Open AccessThe influence of energy content and its expenditure on the impact sensitivity of high-nitrogen energetic materials
Author(s) -
Svatopluk Zeman
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1507/2/022001
Subject(s) - detonation , nitrogen , standard enthalpy of formation , sensitivity (control systems) , chemistry , thermodynamics , fission , content (measure theory) , volume (thermodynamics) , reactivity (psychology) , logarithm , mathematics , physics , nuclear physics , organic chemistry , medicine , mathematical analysis , alternative medicine , pathology , electronic engineering , neutron , engineering , explosive material
On 17 high-nitrogen energetic materials (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 dr and ρQ max values are limited by the mechanism of primary fission. While the mentioned relations between E dr and ρQ max values 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 max values corresponds to a decrease in impact sensitivity. The same is valid for ρD 2 values as an independent variable. Taking the energy content of the studied EM molecules, represented by ΔH form values, instead of the heat of explosion, yields unambiguous semilogarithmic relations, according to which the growth of the ΔH form values 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.