Improving the thermal decomposition performance of hexanitrohexaazaisowurtzitane (CL-20) by appropriate methods is helpful to promote the combustion performance of CL-20-based solid propellants. In this study, we synthesized a sandwich structure of CL-20 and nanoporous carbon scaffolds film (NCS) and emphatically studied the thermal decomposition performance of the composite structure. Thermogravimetric analysis and differential scanning calorimetry were used to measure the thermal decomposition process of the composite structure. The kinetic parameters of thermal decomposition were calculated by the thermal dynamic analysis software AKTS. These results showed that the thermal decomposition performance of the sandwich structure of CL-20 and NCS was better than CL-20. Among the tested samples, NCS with a pore size of 15 nm had the best catalytic activity for the thermal decomposition of CL-20. Moreover, the thermal decomposition curve of the composite structure at the heating rate of 1 K/min was deconvoluted by mathematical method to study the thermal decomposition process. And a possible catalytic mechanism was proposed. The excellent thermal decomposition performance is due to the sandwich structure enhances the interface reaction of CL-20 and NCS. This work may promote the extensive use of CL-20 in the field of solid rocket propellant.

通过适当的方法改善六硝基六氮杂异维他烷(CL-20)的热分解性能有助于提高CL-20基固体推进剂的燃烧性能。在这项研究中，我们合成了CL-20和纳米多孔碳支架膜（NCS）的夹层结构，并着重研究了复合结构的热分解性能。采用热重分析和差示扫描量热法测量复合结构的热分解过程。热分解动力学参数通过热动力学分析软件AKTS计算。这些结果表明，CL-20和NCS的夹层结构的热分解性能优于CL-20。在被测样本中，孔径为15 nm的NCS对CL-20的热分解具有最好的催化活性。此外，采用数学方法对1 K/min加热速率下复合结构的热分解曲线进行解卷积，研究热分解过程。并提出了一种可能的催化机理。优异的热分解性能是由于夹层结构增强了CL-20和NCS的界面反应。这项工作可能会促进CL-20在固体火箭推进剂领域的广泛应用。优异的热分解性能是由于夹层结构增强了CL-20和NCS的界面反应。这项工作可能会促进CL-20在固体火箭推进剂领域的广泛应用。优异的热分解性能是由于夹层结构增强了CL-20和NCS的界面反应。这项工作可能会促进CL-20在固体火箭推进剂领域的广泛应用。