Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide
In this work, multi-layered polyimide (PI) films were surface fluorinated at 328 K and 0.05 MPa using F2/N2 mixture with 20% F2 by volume, for a fluorination time of 0, 30 and 60 min, respectively. Then, they were subjected to discharge plasma as barrier dielectrics of surface dielectric barrier dis...
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doaj-cc998fd687394180a582cb86a306d6252020-11-25T02:21:02ZengMDPI AGPolymers2073-43602018-06-0110660610.3390/polym10060606polym10060606Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered PolyimideDongliang Bian0Yun Wu1Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, ChinaInstitute of Aero-engine, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaIn this work, multi-layered polyimide (PI) films were surface fluorinated at 328 K and 0.05 MPa using F2/N2 mixture with 20% F2 by volume, for a fluorination time of 0, 30 and 60 min, respectively. Then, they were subjected to discharge plasma as barrier dielectrics of surface dielectric barrier discharge (SDBD) at ambient atmospheric air. The dielectric lifetime of SDBD greatly extends after 60 min surface fluorination. In addition, optical emission spectroscopy (OES) results indicate that during the plasma processing, SDBD with fluorinated PI can obtain more stable plasma parameters, including gas temperature and electron temperature. Dielectric surface properties were further evaluated by infrared thermography, scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). It is considered that both physical and chemical effects lead to the extension of dielectric lifetime. The physical effect is reflected in low surface temperature and increased surface roughness, while the chemical effect is reflected in the graft of fluorine groups.http://www.mdpi.com/2073-4360/10/6/606surface fluorinationSDBDdischarge characteristicmulti-layered polyimide |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Dongliang Bian Yun Wu |
spellingShingle |
Dongliang Bian Yun Wu Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide Polymers surface fluorination SDBD discharge characteristic multi-layered polyimide |
author_facet |
Dongliang Bian Yun Wu |
author_sort |
Dongliang Bian |
title |
Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide |
title_short |
Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide |
title_full |
Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide |
title_fullStr |
Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide |
title_full_unstemmed |
Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide |
title_sort |
enduring and stable surface dielectric barrier discharge (sdbd) plasma using fluorinated multi-layered polyimide |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2018-06-01 |
description |
In this work, multi-layered polyimide (PI) films were surface fluorinated at 328 K and 0.05 MPa using F2/N2 mixture with 20% F2 by volume, for a fluorination time of 0, 30 and 60 min, respectively. Then, they were subjected to discharge plasma as barrier dielectrics of surface dielectric barrier discharge (SDBD) at ambient atmospheric air. The dielectric lifetime of SDBD greatly extends after 60 min surface fluorination. In addition, optical emission spectroscopy (OES) results indicate that during the plasma processing, SDBD with fluorinated PI can obtain more stable plasma parameters, including gas temperature and electron temperature. Dielectric surface properties were further evaluated by infrared thermography, scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). It is considered that both physical and chemical effects lead to the extension of dielectric lifetime. The physical effect is reflected in low surface temperature and increased surface roughness, while the chemical effect is reflected in the graft of fluorine groups. |
topic |
surface fluorination SDBD discharge characteristic multi-layered polyimide |
url |
http://www.mdpi.com/2073-4360/10/6/606 |
work_keys_str_mv |
AT dongliangbian enduringandstablesurfacedielectricbarrierdischargesdbdplasmausingfluorinatedmultilayeredpolyimide AT yunwu enduringandstablesurfacedielectricbarrierdischargesdbdplasmausingfluorinatedmultilayeredpolyimide |
_version_ |
1724867998830821376 |