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Crystallization of Insensitive HMX
Author(s) -
Kröber Hartmut,
Teipel Ulrich
Publication year - 2008
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.200800205
Subject(s) - nucleation , crystallization , materials science , particle (ecology) , particle size , shock (circulatory) , sensitivity (control systems) , measure (data warehouse) , particle density , chemical physics , chemical engineering , thermodynamics , chemistry , physics , medicine , oceanography , database , electronic engineering , computer science , engineering , geology , volume (thermodynamics)
In this study HMX was recrystallized from different solvents by a cooling crystallization process to improve the product quality and to produce a more insensitive product. It was found that particles with the best quality were crystallized from propylenecarbonate with a nucleation initiation by dosing a small amount of water as drowning‐out substance. This leads to particles with a very high density (near to the theoretical value) and thus to particles with a small amount of inclusions. GAP tests with this product show less sensitivity against shock. A clear linear dependence of the particle density on the shock initiation pressure was found. The particle density is relatively easy to measure so it will be a useful measure to determine the sensitivity of the material.