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The Decomposition of some RDX and HMX Based Materials in the One‐Dimensional Time to Explosion Apparatus. Part 1. Time to Explosion and Apparent Activation Energy
Author(s) -
Williams Michael Robert,
Matei Mariana Violetta
Publication year - 2006
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.200600058
Subject(s) - activation energy , kinetic energy , energetic material , ignition system , thermodynamics , thermal decomposition , kinetics , exponential function , materials science , range (aeronautics) , autoignition temperature , decomposition , chemistry , mechanics , explosive material , composite material , physics , organic chemistry , mathematics , classical mechanics , mathematical analysis
A One‐Dimensional Time to Explosion (ODTX) apparatus has been used to study the times to explosion of a number of compositions based on RDX and HMX over a range of contact temperatures. The times to explosion at any given temperature tend to increase from RDX to HMX and with the proportion of HMX in the composition. Thermal ignition theory has been applied to time to explosion data to calculate kinetic parameters. The apparent activation energy for all of the compositions lay between 127 kJ mol −1 and 146 kJ mol −1 . There were big differences in the pre‐exponential factor and this controlled the time to explosion rather than the activation energy for the process.