Ultrasound enhanced 50 Hz plasma treatment of glass-fiber-reinforced polyester at atmospheric pressure

Yukihiro Kusano, Kion Norrman, Shailendra Vikram Singh, Frank Leipold, P. Morgen, A. Bardenshtein, N. Krebs

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

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.
Original languageEnglish
JournalJournal of Adhesion Science and Technology
Volume27
Issue number7
Pages (from-to)825–833
ISSN0169-4243
DOIs
Publication statusPublished - 2013

Keywords

  • Dielectric barrier discharge
  • Atmospheric pressure plasma
  • Ultrasound
  • Polyester
  • Oxidation

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