Figure 8.
Permittivity spectra of lab-made monolithic polyurethane, ρp = 1280 kg/m3: (a) εt, (b) εT at PTFE film 0.20 mm, (c) εT at PTFE film 0.04 mm, (d) εT′ at PTFE film 0.20 mm and (e) εT′ at PTFE film 0.04 mm.
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