Heat of detonation of 2,4,6-triamino-1,3,5-trinitrobenzene (TATB) as a function explosive density

The detonation product equation of state (EOS) describes the transfer of energy from detonation products to adjacent materials. Because most interest is on the expansion Pressure – Volume (P-V) work that the products does on the surroundings, the EOS is shown as P-V curve describing product expansion from the detonation state along a specified adiabat. Currently, the product EOS is measured experimentally using three tests that cover the volume expansion range of interest: (1) Disc Acceleration eXperiment (DAX), (2) the cylinder test, and (3) detonation calorimetry. These techniques directly probe small, moderate, and large volume expansions, respectively. Here, this work will present detonation calorimeter results for neat 2,4,6-triamino-1,3,5-trinitrobenzene (TATB) as a function of charge density. The explosives configuration (heavy confinement) is deliberate to enable interrogation of the C-J adiabat. Finally, the precision of the instrument will be discussed and how this impacts uncertainty in the EOS fits.