Properties of shock-compressed carbogal. Equations of state for Carbogal and Plexiglas

This paper presents results from experimental studies of the properties of Carbogal (C$_8$F$_{16}$ or perfluoro-1,3-dimethylcyclohexane), at high pressures and temperatures, in particular, data on single compression and recompression, temperatures, and velocity of sound. Data are given on shock-wave compressibility of porous Plexiglas with an initial density 10–60 times lower than the density of the solid sample. Thermodynamically complete equations of state for Carbogal and Plexiglas are developed on the basis of a model published previously and well-known experimental data. It is shown that calculations using the developed equations of state are in agreement with available experimental data for Carbogal up to pressures of $\approx$70 GPa and for Plexiglas over the entire examined range of pressures.