Enhancing the energy release performance of Al@(1H,1H,2H,2H-perfluorodecyltriethoxysilane/Glycidyl azide polymer) core-shell materials via in-situ polymerization

Improving the energy release efficiency of aluminium powders in weaponry is essential. In this study, uniform core-shell Al@(PFDTES/GAP) was prepared by hydrolyzing PFDTES and co-reacting it with GAP on aluminum powder. It showed better thermal reaction, combustion and energy release. The thermal properties of Al@(PFDTES/GAP) exhibit a significant aluminum-fluorine exothermic phenomenon in DSC, with a 4.9 % increase in exothermic heat in the combustion test compared to raw-Al. For the samples blended with PTFE, Al@(PFDTES/GAP)/PTFE demonstrated excellent performance in terms of increased heat release (increased by 28.0 %) in DSC, higher heat release (increased by 10.2 %) in the heat of combustion test, larger combustion flame area and faster combustion speed (the time reduced by 20.0 %) in the air, compared with that of raw-Al/PTFE. In conclusion, this method is simple and effective to enhance the energy release of aluminium powder, which is of great significance for improving the energy of weapons and equipment.