Nano BaSO4 prepared by microreactor and its effect on thermal decomposition of some energetics

Abstract

Barium sulfate has been widely used in different fields due to its excellent physical and chemical properties, but its application in solid propellants has not yet been explored. In this work, novel microreactor was used to prepare the barium sulfate nanoparticles. Then the barium sulfate nanoparticles were characterized by Scanning electron microscopy (SEM), Transmission electron microscope (TEM), Energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Brunauer-Emmett-Teller (BET). The results show that the barium sulfate nanoparticles are almost spherical with a diameter of 54.34 nm. More, it also has a larger specific surface area. Then 3% barium sulfate nanoparticles were mixed with AP, AN and CL-20 respectively. The results shows that the decomposition peaks of AP and AN are significantly advanced, indicating that nano-barium sulfate has a significant catalytic effect on AP and AN. Nano barium sulfate also has the characteristics of eliminating secondary flames and absorbing harmful radiation, so it is expected to be widely used in solid propellants.

Keywords

• BaSO4
• AP
• AN
• Thermal decomposition
• Microreactor