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Glass is far inferior to paper, plastic and Styrofoam in terms of insulation. Thermal conductivity in terms of BTU/(feet - hour - degrees F) is 1.82 for glass, 0.09 for paper, 0.06 for Styrofoam. The conductivity of plastics varies depending on the materials: for polypropylene and polycarbonate, the thermal conductivity values are 0.69 and 0.35, respectively.
Thermal conductivity 1. Thermal conductivity. In physics, thermal conductivity, is the , property of a material's ability to conduct heat. It appears primarily in. Fourier's Law for heat conduction. Thermal conductivity is measured in watts per kelvin-meter (WÂ·Kâ1Â·mâ1, i.e. W/(KÂ·m) or in IP units (BtuÂ·hrâ1Â·ftâ1Â·Fâ1, i.e. Btu/(hrÂ·ftâF).