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Article

Preparation and Characterization of Al/HTPB Composite for High Energetic Materials

1
National Research Tomsk State University, Lenin Avenue, 36, Tomsk 634050, Russia
2
Institute of Physics Strength and Material Science SB RAS, Avenue Akademicheskii, 2/4, Tomsk 634055, Russia
3
Department of Aerospace Science and Technology, Politecnico di Milano, 34 via LaMasa, I-20156 Milan, Italy
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(11), 2222; https://doi.org/10.3390/nano10112222
Received: 13 October 2020 / Revised: 1 November 2020 / Accepted: 6 November 2020 / Published: 8 November 2020
(This article belongs to the Special Issue Nanoenergetic Materials: Preparation, Properties, and Applications)
Nanosized Al (nAl) powders offer increased reactivity than the conventional micron-sized counterpart, thanks to their reduced size and increased specific surface area. While desirable from the combustion viewpoint, this high reactivity comes at the cost of difficult handling and implementation of the nanosized powders in preparations. The coating with hydroxyl-terminated polybutadiene (HTPB) is proposed to improve powder handling and ease of use of nAl and to limit its sensitivity to aging. The nAl/HTPB composite can be an intermediate product for the subsequent manufacturing of mixed high-energy materials while maintaining the qualities and advantages of nAl. In this work, experimental studies of the high-energy mixture nAl/HTPB are carried out. The investigated materials include two composites: nAl (90 wt.%) + HTPB (10 wt.%) and nAl (80 wt.%) + HTPB (20 wt.%). Thermogravimetric analysis (TGA) is performed from 30 to 1000 °C at slow heating rate (10 °C/min) in inert (Ar) and oxidizing (air) environment. The combustion characteristics of propellant formulations loaded with conventional and HTPB-coated nAl are analyzed and discussed. Results show the increased burning rate performance of nAl/HTPB-loaded propellants over the counterpart loaded with micron-sized Al. View Full-Text
Keywords: HTPB; aluminum nanopowders; solid propellants; burning rate; coated aluminum HTPB; aluminum nanopowders; solid propellants; burning rate; coated aluminum
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MDPI and ACS Style

Vorozhtsov, A.; Lerner, M.; Rodkevich, N.; Sokolov, S.; Perchatkina, E.; Paravan, C. Preparation and Characterization of Al/HTPB Composite for High Energetic Materials. Nanomaterials 2020, 10, 2222. https://doi.org/10.3390/nano10112222

AMA Style

Vorozhtsov A, Lerner M, Rodkevich N, Sokolov S, Perchatkina E, Paravan C. Preparation and Characterization of Al/HTPB Composite for High Energetic Materials. Nanomaterials. 2020; 10(11):2222. https://doi.org/10.3390/nano10112222

Chicago/Turabian Style

Vorozhtsov, Alexander, Marat Lerner, Nikolay Rodkevich, Sergei Sokolov, Elizaveta Perchatkina, and Christian Paravan. 2020. "Preparation and Characterization of Al/HTPB Composite for High Energetic Materials" Nanomaterials 10, no. 11: 2222. https://doi.org/10.3390/nano10112222

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