新型聚四氟乙烯聚四氟乙烯和类聚四氟乙烯聚合物的介电和驻极体特性

10th International Symposium on Electrets (ISE 10). Proceedings (Cat. No.99 CH36256) Pub Date : 1999-09-22 DOI:10.1109/ISE.1999.832050

R. Schwodiauer, G. Neugschwandtner, S. Bauer-Gogonea, S. Bauer, J. Heitz, D. Bauerle

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引用次数: 15

摘要

研究了脉冲激光沉积(PLD)聚四氟乙烯(PTFE)在硅衬底、微孔聚四氟乙烯箔和由微孔聚四氟乙烯和全氟环丁烯(PFCB)组成的杂化驻极体上的介电、弹性和驻极体性能。用介电膨胀法检测了这些非极性聚合物的玻璃相变和结构相变:PLD-PTFE和微孔PTFE箔显示了PTFE的一阶相变特征。微孔聚四氟乙烯的纤维状结构导致了较大的电伸缩系数。类聚四氟乙烯材料和混合聚四氟乙烯- pfcb驻极体均表现出优异的电荷存储稳定性，性能优于传统的聚四氟乙烯。在小型化驻极体器件和灵敏的驻极体水听器中应用。

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Dielectric and electret properties of novel Teflon PTFE and PTFE-like polymers

Dielectric, elastic and electret properties were investigated on pulsed-laser deposited (PLD) polytetrafluoroethylene (PTFE) on silicon substrates, on microporous PTFE foils and on hybrid electrets consisting of microporous PTFE and perfluorocyclobutene (PFCB). Dielectric dilatometry was used to detect glass- and structural phase-transitions in these nonpolar polymers: PLD-PTFE and microporous PTFE foils show the characteristic first-order phase transitions of PTFE. The fibrillar structure of the microporous PTFE results in large electrostrictive coefficients. Both the PTFE-like materials and the hybrid PTFE-PFCB electrets show excellent charge-storage stability and surpass conventional PTFE in performance. Applications can be anticipated in miniaturized electret devices as well as sensitive electret hydrophones.

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来源期刊

10th International Symposium on Electrets (ISE 10). Proceedings (Cat. No.99 CH36256)

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