Development of porous electret polymer and its application in electrostatic loudspeaker
碩士 === 國立臺灣大學 === 工程科學及海洋工程學研究所 === 96 === In the thesis , we utilized the stable charge storing capabilities of electret to replace the DC to DC converter based biased circuit used in electrostatic loudspeaker and developed an electret speaker. Regarding the elecret materials development, the resea...
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ndltd-TW-096NTU053450582015-11-25T04:04:36Z http://ndltd.ncl.edu.tw/handle/15458036382653945661 Development of porous electret polymer and its application in electrostatic loudspeaker 孔洞駐極體的研發及在靜電揚聲器上的應用 Jia-Lun Chen 陳嘉倫 碩士 國立臺灣大學 工程科學及海洋工程學研究所 96 In the thesis , we utilized the stable charge storing capabilities of electret to replace the DC to DC converter based biased circuit used in electrostatic loudspeaker and developed an electret speaker. Regarding the elecret materials development, the research efforts concentrated on improving the solution type non-fluoride polymer. Influence of electret properties through mixing heterology polymer and adding the polar molecule into polymer were studied. Through observing the material surface morphology and cross-sections by using scanning electron microscopy and performing materials thermal discharge condition, factors influence the electret properties were discussed. In addition, adhesion between the electret polymer and the metal layer were improved as well. From the experimental results, it was identified that adding specific ratio of polar molecule into polymer can produce the proper porous structure to enhance charge storage capability to -1000 . In the thesis, we successfully utilized porous electret polymer to develop an electret headphone. This newly developed headphone has 400Hz resonance frequency and can achieve 98 sound pressure when driven by 100V signal. 李世光 2008 學位論文 ; thesis 81 zh-TW |
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碩士 === 國立臺灣大學 === 工程科學及海洋工程學研究所 === 96 === In the thesis , we utilized the stable charge storing capabilities of electret to replace the DC to DC converter based biased circuit used in electrostatic loudspeaker and developed an electret speaker. Regarding the elecret materials development, the research efforts concentrated on improving the solution type non-fluoride polymer. Influence of electret properties through mixing heterology polymer and adding the polar molecule into polymer were studied. Through observing the material surface morphology and cross-sections by using scanning electron microscopy and performing materials thermal discharge condition, factors influence the electret properties were discussed. In addition, adhesion between the electret polymer and the metal layer were improved as well. From the experimental results, it was identified that adding specific ratio of polar molecule into polymer can produce the proper porous structure to enhance charge storage capability to -1000 . In the thesis, we successfully utilized porous electret polymer to develop an electret headphone. This newly developed headphone has 400Hz resonance frequency and can achieve 98 sound pressure when driven by 100V signal.
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author2 |
李世光 |
author_facet |
李世光 Jia-Lun Chen 陳嘉倫 |
author |
Jia-Lun Chen 陳嘉倫 |
spellingShingle |
Jia-Lun Chen 陳嘉倫 Development of porous electret polymer and its application in electrostatic loudspeaker |
author_sort |
Jia-Lun Chen |
title |
Development of porous electret polymer and its application in electrostatic loudspeaker |
title_short |
Development of porous electret polymer and its application in electrostatic loudspeaker |
title_full |
Development of porous electret polymer and its application in electrostatic loudspeaker |
title_fullStr |
Development of porous electret polymer and its application in electrostatic loudspeaker |
title_full_unstemmed |
Development of porous electret polymer and its application in electrostatic loudspeaker |
title_sort |
development of porous electret polymer and its application in electrostatic loudspeaker |
publishDate |
2008 |
url |
http://ndltd.ncl.edu.tw/handle/15458036382653945661 |
work_keys_str_mv |
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