In order to study the effect of boron modified by nano-CuO on Mg/PTFE fuel-rich propellant,B/CuO composite fuel was prepared by ball-milling method and put into Mg/PTFE fuel-rich propellant as additives,and then three kinds of Mg/PTFE fuel-rich propellants with different types of B/CuO composite fuel were prepared by mixing and molding technology. Microstructure and thermal reactivity property of B/CuO composite fuel were tested by SEM and TG-DSC respectively. Burning rate,burning temperature,reaction produ...