Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Simulation of the Corona Charging Process in Polypropylene Electret for Sensor Material

  • Park, Geon-Ho (Dept. of Mobile Communication, Chungkang College of Cultural Industries) ;
  • Park, Young-Chull (Dept. of Mobile Communication, Chungkang College of Cultural Industries) ;
  • Yang, Jung-Yoon (Dept. of Computer Network, Chungkang College of Cultural Industries)
  • Published : 2000.10.13
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Abstract

In order to estimate spatial charging process in the corona charging which has been used to make polymer electret, the electrical properties of polypropylene film were obtained from Thermally Stimulated Current (TSC) measurements after corona charging between knife electrode and cylinder electrode with the voltages of -5, -6, -7 and -8[kV], respectively. And then the electrostatic contour and the electric field vector were also simulated by using Finite Element Method (FEM). The edge effect around edge of knife electrode affected the electrostatic contour on surface of specimen and the electric field concentration inside specimen. The uneven charging state in the electret due to the mistake on design could be calculated and so the optimal design of corona charging device which is appropriate to various materials is come to be practicable.

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