Abstract
Glass-fiber-reinforced polyester (GFRP) plates are treated using a 50 Hz 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 mJ m-2 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.
| Original language | English |
|---|---|
| Pages (from-to) | 825-833 |
| Number of pages | 9 |
| Journal | Journal of Adhesion Science and Technology |
| Volume | 27 |
| Issue number | 7 |
| DOIs | |
| State | Published - 1 Apr 2013 |
| Externally published | Yes |
Bibliographical note
Funding Information:This work is supported by a grant from the Proof of Concept Fund (07-017766). Søren Nimb is gratefully acknowledged for the design and construction of the gliding arc source.
Keywords
- atmospheric pressure plasma
- dielectric barrier discharge
- oxidation
- polyester
- ultrasound
ASJC Scopus subject areas
- General Chemistry
- Mechanics of Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry
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