Abstract
Preliminary results on physical characteristics of pulsed underwater diaphragm electrical discharges are presented. The discharges burning in tap water, water-chelaton solutions, and some other water-based solutions were studied as a potential atmospheric-pressure H2O-plasma source for surface activation of polyester cord threads. The discharge plasma parameters have been measured by means of optical emission spectroscopy. Electron number density of roughly 2 x 10(8) cm(-3) and an electron temperature of 1x10(4) K were estimated from broadening of hydrogen lines (Halpha), and vibrational temperature of 2500 K was determined from the vibrational band of nitrogen. A significant increase in the surface energy and wettability of the cord threads due to the plasma treatment was obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 491-500 |
| Number of pages | 10 |
| Journal | Czechoslovak Journal of Physics |
| Volume | 52 |
| Publication status | Published - 2002 |
Keywords
- underwater discharge
- H2O plasma
- surface treatment
- polyester cord
- WATER