Piezoelectric Polytetrafluoroethylene Films with Void Structure
Polytetrafluoroethylene (PTFE) films with a void structure are prepared by the sintering process. Such void PTFE films are piezoelectric after proper corona charging. The quasi-static piezoelectric d33 coefficients up to 250 pC/N are obtained. Pre-ageing treatment is an effective method to further improve the thermal stability. For the samples with pre-ageing treatment, the the d33 coefficients are very stable when exposed to 120℃. The values of d33 are slightly applied pressure dependent in the range of 50kPa.
polytetrafluoroethylene piezoelectret piezoelectricity electret
X.Zhang X.Wang G.Cao D.Pan Z.Xia
Pohl Institute of Solid State Physics, Tongji University Shanghai, 200092, CHINA
国际会议
哈尔滨
英文
1163-1165
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）