Yudin Nikolay V, Sinditskii Valery P, Filatov Sergei A, Serushkin Valery V, Kostin Nikita A, Ivanyan Marine V, Zhang Jiang-Guo
Chemical Engineering Department, Mendeleev University of Chemical Technology, 9 Miusskaya Square, 125047, Moscow, Russia.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, P. R. China.
Chempluschem. 2020 Sep;85(9):1994-2000. doi: 10.1002/cplu.202000534.
A new solvate of a powerful explosive 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20) and liquid oxidizer N O has been synthesized. When stored at room temperature, the white crystals turn yellowish brown, which indicates partial dissociation of N O with the formation of a stable NO free radical, which is confirmed by ESR spectroscopy. The resulting solvate was analyzed by powder X-ray diffraction, IR-spectroscopy, differential scanning calorimetry and thermogravimetric analysis. The vapor pressure of NO above the solvate crystals is similar to the pressure above common hydrates. The presence of the NO radical does not affect the thermal stability of CL-20. However, under closed conditions, NO increases the rate of the autocatalytic decomposition reaction. The kinetics of this reaction at the surface temperature determine the burning rate of the solvate. The novel solvate has a high density (1.98 g cm ), a high predicted detonation velocity and pressure, and sensitivity to impact slightly higher to that of ϵ-CL-20.
一种新型的强力炸药2,4,6,8,10,12-六硝基-2,4,6,8,10,12-六氮杂异伍兹烷（CL-20）与液体氧化剂NO的溶剂化物已被合成。在室温下储存时，白色晶体变为黄褐色，这表明NO发生了部分离解并形成了稳定的NO自由基，电子自旋共振光谱证实了这一点。通过粉末X射线衍射、红外光谱、差示扫描量热法和热重分析对所得溶剂化物进行了分析。溶剂化物晶体上方NO的蒸气压与普通水合物上方的压力相似。NO自由基的存在不影响CL-20的热稳定性。然而，在封闭条件下，NO会提高自催化分解反应的速率。该反应在表面温度下的动力学决定了溶剂化物的燃烧速率。这种新型溶剂化物具有高密度（1.98 g·cm³）、高预测爆速和爆压，且对冲击的敏感度略高于ε-CL-20。
