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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Print: 2150-766X
ISSN Online: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.v8.i1.30
pages 31-38

BURNING RATE STUDIES OF BIS-TRIAMINOGUANIDINIUM AZOTETRAZOLATE (TAGzT) AND HEXAHYDRO-1,3,5-TRINITRO-1,3,5-TRIAZINE (RDX) MIXTURES

Benjamin Aaron Mason
Los Alamos National Laboratory, Los Alamos, NM 87545; Purdue University, West Lafayette, Indiana 47907, USA
Joseph M. Lloyd
Los Alamos National Laboratory, Los Alamos, NM 87545
Steven F. Son
School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA
Bryce C. Tappan
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA

ABSTRACT

In this study of the combustion behavior bis-triaminoguanidium azotetrazolate (TAGzT), interesting increases in burning rates were observed when the TAGzT has been formulated with hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX). In order to study the interaction between TAGzT and RDX, formulations were produced of the two materials at various percent compositions and burning rates of the pressed materials were determined. It was found that the burning rate of the mixtures of TAGzT with RDX is greater than the weighted average burning rate of the pure materials at each ratio, and in the case of the 90/10 mixture of TAGzT/RDX, the burning rate in the regime of 10−100 atm was greater than that of even pure TAGzT, while having a lower pressure sensitivity then that of both parent compounds. Burning rate measurements in these formulations showed a greater data scatter than normal, presumably because of heterogeneity of the mixture from pellet to pellet. Detonation studies were also performed and indicate that the mixtures are insensitive to shock at low RDX loadings, with a self-sustained detonation only occurring at mixtures as high as 50% RDX at a diameter of 12.5 mm. Pure TAGzT, in fact, exhibited no detonation propagation even at 25.4 mm. Gas-phase CHEMKIN calculations were performed on this system and indicated a synergistic affect between the reaction products of TAGzT and RDX, yielding some explanation in the observed phenomenology. Thermochemical calculations indicate that reductions in temperature can be achieved with reasonable sacrifices in performance in various propellant applications.

REFERENCES

  1. Hayden, H.F., Michienzi, C.M., Mason, B.A., Son, S.F., and Tappan, B.C., Burning Rate Studies of Triaminoguanidinium Azotetrazolate (TAGzT) and Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) Mixtures.

  2. Tappan, B.C., Ali, A.N., Son, S.F., and Brill, T.B., Decomposition and Ignition of the High-Nitrogen Compound Triaminoguanidinium Azotetrazolate (TAGzT).

  3. Atwood, A.I., Boggs, T.L., Curran, P.O., Parr, T.P., Hanson-Parr, D.M. and Wiknich, J., Burning Rate of Solid Propellant Ingredients, Part 1, Pressure and Initial Temperature Effects.

  4. Ward, M.J., Son, S.F., and Brewster, M.Q., Steady Deflagration of HMX with Simple Kinetics, A Gas Phase Chain Reaction Model.


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