Abstract
It is known that, under strong shock wave loading or at high temperatures, polytetrafluoroethylene (PTFE) decomposes and forms chemically active products that are capable of interaction with metals. In this work, data on the heat of explosion of mixtures containing HMX, PTFE, and Al are given. From the results, it follows that aluminized explosive compositions are characterized by high values of the heat of explosion. The high temperatures that develop at the formation of aluminum oxide promote PTFE decomposition. However, the heat of an explosion decreases as PTFE concentration increases. This is because PTFE has a strongly negative heat of formation. The evaluation of the acceleration ability shows that PTFE can be used in explosive formulations, intended for the accelerating action, on condition that the composition contains a high explosive with a positive oxygen balance.
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Funding
This work was carried out due to the grant allocated by the Institute of Chemical Physics of the Russian Academy of Sciences for the State task performance “Creation of high-energy materials of a new generation and research of their characteristics” (topic AAAA-A18-118031490034-6).
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Translated by V. Selikhanovich
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Makhov, M.N. Heat of Explosion and Acceleration Ability of Explosive Compositions Containing Polytetrafluoroethylene. Russ. J. Phys. Chem. B 14, 45–51 (2020). https://doi.org/10.1134/S1990793120010091
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DOI: https://doi.org/10.1134/S1990793120010091