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On 15 high nitrogen and three polynitrated polyazaarenes (including six azido-derivatives), the paper demonstrates the relations between their impact sensitivities ( E dr) on the one hand and the volume heats ( ρQ max) or a representative of detonation pressure ( ρD 2) of their explosion or their enthalpies of formation ( ΔH form) on the other. The semi-logarithmic subrelations between the  E drand  ρQ maxvalues are limited by the mechanism of primary fission. While the mentioned relations between  E drand  ρQ maxvalues for azido derivatives predominantly show the expected course, in the case of the remaining high-nitrogen EMs, the opposite is the case, i.e., an increase in  ρQ maxvalues corresponds to a decrease in impact sensitivity. The same is valid for  ρD 2values as an independent variable. Taking the energy content of the studied EM molecules, represented by  ΔH formvalues, instead of the heat of explosion, yields unambiguous semilogarithmic relations, according to which the growth of the  ΔH formvalues increases impact sensitivity. The results obtained indicate that it is necessary to distinguish between the influences of the performance and the energetic content of high-nitrogen energetic materials on their initiation reactivity.

The influence of energy content and its outputs on the impact sensitivity of high-nitrogen energetic materials