Influences of Bulking and Porous Structure on Barium Nitrate as Pyrotechnic Oxidants

Abstract:

An experimental investigation was carried out to explore the major physical and chemical properties of expanded barium nitrate. Expanded barium nitrate with porous structure was made. The method is as follows: moderately evaporate the solution of barium nitrate and inorganic vesicant; heat the crystallized mixture to decompose the inorganic vesicants. The inorganic vesicants are potassium carbonate, sodium carbonate, ammonium carbonate, ammonium oxalate, potassium acetate, ammonium acetate and ammonium perchlorate. The SEM shows that the modified barium nitrate with potassium carbonate has obvious porous structure. The bulk density of the modified barium nitrate with ammonium perchlorate decreases by 14.6% and the hygroscopicity of that with ammonium oxalate is only 0.06%. The one with sodium carbonate decomposes at 300°C. The safety test shows that both the impact sensitivity and friction sensitivity are 0%.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 27-31
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.27
• Online since: July 2012
• Authors: Xiang Zhang, Xin Chen, Ming Hui Feng, Zai Fang Zheng, Gong Pei Pan, Hui Ping Lv
• Keywords: Barium Nitrate, Fireworks, Inorganic Vesicants, Oxidants, Safety

References

[1] M.E. Brown.Some Thermal Studies on Pyrotechnic Compositions.Journal of Thermal Analysis and Calorimetry,2001,65(2):323-334.

[2] S.G. Fedorov,Sh.L.Guseinov and P.A. Storozhenko.Nanodispersed metal powders in high-energy condensed systems.Nanotechnologies in Russia,2010,5(9-10):565-582.

DOI: 10.1134/s1995078010090016

[3] I.Lee and S.A. Finnegan.Prediction of shock response of Pyrotechnic mixtures from thermal analysis.Journal of Thermal Analysis and Calorimetry,1997,50(5-6):707-717.

DOI: 10.1007/bf01979201

[4] S M Pourmortazavi, M Fathollahi, S S Hajimirsadeghi, S G Hosseini. Thermal behavior of aluminum powder and potassium perchlorate mixtures by DTA and TG.Thermochimica Acta,2006, 443(1):129-131.

DOI: 10.1016/j.tca.2005.11.045

[5] Shiro shimada. Thermosonimetry and Microscopic observation of the Thermal Decomposition of Potassium chlorate[J], Thermochrimica Acta,1995,V255:341-345

DOI: 10.1016/0040-6031(94)02187-s

[6] Seied Ghorban, Hosseini Seied Mahdi Pourmortazavi, Seiedeh Somayyeh Hajimirsadeghi. Thermal decomposition of pyrotechnic mixtures containing sucrose with either potassium chlorate or potassium perchlorate[J].Combustion and Flame, 2005(141):322-326

DOI: 10.1016/j.combustflame.2005.01.002

[7] Fan X H, Cai Z Y, Yi J. Research and Progress of Oxidants Used in Fireworks and Firecrackers. China Safety Science Journal, 2008, 18(6): 80-83(in Chinese)

[8] QIAN Xin—ming, WEI Si—fan, DENG Nan. Effect of Carbon Nanotubes Supporting Transition Metal Oxides on Reaction Rate of Firework of Potassium Perchlorate. CHINESE JOURNAL OF EXPLOSIVES & PROPELLANTS. 2009,32(3)

[9] MEI Zhen-hua, ZENG Gui-yu, QIAN Hua, Lü Chun-xu.Self-sensitizing Characteristics and Detonation Performance of Ammonium Nitrate. CHINESE JOURNAL OF ENERGETIC MATERIALS. 2011,19(1): (33—36)

[10] Irmeli M Tuukkanen, Edward L Charsley, Peter G Laye, James J Rooney, Trevor T Griffiths, Helge Lemmetyinen. Pyrotechnic and Thermal Studies on the Magnesium-Strontium Nitrate Pyrotechnic System[J]. Propellants, Explosives, Pyrotechnics, 2006, 31(2):110-115.

DOI: 10.1002/prep.200600012

[11] I M Tuukkanen, S D Brown, E L Charsley, S J Goodall, P G Laye, J J Rooney, T T Griffiths, H Lemmetyinen. A study of the influence of the fuel to oxidant ratio on the ageing of magnesium–strontium nitrate pyrotechnic compositions using isothermal microcalorimetry and thermal analysis techniques[J]. Thermochimica Acta, 2005, 426(1): 115-122.

DOI: 10.1016/j.tca.2004.07.011