Table 1 Regression coefficients of the cubic order models to predict the dielectric constant of RB as a function of MC (10–25% w.b.) and temperature (25–100 °C).
Regression coefficients in Eq. (3) | Regression coefficients at five selected frequencies | ||||
|---|---|---|---|---|---|
13.56 MHz | 27.12 MHz | 40.68 MHz | 915 MHz | 2450 MHz | |
α 0 | −23.15 | −16.45 | −14.84 | −6.71 | −8.86 |
α 1 | 7.36*1 | 5.22* | 4.50* | 1.36* | 1.90* |
α 2 | −0.61* | −0.40* | −0.28* | 0.14* | 0.10* |
α 12 | 8.52 × 10−3* | 9.06 × 10−3* | 5.74 × 10−3* | −6.44 × 10−3* | −3.72 × 10−3* |
α 11 | −0.50* | −0.35* | −0.30* | –0.08* | −0.12* |
α 22 | 7.14 × 10−3* | 4.38 × 10−3* | 3.07 × 10−3* | −1.79 × 10−3* | −1.50 × 10−3* |
α 112 | 4.91 × 10−4 | 2.21 × 10−4 | 1.90 × 10−4 | 1.43 × 10−5 | 7.98 × 10−5 |
α 122 | 1.91 × 10−5 | 1.18 × 10−5 | 2.58 × 10−5 | 9.15 × 10−5 | 5.23 × 10−5 |
α 111 | 0.01 | 7.30 × 10−3 | 6.24 × 10−3 | 1.83 × 10−3 | 2.50 × 10−3 |
α 222 | −2.25 × 10−5 | −1.30 × 10−5 | −8.94 × 10−6 | 5.91 × 10−6 | 7.15 × 10−6 |
Model | * | * | * | * | * |
R 2 | 0.994 | 0.995 | 0.996 | 0.995 | 0.998 |
