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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. Products. Csolid ligaments = the conductivity of the three-dimensional array of solid ligaments or struts that form the foam structure. This term is also often referred to as the bulk thermal conductivity of the foam. .33 = coefficient representing the foam structure geometric or tortuosity factor.