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Study of dynamic features of highly energetic reactions by DSC and High-Speed Temperature Scanner (HSTS)

Published online by Cambridge University Press:  12 February 2013

M.A. Hobosyan ,
Kh.G. Kirakosyan ,
S.L. Kharatyan  and
K.S. Martirosyan
M.A. Hobosyan
Affiliation:
University of Texas at Brownsville, Department of Physics and Astronomy, Brownsville, TX 78520, USA
Kh.G. Kirakosyan
Affiliation:
Institute of Chemical Physics NAS RA, Yerevan, 0014, Armenia
S.L. Kharatyan
Affiliation:
Institute of Chemical Physics NAS RA, Yerevan, 0014, Armenia Yerevan State University, Yerevan, 0025, Armenia,
K.S. Martirosyan*
Affiliation:
University of Texas at Brownsville, Department of Physics and Astronomy, Brownsville, TX 78520, USA
*
*E-mail: karen.martirosyan@utb.edu
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Abstract

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.

Keywords

nanostructureenergetic materialcombustion synthesis
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1521: Symposium OO – Properties, Processing and Applications of Reactive Materials , 2013 , mrsf12-1521-oo01-05
Copyright
Copyright © Materials Research Society 2013

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References

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