Porous polytetrafluoroethylene (PTFE) electret films: porosity and time dependent charging behavior of the free surface
Source abstract
Abstract
Electrically charged porous polytetrafluoroethylene (PTFE) films are often discussed as active layers for electromechanical transducers. Here, the electric charging behavior of open-porous PTFE films with different porosities is investigated. Optimized electric charging of porous PTFE films is determined by variation of charging parameters such as electric fields and charging times. Maximum surface potentials are depending on the porosity of the PTFE films. Suitable charging leads to high surface potentials observed on non-stretched or slightly stretched porous PTFE films. Further increase of charging fields yields decreasing values of the surface potential accompanied with an increase of conductivity.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High voltage insulation and dielectric phenomena · Dielectric materials and actuators · Advanced Sensor and Energy Harvesting Materials
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