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Science and Technology of Energetic Materials

Vol.77, No.2 (2016)

Letter

Comparison of burning performances of some ammonium nitrate based mixtures with copper (II) oxide additive
Shingo Date, Toshiaki Ohtake, Ken Ikeda, Yuji Shiraishi, and Atsushi Doi
p.47-50

Abstract

Linear burning rates, r, and average rates-of-pressure-rise (ΔP/Δt)av, of guanidinium 1,5'-bis-1H-tetrazolate (G15B) / ammonium nitrate (AN) / copper (II) oxide (CuO) mixtures (G15B/AN/CuO 10 wt% mixture), whose percentage of CuO added to stoichiometric ratio G15B/AN mixture, and whose particle sizes of G15B and AN were different (10 wt%; and 75∼ 150μm and 75 ∼ 149μm, respectively) as compared to the past study (Date et al., Sci. Tech. Ener. Mat., 76, pp. 25-29 (2015)), were measured and comparisons were made with the past results for other fuel compound/AN/CuO mixtures, where the fuel compound studied was one of: guanidine derivative compound, i.e. guanidine nitrate (GN) or nitroguanidine (NQ); or an azo compound, i.e. azodicarbonamide (ADCA), and also the patented guanidine nitrate (GN) / strontium nitrate (SrN) / basic copper nitrate (BCN) mixture. As a result, G15B/AN/CuO 10 wt% mixture has shown the highestr among the mixtures that were studied. It was also shown that G15B/AN/CuO 10 wt% mixture burnt readily at and above an initial gauge pressure of 0.1 MPa, similar to all mixtures except GN/AN/CuO 1 wt% and 5 wt% mixtures that were compared in this study. As for (ΔP/Δt)av, G15B/AN/CuO 10 wt% mixture has shown the highest value among all the mixtures that were compared in this study. Meanwhile, (ΔP/Δt)avof all NQ/AN/CuO mixtures that were studied, ADCA/AN/CuO 10 wt% mixture and ADCA/AN/CuO 20 wt% mixture, together with G15B/AN/CuO 10 wt% mixture exceeded that of GN/SrN/BCN mixture.

Keywords

ammonium nitrate, guanidine derivative compound, azodicabonamide, guanidinium 1,5'-bis-1H-tetrazolate, copper (II) oxide

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