<i>α</i>→<i>β</i> Phase Transition Characteristics of High-Energy and Low-Sensitivity Explosive FOX-7

GU Xiaofei; FAN Siqi; LI Rujiang; LI Hongzhen

doi:10.11858/gywlxb.20200653

Volume 35 Issue 3

Jun 2021

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Chinese Journal of High Pressure Physics > 2021 > 35(3): 031301.

GU Xiaofei, FAN Siqi, LI Rujiang, LI Hongzhen. α→β Phase Transition Characteristics of High-Energy and Low-Sensitivity Explosive FOX-7[J]. Chinese Journal of High Pressure Physics, 2021, 35(3): 031301. doi: 10.11858/gywlxb.20200653

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GU Xiaofei, FAN Siqi, LI Rujiang, LI Hongzhen. α→β Phase Transition Characteristics of High-Energy and Low-Sensitivity Explosive FOX-7[J]. Chinese Journal of High Pressure Physics, 2021, 35(3): 031301. doi: 10.11858/gywlxb.20200653

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α→β Phase Transition Characteristics of High-Energy and Low-Sensitivity Explosive FOX-7

doi: 10.11858/gywlxb.20200653

GU Xiaofei^{1, 2
,},
FAN Siqi¹,
LI Rujiang²,
LI Hongzhen^{1,*
,
,}

1.
Institute of Chemical Materials, CAEP, Mianyang 621999, Sichuan, China
2.
School of Environmental and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, China

Received Date: 10 Dec 2020
Rev Recd Date: 30 Dec 2020

Abstract

Abstract

In order to understand the specific process of α→β phase transition in FOX-7, some experimental methods are used to analyze the α→β phase transition, such as scanning electron microscope, THMSG600 heating stage instrument, and micro-confocal Raman spectrum. The changes of the crystal morphology during the α→β phase transition in FOX-7 are studied at the overall and individual levels of the crystal in detail. At the same time, the effects of different factors such as heating rate, crystal morphology, and crystal defects of α→β phase transition are explored. The results show that during the α→β phase transition, cracks and breakages appear in the crystals, and the crystals become opaque. Meanwhile, it was found that the crystal size, heating rate, and crystal morphologies have effects on the phase transition in different degrees. It is relatively more prone to phase change in the case of larger massive crystals under a slower heating rate. Besides, the phase transition of α→β is a continuous process, and it gradually diffuses from a certain defect to the entire crystal. For this reason, in-situ polymerization of dopamine can be used to coat FOX-7 crystals to achieve the purpose of inhibiting the α→β phase transition.
- FOX-7,
- crystal,
- α→β phase transition,
- Raman spectra,
- dopamine-coated

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References(26)

References

[1]	LATYPOV N V, BERGMAN J, LANGLET A, et al. Synthesis and reactions of 1, 1-diamino-2, 2-dinitroethylene [J]. Tetrahedron, 1998, 54(38): 11525–11536. doi: 10.1016/S0040-4020(98)00673-5
[2]	BELLAMY A J. FOX-7 (1, 1-Diamino-2, 2-dinitroethene) [M]//KLAPÖTKE T M. High Energy Density Materials. Berlin, Heidelberg: Springer, 2007: 1–33.
[3]	TRZCIŃSKI W, BELAADA A. 1, 1-diamino-2, 2-dinitroethene (DADNE, FOX-7)-properties and formulations (a review) [J]. Central European Journal of Energetic Materials, 2016, 13(2): 527–544. doi: 10.22211/cejem/65000
[4]	BEMM U, ÖSTMARK H. 1, 1-Diamino-2, 2-dinitroethylene: a novel energetic material with infinite layers in two dimensions [J]. Acta Crystallographica Section C, 1998, 54(12): 1997–1999. doi: 10.1107/S0108270198007987
[5]	SUN Q, ZHANG Y, XU K Z, et al. Studies on thermodynamic properties of FOX-7 and its five closed-loop derivatives [J]. Journal of Chemical and Engineering Data, 2015, 60(7): 2057–2061. doi: 10.1021/acs.jced.5b00021
[6]	YAN C, QI X J, WANG K C, et al. Revisiting the reactive chemistry of FOX-7: cyclization of FOX-7 affords the fused-ring polynitro compounds [J]. Chemical Communications, 2019, 55(24): 3497–3500. doi: 10.1039/c8cc10178g
[7]	YAN C, YANG H W, QI X J, et al. A simple and versatile strategy for taming FOX-7 [J]. Chemical Communications, 2018, 54(67): 9333–9336. doi: 10.1039/C8CC05562A
[8]	ZHOU T H, LI Y F, XU K Z, et al. The new role of 1, 1-diamino-2, 2-dinitroethylene (FOX-7): two unexpected reactions [J]. New Journal of Chemistry, 2017, 41(1): 168–176. doi: 10.1039/C6NJ03370A
[9]	FANG X, MCLUCKIE W G. Laser ignitibility of insensitive secondary explosive 1, 1-diamino-2, 2-dinitroethene (FOX-7) [J]. Journal of Hazardous Materials, 2015, 285: 375–382. doi: 10.1016/j.jhazmat.2014.12.006
[10]	LAN G C, JIN S H, CHEN M L, et al. Preparation and thermal properties study of HNIW/FOX-7 based high energy polymer bonded explosive (PBX) with low vulnerability to thermal stimulations [J]. Journal of Energetic Materials, 2020, 38(1): 83–97. doi: 10.1080/07370652.2019.1665146
[11]	JENSEN T L, UNNEBERG E, KRISTENSEN T E. Smokeless GAP-RDX composite rocket propellants containing diaminodinitroethylene (FOX-7) [J]. Propellants Explosives Pyrotechnics, 2017, 42(4): 381–385. doi: 10.1002/prep.201600278
[12]	郜婵, 孙晓宇, 梁文韬, 等. RDX、HMX及CL-20晶体的高温高压相变研究进展 [J]. 含能材料, 2020, 28(9): 902–914. doi: 10.11943/CJEM2020088 GAO C, SUN X Y, LIANG W T, et al. Review on phase transition of RDX, HMX and CL-20 crystals under high temperature and high pressure [J]. Chinese Journal of Energetic Materials, 2020, 28(9): 902–914. doi: 10.11943/CJEM2020088
[13]	EVERS J, KLAPÖTKE T M, MAYER P, et al. α- and β-FOX-7, Polymorphs of a high energy density material, studied by x-ray single crystal and powder investigations in the temperature range from 200 to 423 K [J]. Inorganic Chemistry, 2006, 45(13): 4996–5007. doi: 10.1021/ic052150m
[14]	ZAKHAROV V V,CHUKANUV N V,CHERVONNYI A D. phase transitions α→β and β→α in 1, 1-Diamino-2, 2-dinitroethylene [J]. Russian Journal of Physical Chemistry B, 2014, 8(6): 822–828. doi: 10.1134/S1990793114110104
[15]	BISHOP M M, VELISAVLJEVIC M N, CHELLAPPA R, et al. High pressure-temperature phase diagram of 1, 1-Diamino-2, 2-dinitroethylene (FOX-7) [J]. The Journal of physical Chemistry A, 2015, 119: 9739. doi: 10.1021/acs.jpca.5b07811
[16]	BISHOP M M, CHELLAPPA R S, LIU Z, et al. High pressure-temperature polymorphism of 1,1-Diamino-2,2-dinitroethylene [J]. Journal of Physics: Conference Series, 2014: 500.
[17]	DREGER Z A, TAO Y, GUPTA Y M. Polymorphs of 1,1-diamino-2,2- dinitroethene (FOX-7): isothermal compression versus isobaric heating [J]. Chemical Physics Letters, 2013, 584: 83–87. doi: 10.1016/j.cplett.2013.08.070
[18]	DREGER Z A, STASH A I, YU Z G, et al. High-pressure crystal structures of an insensitive energetic crystal: 1, 1-diamino-2, 2-dinitroethene [J]. The Journal of Physical Chemistry C, 2016, 120(2): 1218–1224. doi: 10.1021/acs.jpcc.5b10644
[19]	ZAKHAROV V V, CHUKANOV N V, DREMOVA N N, et al. High-temperature structural transformations of 1, 1-diamino-2, 2-dinitroethene (FOX-7) [J]. Propellants Explosives Pyrotechnics, 2016, 41(6): 1006–1012. doi: 10.1002/prep.201600071
[20]	DREGER Z A, TAO Y H, GUPTA Y M. Phase diagram and decomposition of 1, 1-diamino-2, 2-dinitroethene single crystals at high pressures and temperatures [J]. The Journal of Physical Chemistry C, 2016, 120(20): 11092–11098. doi: 10.1021/acs.jpcc.6b02360
[21]	CRAWFORD M J, EVERS J, GÖBEL M, et al. γ-FOX-7: structure of a high energy density material immediately prior to decomposition [J]. Propellants Explosives Pyrotechnics, 2007, 32(6): 478–495. doi: 10.1002/prep.200700240
[22]	GONG F Y, ZHANG J H, DING L, et al. Mussel-inspired coating of energetic crystals: a compact core–shell structure with highly enhanced thermal stability [J]. Chemical Engineering Journal, 2017, 309: 140–150. doi: 10.1016/j.cej.2016.10.020
[23]	叶方青, 曾贵玉, 吕春绪, 等. 聚合物对硝酸铵相转变的影响 [J]. 含能材料, 2008, 16(1): 77–79. doi: 10.3969/j.issn.1006-9941.2008.01.022 YE F Q, ZENG G Y, LÜ C X, et al. Effects of polymers on phase transition of ammonium nitrate [J]. Chinese Journal of Energetic Materials, 2008, 16(1): 77–79. doi: 10.3969/j.issn.1006-9941.2008.01.022
[24]	曾贵玉, 周建华, 吕春绪, 等. 无机物对硝酸铵相转变的影响 [J]. 含能材料, 2007, 15(4): 400–403. doi: 10.3969/j.issn.1006-9941.2007.04.027 ZENG G Y, ZHOU J H, LÜ C X, et al. Effect of inorganic additives on phase transition of ammonium nitrate [J]. Chinese Journal of Energetic Materials, 2007, 15(4): 400–403. doi: 10.3969/j.issn.1006-9941.2007.04.027
[25]	叶毓鹏, 曹欣茂, 叶玲, 等. 炸药结晶工艺学及其应用[M]. 北京: 兵器工业出版社, 1995: 47–48. YE Y P, CAO X M, YE L, et al. Explosive crystallization technology and its application [M]. Beijing: Weapon Industry Press, 1995: 47–48.
[26]	关羽翔. 热刺激下奥克托金β→δ相变的缺陷演化规律研究[D]. 太原: 中北大学, 2018: 17–22. GUAN Y X. Study on the defect evolution law from the transition of β→δ in HMX [D]. Taiyuan: North University of China, 2018: 17−22.

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α→β Phase Transition Characteristics of High-Energy and Low-Sensitivity Explosive FOX-7

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