Preparation of Nano-Structured RDX in a Silica Xerogel Matrix

RDX is preferred as explosive in munitions due to its balance of power and sensitivity that is known to be dependent on its particle size and size distribution. In this study, we prepared nano‐sized RDX in a silica xerogel matrix using a sol‐gel method and investigated its sensitivity for explosive...

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Published in:Propellants, explosives, pyrotechnics explosives, pyrotechnics, 2013-08, Vol.38 (4), p.515-519
Main Authors: Ingale, Sanjay V., Umamaheswara Sastry, Pulya, Wagh, Pratap B., Tripathi, Arvind K., Tewari, Raghvendra, Jayakrishnan, Vaisyappattu B., Phapale, Suhas B., Rao, Pandugula T., Wasnik, Rajbal D., Bhattacharya, Bikas, Gupta, Satish C.
Format: Article
Language:English
Subjects:
Explosives
Nanocomposites
Nanocrystalline
Nanomaterials
Nanostructure
RDX
Silicon dioxide
Sol-gel
Transmission electron microscopy
Xerogels
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Summary:RDX is preferred as explosive in munitions due to its balance of power and sensitivity that is known to be dependent on its particle size and size distribution. In this study, we prepared nano‐sized RDX in a silica xerogel matrix using a sol‐gel method and investigated its sensitivity for explosive properties. The presence of RDX in composite xerogel was confirmed by TG‐DSC and FTIR techniques. Microstructure and porosity were characterized by transmission electron microscopy (TEM), small angle X‐ray scattering, and N2‐physisorption techniques. TEM results showed that the size of RDX particles in the RDX‐silica composites is in the range of 10–30 nm. The sensitivity to impact and friction was found to be higher for the composites compared to raw RDX. It was also found to be significantly dependent on the acetone/TMOS ratio used in the preparation.
ISSN:0721-3115
1521-4087
DOI:10.1002/prep.201100160