Herein, the effects of cocrystals of two nitroamine explosives, namely hexanitrohexaazaisowurtzitane (CL-20) and 1,3,5,7-tetranitro-1,3,5,7-tetrazoctane (HMX), which are denoted as CHC, on the combustion properties, heat release, and safety profiles of polyether solid propellants were systematically analyzed. The peak decomposition temperature of CHC was found to be 244.8 °C, which is lower than those of its component CL-20 and HMX. However, the thermal stability of CHC was similar to that of CL-20, and the thermal decomposition behavior of CHC was significantly different from that of a physical mixture of CL-20 and HMX. In addition, similar to CL-20, CHC was not completely decomposed upon heating, despite the decomposition activation energy of CHC (322.7 kJ·mol⁻¹) being similar to that of HMX (322.4 kJ·mol⁻¹). In contrast, the thermal decomposition behaviors of CHC-based propellants differed from those of solid propellants that were based on physical mixtures of CL-20 and HMX. During thermal decomposition, CHC did not decompose into CL-20 and HMX, and the heat released from the CHC-based propellants was more concentrated than that released from the other propellant mixture examined. Furthermore, the rate of combustion of CHC-based propellants fell between those of the CL-20- and HMX-based propellants at all the tested pressures. The pressure exponents of combustion rates of the examined CHC-based propellants were slightly lower than those of the CL-20- and HMX-based propellants, and the combustion rates and their corresponding pressure exponents decreased with a decrease in the CHC particle size. Moreover, the explosive heat of CHC-based propellant was between those of the CL-20-based and HMX-based propellants, and similar to that of a CL-20/HMX mixture-based propellant. Finally, the safety performance of CHC-based propellant was almost identical to that of the CL-20/HMX mixture.

在此，两种硝基胺炸药的共晶，即六硝基六氮杂异武兹烷 (CL-20) 和 1,3,5,7-四硝基-1,3,5,7-四氮辛烷 (HMX)，表示为 CHC，对系统地分析了聚醚固体推进剂的燃烧特性、热释放和安全特性。发现 CHC 的峰值分解温度为 244.8 °C，低于其组分 CL-20 和 HMX。然而，CHC 的热稳定性与 CL-20 相似，并且 CHC 的热分解行为与 CL-20 和 HMX 的物理混合物的热分解行为显着不同。此外，与 CL-20 类似，尽管 CHC 的分解活化能 (322.7 kJ·mol ^-1 ) 与 HMX (322.4 kJ·mol⁻¹）。相比之下，基于 CHC 的推进剂的热分解行为与基于 CL-20 和 HMX 物理混合物的固体推进剂的热分解行为不同。在热分解过程中，CHC 没有分解成 CL-20 和 HMX，并且基于 CHC 的推进剂释放的热量比其他推进剂混合物释放的热量更集中。此外，在所有测试压力下，CHC 基推进剂的燃烧速率介于 CL-20 和 HMX 基推进剂之间。所考察的 CHC 基推进剂的燃烧速率压力指数略低于 CL-20 和 HMX 基推进剂，并且燃烧速率及其相应的压力指数随着 CHC 粒径的减小而降低。而且，CHC基推进剂的爆炸热介于CL-20基和HMX基推进剂之间，与CL-20/HMX混合基推进剂的爆炸热相似。最后，基于 CHC 的推进剂的安全性能与 CL-20/HMX 混合物的安全性能几乎相同。