To meet the requirement of miniaturization and integration of the micro thrusters based on the chemical fuels, high-energy density compound is an emerging material as the chemical fuel. However, it is still challenging to realize the high-efficiency, stable and self-sustaining microcombustion of the high-energy density chemical fuels. Herein, we report the high-performance microcombustion of CWs/AP/CL-20 composite with nanoscale 2,4,6,8,10,12-(hexanitrohexaaza)cyclododecane (CL-20) and oxidizer ammonium perchlorate (AP) confined in a self-standing carbonized butterfly wing scales (CWs) matrix. CWs with multi-channeled hierarchical porous structure provide a model architecture for loading of AP and CL-20. CL-20 is designed to serve as heat/pressure loss compensate agent due to its high-energy density, fast energy release rate and large amounts of gas release during combustion process. The combustion of CWs/AP/CL-20 is greatly enhanced due to the enhanced heat and mass transfer originating from the multi-channeled hierarchical porous structure and synergistic reactions between components at nanoscales, which is demonstrated as promising solid-propellant for the micro thruster. It is found that the sample with oxygen balance close to zero, which can be conveniently regulated by adjusting the mass ratio of CL-20 and AP, has the best microcombustion performance, resulting in a specific impulse of 383.5 N·s/kg.

为满足基于化学燃料的微型推进器小型化和集成化的要求，高能量密度化合物是一种新兴的化学燃料材料。然而，实现高能量密度化学燃料的高效、稳定和自持微燃烧仍然具有挑战性。在此，我们报告了 CWs/AP/CL-20 复合材料与纳米级 2,4,6,8,10,12-(六硝基六氮杂)环十二烷 (CL-20) 和氧化剂高氯酸铵 (AP) 的高性能微燃烧。自立式碳化蝶翼鳞片 (CW) 矩阵。具有多通道分层多孔结构的 CW 为加载 AP 和 CL-20 提供了模型架构。由于其高能量密度，CL-20 被设计用作热量/压力损失补偿剂，燃烧过程中能量释放速度快，气体释放量大。CWs/AP/CL-20 的燃烧由于源自多通道分级多孔结构和纳米级组件之间的协同反应增强的传热和传质而大大增强，这被证明是用于微推进器的有前途的固体推进剂. 发现氧平衡接近于零的样品，通过调节CL-20和AP的质量比可以方便地调节，微燃烧性能最好，比冲为383.5 N·s/kg。CWs/AP/CL-20 的燃烧由于源自多通道分级多孔结构和纳米级组件之间的协同反应增强的传热和传质而大大增强，这被证明是用于微推进器的有前途的固体推进剂. 发现氧平衡接近于零的样品，通过调节CL-20和AP的质量比可以方便地调节，微燃烧性能最好，比冲为383.5 N·s/kg。CWs/AP/CL-20 的燃烧由于源自多通道分级多孔结构和纳米级组件之间的协同反应增强的传热和传质而大大增强，这被证明是用于微推进器的有前途的固体推进剂. 发现氧平衡接近于零的样品，通过调节CL-20和AP的质量比可以方便地调节，微燃烧性能最好，比冲为383.5 N·s/kg。