Nanocrystallisation of Ammonium DiNitramide (ADN) by Spray Flash Evaporation (SFE)

Ammonium DiNitramide (ADN) is an interesting oxidizer to replace ammonium perchlorate in the composition of solid propellants. In this study, Spray Flash Evaporation (SFE) is presented as a new technology to enhance stability of ADN by crystallization of nanoparticles. The crystallinity and purity o...

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Bibliographic Details
Published inPropellants, explosives, pyrotechnics Vol. 43; no. 6; pp. 609 - 615
Main Authors Berthe, Jean‐Edouard, Schnell, Fabien, Boehrer, Yannick, Spitzer, Denis
Format Journal Article
LanguageEnglish
Published Weinheim Wiley Subscription Services, Inc 01.06.2018
Wiley-VCH Verlag
Subjects
Ammonium Dinitramide
Chemical engineering
Chemical Sciences
Crystallization
Desensitization
Detonation
Downsizing
Ethyl acetate
Evaporation
Moisture absorption
nano-crystallization
New technology
Relative humidity
sensitivity
Solid propellants
Spray Flash Evaporation
X-ray diffraction
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Summary:Ammonium DiNitramide (ADN) is an interesting oxidizer to replace ammonium perchlorate in the composition of solid propellants. In this study, Spray Flash Evaporation (SFE) is presented as a new technology to enhance stability of ADN by crystallization of nanoparticles. The crystallinity and purity of the compound was confirmed by X‐Ray Diffraction and Raman analysis. An average diameter of spherical particles around 32 nm (solution of ethyl acetate) and 34 nm (solution of methyl acetate) was measured by Scanning Electronic Microscopy (SEM). Furthermore, the downsizing to nanoscale induces a slower moisture absorption kinetic under 55 % of relative humidity, a reduction of the critical diameter of detonation and the desensitization to impact.
ISSN:0721-3115
1521-4087
DOI:10.1002/prep.201800039