Table 10 The values of a, b, and c in Eq. (17).

X_c−CF/PEEK

\({\text{32}}{\text{0.04993\,+\,0}}{\text{0.06937}} \times T\)

\(-10.42242 + 00.01861 \times T\)

\(- 1700.85353 + 00.48618 \times T\)

0.955

E₁

\({\text{135}}{\text{0.28579\,+\,0}}{\text{0.00168}} \times T\)

\(- 00.15358 + 00.0008245 \times T\)

\(940.42056 - 00.12861 \times T\)

0.994

E₂ = E₃

\({\text{5}}{\text{0.50537\,+\,0}}{\text{0.00735}} \times T\)

\(- 00.58904 + 00.0028 \times T\)

\(740.23393 - 00.06582 \times T\)

0.987

v₁₂ = v₁₃

\({\text{0}}{\text{0.17005\,+\,0}}{\text{0.00010325}} \times T\)

\(- 00.00856 - 00.0000155 \times T\)

\(130.43715 - 00.01333 \times T\)

0.994

v₂₃

\({\text{0}}{\text{0.20922\,+\,0}}{\text{0.00008025}} \times T\)

\(- 00.00926 - 00.000053 \times T\)

\(130.91789 - 00.00381 \times T\)

0.996

G₁₂ = G₁₃

\({\text{3}}{\text{0.94174\,+\,0}}{\text{0.00181}} \times T\)

\(- 00.16807 + 00.00103 \times T\)

\({\text{13}}{\text{0.54234\,+\,0}}{\text{0.03194}} \times T\)

0.972

G₂₃

\({\text{2}}{\text{0.32909\,+\,0}}{\text{0.00217}} \times T\)

\(- 00.18538 + 00.0009905 \times T\)

\({\text{27}}{\text{0.97381\,+\,0}}{\text{0.01458}} \times T\)

0.978

σ_b1

\(22430.92875 - 00.0953 \times T\)

\(50.69706 - 00.0026 \times T\)

\({\text{7}}{\text{0.55515\,+\,0}}{\text{0.04046}} \times T\)

0.963

σ_b2 = σ_b3

\(880.37824 + 00.09725 \times T\)

\(- 50.82603 + 00.04211 \times T\)

\(- 670.11899 + 00.24 \times T\)

0.995

τ₂₃

\(1510.53084 - 00.03582 \times T\)

\(20.01964 + 00.02707 \times T\)

\(- 340.33419 + 00.12979 \times T\)

0.984