The dynamic features of Al2O3 - polytetrafluoroethylene (PTFE) and Al - PTFE reactions in non-isothermal conditions are presented. The Differential Scanning Calorimetry (DSC) and High-Speed Temperature Scanner (HSTS) were used to characterize the Al2O3/Al – PTFE reactions at different heating rates. The study shows that the HSTS instrument can give more information about the reaction mechanism and kinetics than the conventional DSC measurements. In this work we show that high heating rates may reveal exothermic reaction between Al2O3 and PTFE that were previously unidentified. The PTFE can potentially remove the oxide layer from aluminum in the initial period of the reaction and increase the direct contact area between oxygen and aluminum, which increases the reaction velocity and improves the energy release abilities of the system.
Hobosyan, M.A., Kirakosyan, K.G., Kharatyan, S.L. et al. Study of dynamic features of highly energetic reactions by DSC and High-Speed Temperature Scanner (HSTS). MRS Online Proceedings Library 1521, 105 (2013). https://doi.org/10.1557/opl.2013.144
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