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384 Newest Publications in propellants, explosives, pyrotechnics

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Kinetics of Nano Titanium Dioxide Catalyzed Thermal Decomposition of Ammonium Nitrate and Ammonium Nitrate‐Based Composite Solid Propellant

13-10-2014 | Anuj A. Vargeese, Krishnamurthi Muralidharan, V. N. Krishnamurthy, Propellants, Explosives, Pyrotechnics, 2014

Abstract This study deals with the influence of nanosized titanium dioxide (TiO2) catalysts on the decomposition kinetics of ammonium nitrate (AN) and ammonium nitrate‐based composite solid propellant. TiO2 nanocatalyst with an average particle size of 10 nm was synthesized by sol‐gel method ...

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Effects of MgH2/Mg(BH4)2 Powders on the Thermal Decomposition Behaviors of 2,4,6‐Trinitrotoluene (TNT)

13-10-2014 | Miao Yao, Liping Chen, Jinhua Peng, Propellants, Explosives, Pyrotechnics, 2014

Abstract The thermal properties of 2,4,6‐trinitrotoluene (TNT), TNT/MgH2, and TNT/Mg(BH4)2 were investigated by differential scanning calorimetry (DSC) and accelerating rate calorimetry (ARC). The results show that addition of MgH2 or Mg(BH4)2 to TNT has a great effect on the DSC decomposition ...

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Analysis of Polar Precursors of 1,3,5,7‐Tetranitro‐1,3,5,7‐tetrazocine (HMX) Using Hydrophilic Interaction Chromatography

13-10-2014 | Chao Zhu, Zihui Meng, Zhibin Xu, Min Xue, Fengyan Wang, Yue Liu, Zhihui Lin, Guangmin Qin, Zhongxue Ge, Bozhou Wang, Propellants, Explosives, Pyrotechnics, 2014

Abstract Octahydro‐1,3,5,7‐tetranitro‐1,3,5,7‐tetrazocine (HMX) is currently one of the most widely used explosives. 1,3,5,7‐Tetraacetyl‐1,3,5,7‐tetraazacyclooctane (TAT) is an attractive precursor for the synthesis of HMX; the nitration of this key precursor results in both high yield and ...

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Variation of Methods in Small‐Scale Safety and Thermal Testing of Improvised Explosives

29-09-2014 | Mary M. Sandstrom, Geoffrey W. Brown, Daniel N. Preston, Colin J. Pollard, Kirstin F. Warner, Daniel N. Sorensen, Da ..., Propellants, Explosives, Pyrotechnics, 2014

Abstract One of the first steps in establishing safe handling procedures for explosives is small‐scale safety and thermal (SSST) testing. To better understand the response of homemade or improvised explosives (HMEs) to SSST testing, 16 HME materials were compared to three standard military ...

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Stability Conditions and Interior Ballistics of Recoilless Projected Water Disruptor

26-09-2014 | Marek Radomski, Propellants, Explosives, Pyrotechnics, 2014

Abstract The results of an analysis concerning the recoil effect as well as a mathematical model describing the internal ballistics of a two‐chambered projected water disruptor launcher are presented herein. Conditions for stability of the disruptor are formulated. The considerations are ...

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Flameless Combustion Synthesis of Ni and Ag Nanoparticles in Ballasted Systems: A Time‐Resolved X‐ray Diffraction Study

25-06-2014 | Yurii M. Mikhailov, Victor V. Aleshin, Alexandra M. Kolesnikova, Dmitrii Yu. Kovalev, Vasilii. I. Ponomarev, Propellants, Explosives, Pyrotechnics, 2014

Abstract The combustion of cellulose nitrate in ballasted mixtures containing an organic binder and nickel hydroxycarbonate or silver carbonate as precursors resulted Ni or Ag nanoparticles. The formation of Ni and Ag nanoparticles from flameless combustion of cellulose nitrate was monitored ...

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Synthesis, Characterization, and Combustion Catalytic Activities of Copper(II) and Lead(II) Salts of p‐Nitrocalix[n]arenes (n=4, 6, 8)

25-06-2014 | Guofang Zhang, Chunyan Wang, Ting An, Fengqi Zhao, Xuezhong Fan, Propellants, Explosives, Pyrotechnics, 2014

Abstract Six copper(II) and lead(II) salts of p‐nitrocalix[n]arene (n=4, 6, 8) were synthsized and characterized. The DSC curves of all salts showed exothermic decomposition. Sensitivity studies revealed that all the salts with the exception of the lead salt of p‐nitrocalix[6]arene (NCPb6) are ...

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[Hmim][HSO4], a Green and Recyclable Acidic Ionic Liqiud Medium for the One‐pot Nitration of TADB to HNIW

25-06-2014 | Yadollah Bayat, Mohammad Mahdi Ahari‐Mostafavi, Narges Hasani, Propellants, Explosives, Pyrotechnics, 2014

Abstract An efficient and mild procedure for the one‐pot preparation of CL‐20 from TADB in the presence of the Brønsted acidic ionic liquid 1‐methylimidazolium hydrogen sulfate [Hmim][HSO4] as catalyst was developed. The ionic liquid was stable during the reaction process and could also be ...

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Bishydrazinium and Diammonium Salts of 4,4′,5,5′‐Tetranitro‐2,2′‐biimidazolate (TNBI): Synthesis and Properties

20-06-2014 | Alexander J. Paraskos, Edward D. Cooke, Kelley C. Caflin, Propellants, Explosives, Pyrotechnics, 2014

Abstract The diammonium (1) and bishydrazinium (2) salts of 4,4′,5,5′‐tetranitro‐2,2′‐biimidazolate (TNBI) were synthesized and their physical properties as well as predicted explosive performance characteristics are described. These dianionic salts are easily formed in good yields by reaction ...

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Ammonium Perchlorate, Friend or Foe?

20-06-2014 | Ruth Tunnell, Mark Ashcroft, Roz Dale, Dave Tod, William G. Proud, Propellants, Explosives, Pyrotechnics, 2014

Abstract In part 1 of this paper, it was demonstrated that a nitroglycerine and polyethylene glycol based propellant containing ammonium perchlorate degraded at a slower rate at temperatures of 80 °C or less compared with the other two energetic materials studied which did not have this ...

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