Preparation and Energy Release Properties of nB@F2603@CL-20 Microspheres by Electrospray

Nano-boron, as a potential high-energy additive due to its high calorific value, is widely studied in propellants, explosives, and thermites. However, the unexpected agglomeration of surface oxidation hinders further application, especially casting energetic materials. The fluorine-modified nano-boron nB@F2603 nB@F2603@CL-20 preagglomerated microspheres were prepared by electrospray improve ignition combustion reactions rheological properties boron-containing systems. Sphericity could be obtained controlling voltage propulsion rate. morphology elemental distribution characterized scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), diffractometer (XRD). Results showed that particle size ranged from 4 14 µm. Boron, fluorine nitrogen uniformly distributed on microspheres. XRD results CL-20 was ?-crystal. thermal reaction differential calorimetry, thermogravimetry mass spectrometry (TG-DSC-MS), oxygen bomb calorimeter, laser ignition, volume cell test. F2603 significantly promote nano-boron, causing higher energy release pressurization rates, lower temperature. Adding also greatly rates release. hydrophobicity corrosion resistance structures studied, had good stabilities. Therefore, fluorine-containing might used composite materials, replacing nano-boron.