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The Kinetics of Detonation of Nitroguanidine
Author(s) -
Leiper G. A.,
Cooper J.
Publication year - 1997
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.19970220609
Subject(s) - detonation , explosive material , kinetics , thermodynamics , crystal (programming language) , materials science , chemistry , kinetic energy , physics , organic chemistry , classical mechanics , computer science , programming language
Abstract A slightly divergent flow detonation model has been used to model previously published charge diameter data for nitroguanidine. The kinetic form at low density is shown to be of the hot spot/grain burning type. At higher densities the kinetics become progressively thermal explosion in form. The kinetics are discussed in terms of the pressure dependent rate law used in the model and models of hot spot formation in powder explosives. The particular crystal size and form of nitroguanidine used shows characteristics which suggest it to be of the type described by Price as Group 2 at low density but to show a change to Group 1 type behaviour at higher density. The analysis suggests reasons for this and for the observation that an alternative crystal size and form appears to show only Group 1 characteristics.