SOUND ABSORPTION BEHAVIOR OF ELECTROSPUN POLYACRYLONITRILE NANOFIBROUS MEMBRANES

The acoustical damping property of electrospun polyacrylonitrile （PAN） nanofibrous membranes with different thicknesses and porosities was investigated. The sound absorption coefficients were measured using the impedance tube instrument based on ISO10534-2：1998（E）. Results indicate that the first re...

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Bibliographic Details
Published in:Chinese journal of polymer science 2011-11, Vol.29 (6), p.650-657
Main Authors: Xiang, Hai-fan, Tan, Shuai-xia, Yu, Xiao-lan, Long, Yu-hua, Zhang, Xiao-li, Zhao, Ning, Xu, Jian
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Industrial Chemistry/Chemical Engineering
PAN
Polymer Sciences
吸声性能
吸收频率
声学材料
声行为
纳米纤维膜
聚丙烯腈
静电
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Summary:The acoustical damping property of electrospun polyacrylonitrile （PAN） nanofibrous membranes with different thicknesses and porosities was investigated. The sound absorption coefficients were measured using the impedance tube instrument based on ISO10534-2：1998（E）. Results indicate that the first resonance absorption frequency of nanofibrous membranes shifts to the lower frequency with the increase of the back cavity or the thickness of membranes. Moreover, the sound absorption performance of the perforated pane/ can be greatly improved by combination with a thin layer of PAN nanofibrous membrane. Traditional acoustical damping materials （foam, fiber） coated with nanofibrous membranes have better acoustical performance in the low and medium frequency range than that of acoustical materials alone. All of the results demonstrate the PAN nanofibrous membrane is a suitable candidate for noise reduction.
ISSN:0256-7679
1439-6203
DOI:10.1007/s10118-011-1079-x