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The Preparation and Properties of Submicrometer‐Sized N‐Amino‐2,4‐dinitroimidazole (ADNI): A Novel and Promising Initiating Explosive for Applications in Short Pulse Initiation Slapper Detonators
Author(s) -
Qu Yanyang,
Wang Jun,
Lu Huangchang,
Gong Feiyan,
Fan Guijuan,
Wang Jun,
Yang Guangcheng
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201702576
Subject(s) - explosive material , detonator , detonation , micrometer , materials science , shock wave , impulse (physics) , analytical chemistry (journal) , chemistry , physics , optics , mechanics , chromatography , organic chemistry , quantum mechanics
We describe for the first time a spray‐recrystallization method to prepare sub‐micrometer N‐amino‐2,4‐dinitroimidazole (ADNI) and test its critical diameters below 3 mm. The uniform sub‐micrometer ADNI has better sensitivity to short impulse shock waves with the 50% and 99.9% initiation currents at 2.45 kA and 2.67 kA, respectively, which is much better than sub‐micrometer LLM‐105 (3.11 kA and 3.46 kA, respectively) and DAAF (3.7 kA and 4.75 kA, respectively). The detonation velocity for ADNI (7.8 km⋅s −1 at a density of 1.67 g⋅cm −3 ) is greater than that of LLM‐105 (7.54 km⋅s −1 at the density of 1.63 g⋅cm −3 ) and haxanitrostilbene (HNS) (6.8 km⋅s −1 ). ADNI also has a higher decomposition temperature ( T d =265.8 °C) and a better thermal stability (5S shotpoint of 312 °C) with low impact, friction, and electric spark sensitivities (>40 N, >360 N, and 2.20 J). These metrics are comparable to LLM‐105 (0–30 N, >360 N, and 1.02 J) and HNS (26 N, 240 N, and 1.77 J). The high stability and good detonation properties of sub‐micrometer ADNI clearly shows that it is insensitive to impact stimulus and long pulse stimulation, while also being sensitive to short impulse shock waves. This suggests that it is a promising initiating explosive for slapper detonators.