Preparation and Properties of RDX@FOX-7 Composites by Microfluidic Technology

1,3,5-trinitro-1,3,5-triazacyclohexane (RDX) is a type of high energy explosive, its application in weapon systems limited by mechanical sensitivity. At the same time, 1,1-diamino-2,2-dinitroethylene (FOX-7) famous insensitive explosive. The preparation RDX@FOX-7 composites can meet requirements, and low sensitivity, systems. It difficult for reactor to achieve uniform quality composite material, which affects performance. Based on principle solvent-anti-solvent, recrystallization process was precisely controlled microfluidic technology. with different mass ratios were prepared. ratio 10%, are ellipsoid about 15 μm distribution quality. advantages microscale fabrication materials verified. results structure characterization showed that there no new bond formation RDX@FOX-7, but two components surface uniform. characterization, we established model RDX@RDX-7 speculated microscale. With increase FOX-7 ratios, melting temperature RDX advanced, thermal decomposition peak changed double peaks, activation decreased. These changes more pronounced between 3 10% not 10 30%. ignition delay time shorter than FOX-7. burned completely indicating assist heat transfer improve combustion efficiency RDX.