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。
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.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2010年第5期115-118,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(60976079)
关键词
传声性能
聚四氟乙烯微孔膜
共振吸声
透声
sound transmission characteristic
PTFE micro-aperture membrane
resonance absorption voice
sound transmission
