Energetic materials shock sensitivity relevance to specific heat properties

Impact Shock Sensitivity of a TATB Based Explosive Relevant to Specific Heat Properties

“…This section contains excerpts from similar sections in References [1] and [3], which should be consulted for additional details.…”

“…It was shown in References [1] and [3] that the magnitude of the average C P per atom at a given temperature for seven explosives did not differ very much from each other. The reaction temperatures, T R , for these explosives did differ considerably, but m AV values for these explosives were very similar.…”

“…This Δ (v.e.) TR concept, that impact shock sensitivity or shock induced reactivity of energetic materials could be related to their specific heat (C P ) variation with temperature, was demonstrated in References [1] and [2] for RDX, TETRYL, PETN, TNT, and TATB, which are basic secondary reactive compounds.…”

“…TR as defined by Equations (3) and (4) is actually an enthalpy increment (ΔH). However, it was shown via numerical examples in Appendix B of Reference [1] that, under the experimental C P acquisition conditions, the pressure times volume terms were minute compared to the C P integral, ∫ Once Δ (v.e.) TR and CR P U values are computed, the corresponding shock velocity ) (U CR S is ascertained from experimental data for U S as a function of the particle velocity, U P .…”

“…This is a good mnemonic reference level for comparison purposes. It was noted in Reference [1] that the average C P per atom for most polymers never reaches the 3 k B level before a reaction (phase change, melting, glass-to-rubber transition, or even detonation) occurs.…”