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Preparation of Nano‐DAAF Explosive with Improved Initiation Sensitivity
Author(s) -
Wang Jun,
Qu Yanyang,
Wang Yao,
Zhang Long,
Qiao Zhiqiang
Publication year - 2018
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.201800096
Subject(s) - materials science , explosive material , differential scanning calorimetry , nano , scanning electron microscope , deflagration , crystallization , chemical engineering , nanoparticle , detonation , analytical chemistry (journal) , nanotechnology , composite material , chemistry , thermodynamics , chromatography , physics , organic chemistry , engineering
3,3′‐diamino‐4,4′‐zoxyfurazan (DAAF) shows fascinating properties and can be practically applied in explosives and solid rocket propellants. Nano‐sized DAAF explosive particles were prepared by a low‐temperature and rapid crystallization process to improve energetic performance. The diameter and morphology of DAAF nanoparticles were characterized by Field emission scanning electron microscopy (FE‐SEM), Atomic force microscopy (AFM) and X‐ray diffraction (XRD). Nano‐DAAF shows irregular spherical nano‐particles with the diameter ranging from 50 to 100 nm. The size and morphology of nano‐DAAF particles can be tuned by temperature difference and DAAF concentration of crystallization process. The thermal properties were also investigated by Differential scanning calorimetry (DSC). For nano‐sized DAAF shows significantly decreased exothermal peak (259.3 °C) and enhanced energy release rate. Deflagration and short impulse shock waves experiments illustrated that nano‐DAAF explosive shows significantly improved initiation sensitivity compared to micro‐particles.