静电纺丝制备压电聚偏氟乙烯奈米纤维膜与吸音组件性能之评价.PDFVIP

靜電紡絲製備壓電聚偏氟乙烯奈米纖維膜與吸音組件性能之評估 Sound Absorption of Electrospun Polyvinylidene Fluoride/Carbon Nanotube Membranes *1 1 1 1 2 吳昌謀 (30%) 、周珉卉(50%) 、黃毓宸(10%) 、曾玟媛(10%) 、黃旭曄 1 2 國立台灣科技大學 、富雅樂企業股份有限公司 C. M. Wu1* 、M. H. Chou1 、Y. C. Huang1 、W. Y. Zeng1 、H. Y. Huang2 Department of Materials Science and Engineering, National Taiwan University of Science and Technology1 Fehrer Enterprise Co. Ltd2 摘要 本文旨在使用靜電紡絲技術，並結合壓電材料電聲轉換特性，開發出一種新型的 壓電PVDF 奈米纖維吸音材料，並探討其晶體結構與添加奈米導電碳材對PVDF 奈米纖維膜的壓電性能之影響。結果顯示，靜電紡絲能有效地誘導β 結晶相，且 添加奈米碳管或石墨烯後更能利用界面極化效應 ，以增加壓電特性。電紡PVDF 奈米纖維膜具有高比表面積，透過聲波與材料的接觸產生振動與摩擦，聲能將轉 換成熱能及電能，進而達到吸音的效果。而奈米導電碳材添加可提高電紡PVDF 的壓電效應且更進一步將吸收頻段轉至低頻區。最後針對產業的應用性和未來性 亦進行討論。 Abstract In this study, a novel sound-absorbing material was developed using electrospun piezoelectric PVDF membranes. The effects of conductive carbon nanomaterials such as carbon nanotube and graphene and electrospinning on the crystal structure and piezoelectric properties of PVDF nanofiber membranes were examined. The results showed that electrospinning effectively induces the β phase and increases piezoelectricity. Addition of carbon nanomaterials further improved the piezoelectric properties through interfacial polarization. Electrospun PVDF nanofiber membranes increased the surface area, thus increasing its contact with the sound waves and resulting in more sound energy absorption by friction and vibration. Sound absorption of the carbon nan