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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.28 SNIP: 0.421 CiteScore™: 0.9

ISSN Imprimir: 2150-766X
ISSN On-line: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2013008248
pages 411-428

COMPACTION PROPERTIES OF DIAMINOAZOXY FURAZAN (DAAF): A SMALL-ANGLE NEUTRON SCATTERING STUDY

Joseph T. Mang
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
Elizabeth G. Francois
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
Stephanie I. Hagelberg
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA

RESUMO

Small-angle neutron scattering measurements were performed on the high explosive diaminoazoxy-furazan (DAAF) in order to quantify the void size and morphology as a function of the pressed density and the pre-pressed grain size. DAAF synthesized by different methods, resulting in volume-weighted mean grain sizes (radii) of 45,18, and 4 µm, was studied at pressed densities ranging from 1.583 to 1.682 g/cm3. The void volume is well described as a fractal network of voids with fractally rough interfaces. The mean void size, volume, and surface fractal dimensions were found to be dependent upon the pressed density. Mean void sizes ranged from 0.059 to 0.195 µm, but were correlated over lengths ranging from 2.1 to >9 µm. Volume fractal dimensions ranged between 2.13 and 2.78 and surface fractal dimensions were between 2.061 and 2.589. Methods are discussed by which the mean particle size and crystal density within a pressed sample can be calculated from the small-angle neutron scattering data.

Palavras-chave: DAAF, porosity, fractal, SANS

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