The dielectric properties of unsaturated polyester resins mixed with styrene have been investigated in the microwave 1-12 GHz range. The frequency dependence of the permittivity (e~ and ~:'/) is typical of an orientational polarization relaxation process. A Davidson-Cole like model fits the experime
Dielectric properties of polyester resins—II. Chemical structure dependence of microwave dielectric relaxation of liquid resins
✍ Scribed by F. Legros; A. Fourrier-Lamer; D. Le Pen; A. Gourdenne
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 251 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0014-3057
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✦ Synopsis
The dielectric response of various unsaturated polyester resin/styrene systems has been studied in the microwave 2 12 GHz range. The effects of temperature on the observed dielectric polarization relaxation processes have been analyzed in the 292 k 338 K domain. Comparisons taking into account the chemical structure of the compounds, the analytical description of the spectra and the physical significance of the most probable best fitting model have lead to general correlations in terms of dipolar structure and interactions.
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A broadband (five decades of frequency) study of the dielectric properties of unsaturated polyester chains/styrene systems has been carried out between 50Hz and 5MHz (T = 252 K). An analytical deconvolution of dispersion and absorption is performed, thus allowing an accurate separation of the variou
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