화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.28, No.5, 361-366, September, 2004
Export Citation
분포형 촉각센서를 위한 압전성 폴리(비닐리덴 플루오라이드) 필름의 극화 특성
Poly(vinylidene fluoride) Piezoelectric Film Characteristics by Poling Conditions for Distributed Tactile Sensor
이경섭, 김동욱, 김형태1, 정광목1, 최혁렬1, 남재도†
  • 성균관대학교 고분자공학과
  • 1성균관대학교 기계공학과
Kyungsub Lee, Dongouk Kim, Hyungtae Kim1, Kwangmok Jung1, Hyoukryeol Choi1, and Jae-Do Nam†
  • Department of Polymer Science and Engineering, Sungkyunkwan University, 300 Chunchun-dong, Jangan-gu, Suwon, Gyunggi-do 440-746, Korea
  • 1Department Mechanical Engineering, Sungkyunkwan University, 300 Chunchun-dong, Jangan-gu, Suwon, Gyunggi-do 440-746, Korea
E-mail:
초록
가해준 하중에 따라 폴리(비닐리덴 플루오라이드) (PVDF) 필름에서 발생하는 전압을 측정하여 분포형 촉각센서로서의 특성을 연구하였다. PVDF 필름에 전기장과 온도를 달리하면서 극화 (poling)의 변화를 주었고 이에 따른 필름의 압전성을 나타내는 β-결정상의 피크를 FT-IR, DSC와 XRD를 사용하여 확인하였다. 본 연구에서 사용된 온도와 전압의 영역에서는 그고하 온도가 증가함에 따라 그리고 극화 전압이 증가함에 따라 β-결정상은 증가하였으며, 이에 따라 유전상수가 역시 증가하였다. 8X8어레이 (array)로 제작된 촉각센서에 힘을 가하여 극화에 따른 전압 발생량을 측정한 결과, 극화가 많이 된 시편의 경우 높은 전압이 발생하는 것을 확인하였다.
The poling characteristics of PVDF (poly(vinylidene fluoride)) film was investigated by measuring the electric voltage generated by the external load for the distributed tactile sensor applications. The poling conditions for the PVDF films were controlled by changing temperature and electric field, and the resulting crystal structure of the β-phase crystal was confirmed by FT-IR, DSC, and XRD experiments. The β-phase crystal was increased with the poling temperature and poling voltage, and subsequently the permittivity of the poled PVDF films was increased. Finally, the prototype tactile sensor was tested by a 8 8 array circuit exhibiting high voltage signal for the highly poled PVDF films.
Keywords:β-crystalline;dielectric constant;piezoelectricity;PVDF;tactile sensor
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