Ceramics-Silikáty 52, (3) 148 - 154 (2008) |
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HIGH-TEMPERATURE VISCOSITY AND DENSITY OF ALUMINO-BOROSILICATE GLASSES AS A MODEL SYSTEM FOR COMMERCIAL E-GLASS
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Kraxner Jozef, Klement Róbert, Liška Marek
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Vitrum Laugaricio - Joint Glass Centre of the Institute of Inorganic Chemistry,
Slovak Academy of Sciences, Alexander Dubček University of Trenčín and RONA, a.s.,
Študentská 2, Trenčín, SK- 911 50, Slovak Republic
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Keywords: High temperature viscosity, Density, E-glass, Fibre glass
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High temperature viscosity and density of glass melts in the system MgO–CaO–B₂O₃–Al₂O₃–SiO₂ with composition close
to the E-glass were measured and interpreted with respect to the effect of oxides content on their physical properties.
The Andrade model was applied for description of the temperature dependence of the glass viscosity within studied temperature
range. The regression formulae describing the compositional dependence of the viscosity points T₂ = T(η = 10² dPa.s),
T₃ = T(η = 10³ dPa.s), T₄ = T(η = 10⁴ dPa.s) and molar volume of glass melts and glasses were proposed. |
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