A recommended approach for supplying the thermophysical properties needed by thermal performance models is the following:
1) density − determine density via the concurrent measurement of mass and dimensional changes using thermogravimetric and thermal expansion measurements,
2) heat capacity − determine heat capacity as a function of temperature
using the largest readily available sample cell and a STA unit, and following
the ASTM E1269 protocols,2
3) enthalpies of reaction − compute enthalpies based on the mass loss (TGA) measurement and the calculated enthalpies of reaction based on a detailed knowledge of the FRM and its thermal decomposition (these calculations can be critically examined by comparison with analysis of the endotherms and exotherms in the STA results), and
4) thermal conductivity − supplement direct "low" temperature thermal conductivity measurements with detailed characterization of the microstructure of the FRM (porosity and pore size) and application of the theory of Russell (or other equivalent) to provide high temperature estimates.