The electret properties of two kinds of poly(vinylidene fluoride-hexafluoropropylene) copolymer films

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI:10.1109/ISE.2005.1612342

Feipeng Wang, Z. Xia, X. Qiu, Jun Shen

{"title":"The electret properties of two kinds of poly(vinylidene fluoride-hexafluoropropylene) copolymer films","authors":"Feipeng Wang, Z. Xia, X. Qiu, Jun Shen","doi":"10.1109/ISE.2005.1612342","DOIUrl":null,"url":null,"abstract":"P(VDF-HFP) (poly(vinylidene fluoride-hexafluoro-propylene)) copolymer is a new member of PVDF family. In this paper, the electret properties of the two kinds of casting prepared P(VDF-HFP) copolymer films whose content of HFP is 4.7% and 5.9% respectively were discussed with the focus on the influences of mechanically thermal stretching process and of the content of HFP on electret properties of the said copolymer. Experimental results point out that the said copolymer electret film is a polar material, i.e. there exist both oriented dipoles and deposited space charges in the film after charging. The mechanically thermal stretching process not only increases the density of oriented dipoles and deposited space charges but also improves the stability of deposited space charges; however, the increase of HFP content in the copolymer has a negative impact on the density of oriented dipoles and deposited space charges. The measurement result by means of Laser Doppler Vibrometer shows the copolymer in which the HFP content is 4.7% has a notable converse coefficient as high as 130pm/V.","PeriodicalId":364651,"journal":{"name":"2005 12th International Symposium on Electrets","volume":"18 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2005 12th International Symposium on Electrets","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISE.2005.1612342","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 3

Abstract

P(VDF-HFP) (poly(vinylidene fluoride-hexafluoro-propylene)) copolymer is a new member of PVDF family. In this paper, the electret properties of the two kinds of casting prepared P(VDF-HFP) copolymer films whose content of HFP is 4.7% and 5.9% respectively were discussed with the focus on the influences of mechanically thermal stretching process and of the content of HFP on electret properties of the said copolymer. Experimental results point out that the said copolymer electret film is a polar material, i.e. there exist both oriented dipoles and deposited space charges in the film after charging. The mechanically thermal stretching process not only increases the density of oriented dipoles and deposited space charges but also improves the stability of deposited space charges; however, the increase of HFP content in the copolymer has a negative impact on the density of oriented dipoles and deposited space charges. The measurement result by means of Laser Doppler Vibrometer shows the copolymer in which the HFP content is 4.7% has a notable converse coefficient as high as 130pm/V.

查看原文本刊更多论文

两种聚偏氟乙烯-六氟丙烯共聚物薄膜的驻极体性质

聚偏氟乙烯-六氟丙烯共聚物(VDF-HFP)是PVDF家族的新成员。本文讨论了两种浇铸法制备的HFP含量分别为4.7%和5.9%的P(VDF-HFP)共聚物薄膜的驻极体性能，重点研究了机械热拉伸工艺和HFP含量对共聚物驻极体性能的影响。实验结果表明，该共聚物驻极体膜是一种极性材料，即既有取向偶极子，又有充电后沉积的空间电荷。机械热拉伸不仅增加了取向偶极子的密度和沉积的空间电荷，而且提高了沉积空间电荷的稳定性;然而，共聚物中HFP含量的增加对取向偶极子的密度和沉积的空间电荷有负面影响。激光多普勒测振仪的测量结果表明，当HFP含量为4.7%时，共聚物的反系数高达130pm/V。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2005 12th International Symposium on Electrets

自引率

0.00%

发文量