Ti/CuO and Ti/CuO/Cellulose Nitrate Nanothermites: An Early Insight into Their Combustion Mechanism

Mateusz Polis (), Agnieszka Stolarczyk (), Konrad Szydło, Tomasz Jarosz, Marcin Procek, Sebastian Sławski, Tomasz Gołofit, Barbara Lisiecka and Łukasz Hawełek
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Mateusz Polis: Łukasiewicz Research Network—Institute of Industrial Organic Chemistry, Explosive Techniques Research Group, 42-693 Krupski Młyn, Poland
Agnieszka Stolarczyk: Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, 44-100 Gliwice, Poland
Konrad Szydło: Łukasiewicz Research Network—Institute of Industrial Organic Chemistry, Explosive Techniques Research Group, 42-693 Krupski Młyn, Poland
Tomasz Jarosz: Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, 44-100 Gliwice, Poland
Marcin Procek: Department of Optoelectronics, Silesian University of Technology, 2 Krzywoustego Str., 44-100 Gliwice, Poland
Sebastian Sławski: Department of Theoretical and Applied Mechanics, Silesian University of Technology, 18A Konarskiego Str., 44-100 Gliwice, Poland
Tomasz Gołofit: Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
Barbara Lisiecka: Łukasiewicz Research Network—Institute of Industrial Organic Chemistry, Explosive Techniques Research Group, 42-693 Krupski Młyn, Poland
Łukasz Hawełek: Lukasiewicz Research Network—Institute of Non-Ferrous Metals, 5 Sowinskiego Str., 44-100 Gliwice, Poland

Energies, 2024, vol. 17, issue 17, 1-51

Abstract: Most nanothermite compositions utilise Al as a fuel, due to its low cost, high reactivity and availability. Nevertheless, aluminothermites exhibit high ignition temperature and low active metal content. In this paper, the combustion behaviour of Ti/CuO and Ti/CuO/NC systems is discussed. The compositions were prepared with a wet-mixing/sonication process followed by an electrospray technique and were examined in terms of their mechanical and radiation sensitivity, energetic parameters and morphology. The results exhibited a strong correlation between equivalence ratio and energetic parameters. The performed tests showed the crucial impact the addiction of the chosen energetic binder on the morphology and performance of the compositions. The results of our experiments indicate the occurrence of a different combustion mechanism than the one observed for Al-based nanothermites. In our case, the combustion mechanism involves a limitation by the diffusion of the oxidising agent and its decomposition products into the reactive fuel core.

Keywords: nanothermite; energetic material; combustion; ignition (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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