Preparation and characterization of AP/SiO₂/Fe₂O₃ nanocomposite

AP/SiO₂/Fe₂O₃ nanocomposite was prepared by sol-gel method. SEM and XRD were used to characterize the structure of the composite. Differential scanning calorimetry(DSC) was used to characterize the thermal decomposition properties of AP and the composite. The results show that SiO₂/Fe₂O₃ is considered as skeleton and AP is in the hole of the gel, forming AP/SiO₂/Fe₂O₃ nanocomposite. Fe₂O₃ spreads in the skeleton evenly. After heating, the grain size of the α-Fe₂O₃ among the skeleton is 9.7 nm, and the reuniter of nano Fe₂O₃ is prevented. AP with a grain size of 80-250 nm is spreaded in the hole of the gel. The composite can advance the thermal decomposition of AP. Its high temperature decomposition peak is reduced by 84.77°C, and the decomposition heat enhanced by 987.1 J/g.