Huan;Zuo, Baoqi
采用螺旋叶片静电纺丝法制备了聚乙烯醇/聚氧化乙烯（70/30 wt%）共混膜，并对其进行了掺杂实验。用X射线衍射和扫描电子显微镜研究了共混膜的特征性能。通过阻抗管测试组合物（隔膜和针刺非织造织物）的吸声性能。无纺布与薄吸声膜复合后，其吸声性能有了很大的提高。随着氧化石墨烯的加入，纤维相互缠绕成环状并形成网络，从而降低了膜的面密度和表面粗糙度。含聚乙烯醇/聚氧化乙烯复合膜和含聚乙烯醇/聚氧化乙烯/氧化石墨烯复合膜的复合材料在不同频段表现出不同的吸声性能。当纤维变异系数较小时，复合材料的平均吸声系数较高。而同时含有聚乙烯醇/聚氧化乙烯和聚乙烯醇/聚氧化乙烯/氧化石墨烯复合膜的复合材料具有相似的吸声性能，且平均吸声系数大于聚乙烯醇/聚氧化乙烯复合材料。
Blend films based on polyvinyl alcohol/polyethylene oxide (70/30 wt%) undoped and doped with different concentration of graphene oxide were prepared by spiral vane electrospinning. Characteristic properties of the blend films were investigated by using X-ray diffraction and scanning electron microscopy. The sound absorption performance of the compositions (nanofiber membranes and needle punched non-woven fabric) was tested by an impedance tube. The sound absorption performance of non-woven fabric has greatly improved after combining with thin nanofiber membranes. With addition of graphene oxide, the fibers were intertwined in a loop and form a network, the areal density and surface roughness of the nanofiber membrane are reduced. Composites containing polyvinyl alcohol/polyethylene oxide nanofiber membranes and composites containing polyvinyl alcohol/polyethylene oxide/graphene oxide nanofiber membranes exhibited different sound absorption properties in different frequency bands. When the fiber coefficient of variation was small, the average sound absorption coefficient of the composite material was high. However, composites containing both polyvinyl alcohol/polyethylene oxide and polyvinyl alcohol/polyethylene oxide/graphene oxide nanofiber membranes had similar sound absorption properties, and the average sound absorption coefficient was greater than that of polyvinyl alcohol/polyethylene oxide composites.