Journal article
Ultrasound enhanced 50 Hz plasma treatment of glass-fiber-reinforced polyester at atmospheric pressure
Department of Wind Energy, Technical University of Denmark1
Composites Mechanics and Materials Mechanics, Department of Wind Energy, Technical University of Denmark2
Department of Energy Conversion and Storage, Technical University of Denmark3
Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark4
Department of Physics, Technical University of Denmark5
Plasma Physics and Fusion Energy, Department of Physics, Technical University of Denmark6
University of Southern Denmark7
Danish Technological Institute8
FORCE Technology9
Glass-fiber-reinforced polyester (GFRP) plates are treated using a 50Hz dielectric barrier discharge at a peak-to-peak voltage of 30 kV in helium at atmospheric pressure with and without ultrasonic irradiation to study adhesion improvement. The ultrasonic waves at the fundamental frequency of around 30 kHz with the sound pressure level of approximately 155 dB were introduced vertically to the GFRP surface through a cylindrical waveguide.
The polar component of the surface energy was almost unchanged after the plasma treatment without ultrasonic irradiation, but drastically increased approximately from 20 up to 80 mJm2 with ultrasonic irradiation. The plasma treatment with ultrasonic irradiation also introduced oxygen- and nitrogen-containing functional groups at the GFRP surface.
These changes would improve the adhesion properties of the GFRP plates.
| Language: | English |
|---|---|
| Publisher: | Routledge |
| Year: | 2013 |
| Pages: | 825-833 |
| ISSN: | 15685616 and 01694243 |
| Types: | Journal article |
| DOI: | 10.1080/01694243.2012.727156 |
| ORCIDs: | Norrman, Kion and Leipold, Frank |
