含亚稳态分子间复合物的炸药装药增材制造

In order to improve the density and explosion heat of mixed explosive charge, the MIC metal rings of Al/CuO and Al/PTFE/CuO Metastable Intermolecular Composites (MIC) systems prepared by high-energy ball milling were manufactured by 3D printing technology, and the radial gradient explosive charge of MIC metal ring with high thermal effect was rapidly formed. The microstructure, thermal decomposition behavior, combustion gas production performance of the MIC system (Al/CuO, Al/PTFE/CuO) composite particles prepared by mechanical ball milling, the microstructure, density and size of MIC metal rings, and the density and explosion heat of the explosive charge column containing MIC metal rings were characterized by scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (EDS) and thermogravimetric-differential scanning calorimetry (TG-DSC), respectively. The results show that the particles in the MIC system prepared by the high-energy mechanical ball milling method are uniformly distributed without agglomeration. And both of them show good exothermic behavior during heating, and have high peak pressure (p_max) and pressurization rate during combustion. The MIC ring made by additive manufacturing has good structural integrity and high density. SEM result shows that the particles in the MIC ring are uniformly distributed and densely packed, without obvious defects such as cracks and holes. The densities of the double-layer explosive charge columns containing Al/CuO and Al/PTFE/CuO MIC ring are 2.18g/cm³ and 2.16g/cm³, respectively, and the explosion heat values are 8373kJ/kg and 8940kJ/kg, respectively. Compared with pure CL-20/HMX-based column, the densities increase by 24.8% and 23.7%, and the explosion heat values increase by 3.97% and 11.01%, respectively.