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A Study on the Way to Increase Heat Resistance of Teflon Type Thin Film Electret Applied for Industrial Sensor  

김병수 (인하대학교 전기공학과)
이덕출 (인하대학교 전기공학과)
Publication Information
Journal of the Korean Society of Safety / v.18, no.3, 2003 , pp. 60-63 More about this Journal
Abstract
For the increase the charge stability of teflon electrets for used at uncomfortable industrial circumstances with high temperature or humidity, We made an investigation into double layer effect of teflon electrets. Teflon AF film was spincoated on FEP film and then the charge storage property of AF/FEP dual film was investigated to be compared with FEP film. It was found that the AF/FEP dual film has higher surface potential than FEP film on the repeated charging and annealing process. It seems that AF/FEP dual film has higher thermal stability than FEP film through TSC measurement. If the investigations of the double layer effect of Teflon film carried out more closely with it's molecular structures and surface conditions, it may be effectively improved the stability of charge storage.
Keywords
electrets; thermal stability; charge storage; double layer;
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  • Reference
1 P. W. Chudleigh, 'Mechanism of Charge Transfer to a Polymer Surface by a Conducting Liquid Contact,' J. Appl. Phys. Vol. 47, pp. 4474-4483,1976
2 W. D. Greason and B. H. Beyer, 'Coma Charging Method for Controlled Production of Film Electrets,' in 1982 Annual IAS-IEEE Meeting pp. 1148-1152
3 J. H. Lowry, J. S. Mendlowitz. and N. S. Subramanian, 'Optical Characteristics of Teflon AF Fluoroplastic Materials,' Opt. Eng. Vol 31, pp. 1982-1985, 1992   DOI
4 G. M. Sessler, 'Electrets,' Laplacian Press, pp. 345-381, 1998
5 W. Stark, 'Electret Formation by Electrical Discharge in Air,' J. of Electrostatics, Vol. 22, pp.329-339, 1989   DOI   ScienceOn
6 이덕출, 진경시, '고분자 코로나 일렉트렛의 이상 열자극전류에 관한 연구,' 전기학회논문지 제 3권, pp. 26-33, 1985
7 G. M. Sessler and J. E. West, 'Production of High Quasi-permanent Charge Densities on Polymer Foils by Applications of Breakdown Fields,' J. Appl. Phys. Vol. 43, pp. 922-926, 1972   DOI
8 P. W. Chudleigh, R. E. Collins, and G. D Hancock, 'Stability of Liquid charged Electrets,'Appl. Phys. Lett, Vol 23, pp. 211-212, 1973   DOI
9 R. A. C. Altafim, J. A. Giacometti and J. M. Janiszewski, 'A Novel Method for Electret Production using Impulse Voltages,' IEEE Trans. Elec. InsuL., Vol. 27, pp. 739-743, 1992   DOI   ScienceOn
10 B. Gross, R. Gerhard-Multhaupt, A. Berraissoul, and G. M. Sessler, 'Electron-beam Poling ofPiezoelectric Polymer Electrets,' J. Appl. Phys. Vol. 62, pp. 1429-1432
11 T. Lu, 'Charge Storage in Teflon Films,' IEEE ISE9, pp. 66-71, 1996
12 P. Gunther, H. Ding, and R. Gerhard-Multhaupt, 'Electret properties of spin-coated Teflon-AF films,' CEIDP Annual Report, pp. 197-202, 1993