| 聚四氟乙烯微孔膜的共振声性能实验 |
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| 引用本文： | 林万峰,娄文忠,许菁,李伟华,胡亮. 聚四氟乙烯微孔膜的共振声性能实验[J]. 高分子材料科学与工程, 2010, 0(5): 115-118 |
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| 作者姓名： | 林万峰 娄文忠 许菁 李伟华 胡亮 |
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| 作者单位： | 空军航空大学物理教研室;北京理工大学宇航科学技术学院;长春工程学院理学院 |
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| 基金项目： | 国家自然科学基金资助项目(60976079) |
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| 摘 要： | 对聚四氟乙烯(PTFE)微孔膜传声性能进行实验研究,由数据分析得到其传声特点:在无空气腔时,对传声几乎无影响;有空气腔时,明显表现为共振吸声,在100Hz～1500Hz低频段高效透声,在1500Hz～6300Hz高频段共振吸声。因此,PTFE既是优秀透声材料又是优秀的吸声材料。这为其传声理论模型的建立提供了重要依据,意义在于探索微纳孔径薄膜材料的传声规律。
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| 关 键 词： | 传声性能 聚四氟乙烯微孔膜 共振吸声 透声 |
Test on Acoustic Resonance Characteristic of PTFE Micro-Aperture Membrane |
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| LIN Wan-feng,LOU Wen-zhong,XU Jing,LI Wei-hua,HU Liang. Test on Acoustic Resonance Characteristic of PTFE Micro-Aperture Membrane[J]. Polymer Materials Science & Engineering, 2010, 0(5): 115-118 |
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| Authors: | LIN Wan-feng LOU Wen-zhong XU Jing LI Wei-hua HU Liang |
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| Affiliation: | 1. Department of Physics,Air Force Aviation University,Changchun 130022,China; 2. School of Aerospace Science and Engineering,Beijing Institute of Technology,Beijing 100081,China; 3. School of Science,Changchun Institute of Technology,Changchun 130012,China) |
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| Abstract: | The experimental study of sound transmission characteristics was carried out based on polytetrafluoroethylene(PTFE) micro-aperture membrane. The experimental result shows that: when there is no air cavity,it does not affect the sound transmission; when there is air cavity,it is resonant sound absorption,In the frequency range of 100 Hz～1500 Hz,it is low frequency high rate sound transmission zone. In the frequency range of 1500 Hz～6300Hz,it is high frequency resonant sound absorption zone. So the PTFE micro-aperture membrane is a fine sound transmission material as well as a fine sound absorption material. The experimental study provides a solid evidence for the modeling of sound transmission theory of PTFE micro-aperture membrane,and also provides a basis for the further research of sound transmission rule of micro-aperture membrane material. |
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| Keywords: | sound transmission characteristic PTFE micro-aperture membrane resonance absorption voice sound transmission |
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