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http://dx.doi.org/10.14478/ace.2017.1002

Preparation of Al/RDX/AP Energetic Composites by Drowning-out/Agglomeration and Their Thermal Decomposition Characteristics  

Lee, Jeong-Hwan (Department of Chemical and Biomolecular Engineering, Sogang University)
Shim, Hong-Min (Department of Chemical and Biomolecular Engineering, Sogang University)
Kim, Jae-Kyeong (Department of Chemical and Biomolecular Engineering, Sogang University)
Kim, Hyoun-Soo (Agency for Defense Development)
Koo, Kee-Kahb (Department of Chemical and Biomolecular Engineering, Sogang University)
Publication Information
Applied Chemistry for Engineering / v.28, no.2, 2017 , pp. 214-220 More about this Journal
Abstract
The spherical Al/RDX/AP composites with an average size of $550{\mu}m$ were successfully prepared by drowning-out/agglomeration (D/A) process. The surface morphology and dispersion of Al particles of those composites were investigated using SEM and EDS (energy dispersive spectrometry). As a result of thermal analysis, the onset temperature of thermal decomposition of the Al/RDX/AP composites by the D/A process was found to decrease about $50^{\circ}C$ and their thermal stability was shown to be relatively enhanced due to the increase of activation energy compared to those of using the physical mixing method. In the first decomposition region of AP, Prout-Tompkins model was shown to describe well the thermal decomposition of both composites by the physical mixing and D/A process. On the other hand, in the second decomposition region of AP, the decomposition mechanisms of composites by the physical mixing and D/A process were explained by the zero-order and contracting volume model, respectively.
Keywords
ammonium perchlorate (AP); RDX; thermal decomposition; crystallization;
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