Electret Characteristics of Hybrid Films Consisting of Porous Polytetrafluoroethylene and Teflon Fluoroethylenepropylene with COrona Charging

作     者：陈钢进 RudiDanz 等 

作者机构：StateKeyLaboratoryofSiliconMaterialszhejiangUniversityHangzhou310027 ZhejiangUniversityofScienceandTechnologyHangzhou310027 FraunhoferInstituteofAppliedPolymerResearchGolmGerm 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2002年第19卷第12期

页      面：1856-1858页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Supported in part by the German Federal Ministry of Education and Research 

主　　题：CHARGES Charging HYBRID Electric charge Electrets trapping Films Polytetrafluoroethylene charging Hybrid electric vehicles CHARGING(ACCOUNTTNG) 

摘      要：We have prepared hybrid films consisting of porous polytetrafluoroethylene (PTFE) and Teflon fluoroethylenepropylene (FEP) and we have investigated their charge dynamics of injection, transport and trapping using corona charging, isothermal and thermally stimulated surface-potential decay measurements. The results indicate that the hybrid film samples show different electret characteristics when charged through side PTFE or side FEP. The samples charged negatively through side porous PTFE show the best charge stability. Their charge dynamics differs very much from a single film. The effect of corona polarity on the electret behaviour in the hybrid film is very large. The experimental results are explained with the three structure level model of charge storage in electrets