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Free-Flowing Polymer-Bonded Powder Composition of Hexahydro-1,3,5-trinitro-1,3,5-triazine Using Solvent-Slurry
Muhammad Soulaman Khan1, Muhammad Ahsan1, Sarah Farrukh1
1School of Chemical and Materials Engineering, National University of Sciences and Technology, Islamabad 44000, Pakistan.
Solvent-slurry coating optimizes polymer-bonded explosives, enhancing hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) powder flowability and hydrophobicity. This improved processability is crucial for developing advanced explosive compositions, including those for underwater applications.
Area of Science:
- Materials Science
- Chemical Engineering
- Energetic Materials
Background:
- Improving the processability of high explosives is critical for developing effective compositions like boosters and fillers.
- Solvent-slurry coating is a widely adopted technique for industrializing polymer-bonded explosives.
Purpose of the Study:
- To optimize the NUPC-6 polymer-bonded powder composition of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) using the solvent-slurry coating technique.
- To evaluate the impact of phlegmatizing and hydrophobic agents on the flowability and properties of the RDX composition.
Main Methods:
- Preparation of an RDX slurry in an aqueous phase.
- Dissolution of a modified polymer binder in an organic solvent.
- Controlled temperature maintenance, solvent distillation, homogeneous mixing, filtration, and vacuum drying.
- Modification of the polymer binder using diisooctylsebacate and SAE-10 oil.
- Assessment of flowability using mass flow rate, bulk density, tapped density, compressibility index, and Hausner ratio.
Main Results:
- The optimized NUPC-6 composition demonstrated enhanced flowability, suitable for filling operations using a standard funnel.
- Phlegmatizing and hydrophobic agents significantly improved the powder's flowability and hydrophobicity.
- The modified polymer binder contributed to the enhanced properties of the explosive composition.
Conclusions:
- The solvent-slurry coating technique effectively optimizes polymer-bonded RDX compositions for improved processability.
- The enhanced flowability and hydrophobicity make the composition suitable for demanding applications, potentially including underwater use.
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