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N,N′-二(氟偕二硝基乙基)-3,4-二硝胺呋咱(LLM-209)的晶体结构及热分解性质
Crystal Structure and Thermal Decomposition Properties of N,N′-Bis(2-fluoro-2,2′-dinitroethyl)- 3,4-dinitraminefurazan
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中文摘要:
      0 ℃下,用发烟硝酸(98%)/乙酸酐(体积比10∶8)体系对N,N′-二(氟偕二硝基乙基)-3,4-二氨基呋咱(LLM-208)进行硝化,由LLM-208得到硝胺化合物N,N′-二(氟偕二硝基乙基)-3,4-二硝胺呋咱(LLM-209)。在无水甲醇中挥发培养,获得LLM-209的单晶,用X射线单晶衍射仪测试了其单晶结构。通过热重及差示扫描量热仪(TG-DSC)研究了LLM-209的热分解性能,用热重-红外联用仪测试了其气态分解产物,用EXPLO5(V6.02)程序预估了其爆速和爆压,用感度测试仪测试了其撞击感度和摩擦感度。结果表明,LLM-209属于单斜晶系,空间群P21/n,298 K下的晶体密度为1.94 g·cm-3。LLM-209有一个熔化吸热峰(94.27 ℃)和两个明显的分解放热峰(179.96 ℃和233.86 ℃)。LLM-209的气态分解产物主要为NO2、CO2、CO和N2O。LLM-209的理论爆速和爆压分别为8981 km·s-1和40.3 GPa。LLM-209的撞击感度和摩擦感度分别为4 J和48 N。
中文关键词: 含能材料  N,N′-二(氟偕二硝基乙基)-3,4-二硝胺呋咱(LLM-209)  晶体结构  热分解  热重-红外分解产物
英文摘要:
      N,N"-Bis(fluorodinitroethyl)-3,4-diamino furazan (LLM-208) was nitrated using the nitration system of 98% fuming nitric acid/acetic anhydride (10∶8 in volume) at 0 ℃. N,N′-bis(2-fluoro-2,2′-dinitroethyl)-3,4-dinitraminefurazan (LLM-209) was prepared from LLM-208. The single crystal of LLM-209 was obtained by volatilization culture in anhydrous methanol. The single crystal structure was measured by X-ray single crystal diffractometer. The thermal decomposition of LLM-209 was studied by thermogravimetry and differential scanning calorimeter(TG-DSC). The gaseous products of thermal decomposition of LLM-209 were measured by TG-IR. The detonation velocity and detonation presure of LLM-209 were predicted by EXPLO5(V6.02) program. Its impact and friction sensitivities were measured by sensitivity test.Results show that the crystal of LLM-209 belongs to the monoclinic system, space group P21/n, and its density at 298 K is 1.94 g·cm-3. LLM-209 has a melting endothermic peak at 94.27 ℃ and two distinct decomposition exothermic peaks at 179.96 ℃ and 233.86 ℃. The gaseous products of thermal decomposition of LLM-209 are mainly NO2,CO2,CO and N2O. The theoretical detonation velocity and detonation presure of LLM-209 are 8981 km·s-1 and 40.3 GPa, respectively, and the impact and friction sensitivities are 4 J and 48 N, respectively.
英文关键词: energetic materials  N,N′-bis(2-fluoro-2,2′-dinitroethyl)-3,4-dinitraminefurazan(LLM-209)  crystal structure  thermal decomposition  TG-IR decomposition product
DOI:10.11943/CJEM2018072
投稿日期:2018-03-24
最后修改日期:2018-09-29
网络出版日期:2018-09-13
基金项目:中国工程物理研究院科学技术发展基金项目(2015B0302055);国家自然科学青年基金项目(11402237)和国家自然科学基金-中国工程物理研究院联合基金重点项目(U1530262)
引用文献:李杰,马卿,唐水花,等.N,N′-二(氟偕二硝基乙基)-3,4-二硝胺呋咱(LLM-209)的晶体结构及热分解性质[J].含能材料,2019,27(1):41~46.LI Jie,MA Qing,TANG Shui-hua,et al. Crystal Structure and Thermal Decomposition Properties of N,N′-Bis(2-fluoro-2,2′-dinitroethyl)- 3,4-dinitraminefurazan[J]. Chinese Journal of Energetic Materials(Hanneng Cailiao),2019,27(1):41-46.
作者单位E-mail
李杰 西南石油大学材料科学与工程学院, 四川 成都 610500 lijechn@qq.com 
马卿 中国工程物理研究院化工材料研究所, 四川 绵阳 621999  
唐水花 西南石油大学材料科学与工程学院, 四川 成都 610500 spraytang@hotmail.com 
范桂娟 中国工程物理研究院化工材料研究所, 四川 绵阳 621999 fangj02@163.com 
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