摘要：In order to solve the issue that the combustible objects for cased telescoped ammunition (CTA) didn't burn completely during the combustion process, the microcellular combustible objects were foamed with numerous cells in the micron order to improve the combustion performance by the supercritical carbon dioxide (SC CO2) foaming technology. As the cell structure determined the combustion properties of microcellular combustible objects, the solubility of SC CO2 dissolved into the combustible objects was obtained from the gravimetric method, and scanning electron microscope (SEM) was applied to characterize the cell structure under various process conditions of solubility, foaming temperature and foaming time. SEM images indicate that the cell diameter of microcellular combustible objects is in the level of 1 μm and the cell density is about 1011 cell⋅cm−3. The microcellular combustible objects fabricated by the SC CO2 foaming technology are smooth and uniform, and the high specific surface area of cell structure can lead to the significant combustion performance of microcellular combustible object for CTA in the future.
关键词：Cell structure ; Microcellular combustible object ; Solubility ; Foaming temperature ; Foaming time
