Abstract: The cocrystal of 2,4,6,8,10,12-hexanitrohexaazaisowurtzitane (CL-20) and 2,4-dinitro-2,4-diazapentane (DNDAP) was prepared through slow evaporation method.The morphology of cocrystal was characterized by scanning electron microscopy (SEM) and its structure was determined by single crystal X-ray diffraction.The thermal decomposition behavior,sensitivity and calculated detonation properties of CL-20/DNDAP were also investigated.Results showed that the crystal was monoclinic,space group P2/1c with crystal parameters of a=1.3022(2)nm,b=2.2619(4)nm,c=1.2962(2)nm,α=90°,β=104.648(3)°,γ=90°.DSC analysis showed that the exothermic decomposition of CL-20/DNDAP occured in the temperature range of 210~260℃ and the melting point of CL-20/DNDAP was higher than that of DNDAP.Results revealed that the mechanical sensitivity of cocrystal decreased obviously compared to that of CL-20 with H50=33.1 cm and P=48%.Furthermore,the detonation velocity and pressure of cocrystal were also calculated to be 8870m/s and 36.40GPa by Kamlet-Jacobs equation,respectively.It proved that CL-20/DNDAP cocrystal had a good detonation performance.
段秉蕙, 刘宁, 舒远杰, 廉鹏, 卢先明, 莫洪昌. CL-20/DNDAP共晶含能材料的晶体结构与性能研究[J]. 化工新型材料, 2018, 46(11): 84-87.
Duan Binghui, Liu Ning, Shu Yuanjie, Lian Peng, Lu Xianming, Mo Hongchang. Crystal structure and performance of CL-20/DNDAP cocrystal energetic material. New Chemical Materials, 2018, 46(11): 84-87.
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