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Relative thermal conductivity of the foams under study as a function of the relative density. The curve fit is Equation (6), where ξ1 = 0.99 ± 0.05 is the contribution of the polymer and ξ2 = 0.15 ± 0.08 is the contribution of the gas phase, the power is n = 1.6 ± 2 and the R2 = 0.9016.
