Preparation and Characterization of Submicron Hexanitrohexaazaisowurtzitane

doi:10.3969/j.issn.1000-1093.2015.01.010

Abstract

Abstract: Submicron hexanitrohexaazaisowurtzitane (CL-20) is prepared using HLG-50 pulverized machine. The laser particle size analyzer and SEM are used to characterize the particle size, size distribution and morphology of sample. The polymorph and purity of CL-20 particles are characterized by Fourier transform infrared spectrometer, laser Raman spectrometer, XRD and HPLC, respectively. The TG/DSC simultaneous thermal analyzer is used to study the thermal decomposition of CL-20. The shock sensitivity of samples are studied. The results show that CL-20 particles are pseudo-spherical with an average particle size (d₅₀) of 210 nm. The polymorph of submicron CL-20 is consistent with that of the raw ε-CL-20. Compared with the raw CL-20, the thermal decomposition peak temperature of the submicron CL-20 is decreased slightly, and the shock sensitivity of the submicron CL-20 is considerably reduced by 53.1%. That implies the obvious reduction in the shock sensitivity of CL-20.

Key words: ordnance science and technology, CL-20, mechanical pulverization, shock sensitivity, sensitivity reduction mechanism

CLC Number:

TJ55

OUYANG Gang, GUO Xiao-de, XI Hai-jun, LIU Jie, HAN Hua, LI Feng-sheng. Preparation and Characterization of Submicron Hexanitrohexaazaisowurtzitane[J]. Acta Armamentarii, 2015, 36(1): 64-69.

References

［1］ Nielsen A T. Caged polynitramine compound: US, 5693794[P]. 1997-12-02.
[2] Millar D I A, Maynard-Casely H E, Allan D R, et al. Crystal engineering of energetic materials: co-crystals of CL-20[J]. CrystEngComm, 2012, 14（10）: 3742-3749.
[3] 王保国, 陈亚芳, 张景林, 等. 亚微米级ε型CL-20的制备、表征与性能[J]. 爆炸与冲击，2009，29(5): 550-54.
WANG Bao-guo, CHEN Ya-fang, ZHANG Jing-lin, et al. Preparation, characterization and performances of submicron ε-CL-20[J]. Explosion and Shock Waves, 2009, 29(5): 550-554. (in Chinese)
[4] 宋小兰，李凤生，张景林，等.粒度和形貌及粒度分布对RDX安全和热分解性能的影响[J]. 固体火箭技术，2008，31(2): 168－172.
SONG Xiao-lan, LI Feng-sheng, ZHANG Jing-lin, et al.Influence of particle size, morphology and size distribution on the safety and thermal decomposition properties of RDX[J]. Journal of Solid Rocket Technology, 2008，31(2): 168-172. (in Chinese)
[5] 刘玉存，王建华，安崇伟, 等. RDX粒度对机械感度的影响[J]. 火炸药学报，2004, 27(2): 7-9.
LIU Yu-chun, WANG Jian-hua, AN Cong-wei, et al.Effect of particle size of RDX on mechanical sensitivity[J]. Chinese Journal of Explosive and Propellants, 2004, 27(2): 7-9. ( in Chinese)
[6] 刘杰, 姜伟，李凤生，等. 纳米级奥克托今的制备及性能研究[J]. 兵工学报，2013, 34(2): 174-180.
LIU Jie, JIANG Wei, LI Feng-sheng, et al. Preparation and study of octahydro-1,3,5,7-tetranitro-1,3,5,7- tetrazocine[J]. Acta Armamentarii, 2013, 34(2): 174-180. ( in Chinese)
[7] Wang J, Li J, An C, et al. Study on ultrasound-and spray-assisted precipitation of CL-20[J]. Propellants, Explosives, Pyrotechnics, 2012, 37(6): 670-675.
[8] Wang Y, Song X, Song D, et al. A versatile methodology using sol-gel, supercritical extraction, and etching to fabricate a nitramine explosive: nanometer HNIW[J]. Journal of Energetic Materials, 2013, 31(1): 49-59.
[9] 朱康，李国平，罗运军. 超临界CO₂反溶剂法制备CL-20超细微粒[J]. 含能材料，2012, 20(4): 445－449.
ZHU Kang, LI Guo-ping, LUO Yun-jun. Preparation of ultrafine CL-20 by supercritical CO₂ anti-solvent method[J]. Chinese Journal of Energetic Materials, 2012, 20(4): 445-449. (in Chinese)
[10] Szczygielska J, Chlebna S, Maksimowski P, et al. Friction sensitivity of the ε-CL-20 crystals obtained in precipitation process[J]. Central European Journal of Energetic Materials, 2011, 8(2): 117-30.
[11] Li J, Thomas B B. Kinetics of solid polymorphic phase transitions of CL-20[J]. Propellants, Explosives, Pyrotechnics,2007, 32(4): 326-333.
[12] Guo C, Zhang H, Wang X, et al. Crystal structure and explosive performance of a new CL-20/caprolactam cocrystal[J]. Journal of Molecular Structure, 2013, 1048(24): 267-273.
[13] Chen H X, Chen S S, Li L J, et al. Quantitative determination of ε-phase in polymorphic HNIW using X-ray diffraction patterns[J]. Propellants, Explosives, Pyrotechnics, 2008, 33(6): 467-471.
[14] Wang J, Huang H, Xu W, et al. Prefilming twin-fluid nozzle assisted precipitation method for preparing na-nocrystalline HNS and its characterization[J]. Journal of Hazardous Materials, 2009, 162(2): 842-847.
[15] Guo X, Ouyang G, Liu J, et al. Massive preparation of reduced-sensitivity nano CL-20 and its characterization [J]. Journal of Energetic Materials, 2015, 33(1): 24-33.
[16] Fathollahi M, Mohammadi B, Mohammadi J. Kinetic investigation on thermal decomposition of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) nanoparticles[J]. Fuel, 2013, 104（4）: 95-100.
[17] 张宝坪，张庆明，黄风雷，爆轰物理学［M］. 北京: 兵器工业出版社，1997: 424－425.
ZHANG Bao-ping, ZHANG Qing-ming, HUANG Feng-lei, Detonation physics[M]. Beijing: Publishing House of Ordnance Industry, 1997: 424-425. (in Chinese)

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