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DAPO‐LLM‐105: Improving the Particle Morphology and Thermal Stability
Author(s) -
Pasquinet Eric,
Pin Nicolas,
Forzy Alexandre,
Palmas Pascal,
Rideau Joël,
Beaucamp Arnaud,
Lalière Eric,
Perdrigeat MarieL.,
Quéré Stéphane,
Barthet Christelle,
Wuillaume Anne
Publication year - 2019
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.201800151
Subject(s) - nitration , potassium nitrate , thermal stability , materials science , ammonium nitrate , recrystallization (geology) , chemical engineering , particle size , oxide , aqueous solution , chemistry , potassium , organic chemistry , metallurgy , paleontology , engineering , biology
A number of different quench media were evaluated in order to improve the characteristics of 2,6‐diamino‐3,5‐dinitropyrazine‐1‐oxide (LLM‐105) obtained via nitration of 2,6‐diaminopyrazine‐1‐oxide (DAPO). After a first screening phase, seven aqueous solutions containing a selected additive were used to quench the nitrating mixture in scale‐up experiments. Complete characterization of the resulting LLM‐105 indicated that nitrate salts as additives, especially ammonium and potassium nitrate, provided a high quality product, without requiring any further recrystallization. Notably, both particle morphology and thermal stability were significantly improved over the ones obtained using the standard pure water quench. This new DAPO‐LLM‐105 has been compared to the conventional DMP‐LLM‐105 and showed similar characteristics with even better insensitivity data.