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

산업용 센서에 사용하는 Teflon계 박막 일렉트렛의 내열성 향상에 관한 연구

  • 김병수 (인하대학교 전기공학과) ;
  • 이덕출 (인하대학교 전기공학과)
  • Published : 2003.09.01


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.


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