CL-20作为第三代炸药，是目前有应用前景的能量密度最高的单质炸药，但是受限于其较高的机械感度尚未能广泛应用。学者们一直致力于其降感技术研究。近年，共晶技术在CL-20降感应用中得到了较好效果，制备的CL-20/HMX和CL-20/TNT共晶撞感显著低于CL-20单晶，但其降感机理尚不清楚。本研究拟在晶体的撞击点火实验中引入测温试纸、理化分析、压力测量和高速摄影等量化技术，通过激光人工点火和剖面冻结技术，研究断裂、破碎、熔化、喷射流和点火等各状态剖面之间的相互影响关系，进一步地通过试样构型设计将撞击点火的多因素解耦，结合剖面冻结技术，研究单一点火因素对CL-20单晶和共晶的温升和点火的影响规律，获得HMX和TNT配体对其CL-20共晶中热点形成和温升抑制的作用过程和作用机制。研究结果将为调控高能炸药高能量和低感度带来机理认识，从而为更高能量的高能低感共晶的设计与制备提供有益帮助。

As the third-generation explosive, CL-20 is currently the single-mass explosive with the highest energy density in application prospects. However, due to its high mechanical sensitivity, it has not been widely applied. Scholars have been devoted to the research of its sensitivity-reducing technology. In recent years, the cocrystal technology has obtained good results in the application of CL-20 desensitization. The prepared CL-20/HMX and CL-20/TNT cocrystal impact sensitivity is significantly lower than that of CL-20 single crystal. However, its desensitization mechanism is yet to be known. This study intends to introduce quantitative techniques such as heat-sensitive film, physical and chemical analysis, pressure measurement and high-speed photography in the impact ignition experiment of crystals. Through laser artificial ignition and profile freezing technology, the mutual influence relationship between the profiles of fracture, fragmentation, melting, jet and ignition are studied. Furthermore, the impact ignition mutual-factors are decoupled through the sample configuration design, combined with the profile freezing technology, to study the effect of every single ignition factor on the temperature rise and ignition of CL-20 single crystal and its cocrystals, in order to obtain the affect process and mechanism of HMX and TNT on the inhibition on hot-spot formation and temperature rise of CL-20 cocrystals. The research results will bring about the mechanism understanding of regulating the high energy and low sensitivity of high-energy explosives, and thus provide useful help for the design and preparation of high-energy low-sensitivity cocrystals.