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. 2021 Apr 6;13(7):1173. doi: 10.3390/polym13071173

Table 1.

Data of the permittivity spectra εt, εT and εT′.

N Materials Single Samples PTFE Film Coverage PTFE Film Coating (Simul.)
0.20 mm 0.04 mm 0.20 mm 0.04 mm
ρ;kg/m3 ηg;% εt ± U95% φ0;% εT ηTaver;% εT ηTaver;% εT′ ηT′aver;% εT′ ηT′aver;%
(1) PTFE
1 PTFE; h = 14.37 mm 2 158 0 2.10 ± 0.01 0.4 2.08 0.8 2.09 0.3 1.96 6.5 2.07 1.4
(2) Lab-made petrochemical PUR foams
1 PUR foams 84 93 1.14 ± 0.011 0.8 1.19 −4.0 1.15 −0.4 1.11 2.8 1.13 0.8
2 PUR foams 112 91 1.20 ± 0.010 1.2 1.23 −3.1 1.20 −0.6 1.16 3.1 1.19 0.5
3 PUR foams 144 89 1.26 ± 0.011 1.4 1.31 −3.7 1.27 −0.9 1.22 3.5 1.26 0.4
4 PUR foams 279 78 1.50 ± 0.013 2.6 1.55 −2.1 1.50 0.1 1.42 5.5 1.49 1.1
5 PUR foams 427 67 1.84 ± 0.010 3.2 1.83 0.5 1.83 0.4 1.71 6.6 1.81 1.3
6 PUR foams 539 58 2.12 ± 0.021 3.5 2.09 1.7 2.11 0.5 1.91 10.1 2.09 1.6
7 PUR foams 846 34 2.61 ± 0.019 3.5 2.48 5.0 2.58 1.2 2.33 11.0 2.56 2.2
8 Monol. PUR 1280 0 3.64 ± 0.015 2.8 3.37 7.3 3.59 1.2 3.17 14.0 3.55 3.2
(3) Lab-made PUR biofoams
1 PUR biofoams 84 93 1.13 ± 0.014 1.1 1.18 −4.3 1.13 −0.5 1.09 3.1 1.12 0.5
2 PUR biofoams 111 91 1.22 ± 0.012 1.3 1.26 −3.2 1.22 −0.4 1.17 3.8 1.21 0.7
3 PUR biofoams 144 89 1.23 ± 0.010 1.7 1.27 −3.1 1.23 −0.2 1.17 4.7 1.22 0.8
4 PUR biofoams 290 77 1.61 ± 0.016 3.2 1.60 0.4 1.60 0.3 1.48 7.3 1.58 0.9
5 PUR biofoams 366 71 1.74 ± 0.021 3.9 1.73 0.7 1.73 0.5 1.62 6.5 1.71 1.6
6 PUR biofoams 442 65 1.95 ± 0.027 4.5 1.93 1.6 1.96 0.4 1.78 9.5 1.93 1.7
(4) Sika JSC, petrochemical PUR foams
1 Sika-80 85 93 1.14 ± 0.011 1.5 1.20 −4.9 1.15 −0.5 1.11 2.6 1.13 0.6
2 Sika-150 144 88 1.26 ± 0.011 2.2 1.31 −3.7 1.27 −1.0 1.23 2.8 1.25 0.6
3 Sika-240 228 81 1.42 ± 0.010 3.0 1.45 −2.2 1.42 −0.1 1.36 3.9 1.40 1.1
4 Sika-450 459 61 1.95 ± 0.014 4.0 1.92 1.5 1.93 1.1 1.80 7.8 1.91 1.8
5 Sika-600 554 53 2.09 ± 0.015 4.1 2.05 1.9 2.08 0.8 1.93 7.7 2.05 1.9
6 Sika-700 720 39 2.59 ± 0.018 3.9 2.49 3.8 2.55 1.6 2.34 9.8 2.55 1.7
7 Sika-930 993 16 3.13 ± 0.019 3.3 2.98 4.9 3.11 1.0 2.84 9.3 3.06 2.5
8 Sika-1000 1 025 13 3.26 ± 0.021 3.3 3.06 5.9 3.21 1.2 2.88 11.3 3.17 2.6
9 Monol. PUR M-960 1 181 0 3.78 ± 0.013 2.8 3.51 7.1 3.73 1.3 3.26 13.6 3.70 2.4
(5) General Plastics Manufacturing Company , petrochemical PUR foams
1 FR-3703 48 96 1.08 ± 0.011 0.7 1.14 −5.2 1.09 −0.6 1.08 0.9 1.08 0.5
2 FR-4305 80 94 1.14 ± 0.010 1.2 1.20 −4.4 1.15 −0.4 1.12 1.7 1.14 0.7
3 FR-3707 112 92 1.20 ± 0.012 1.5 1.24 −3.6 1.20 −0.2 1.17 2.3 1.19 0.9
4 FR-4315 227 83 1.42 ± 0.010 2.7 1.45 −2.1 1.42 0.1 1.37 3.9 1.41 1.1
5 FR-7120 320 76 1.60 ± 0.011 3.5 1.61 −0.7 1.59 0.4 1.51 5.2 1.58 1.4