纳米铝粉在高能固体推进剂中的应用

摘要

用纳米铝粉替代3％(质量分数)的微米级铝粉,获得均匀一致的高能固体推进剂药块.研究了纳米铝粉对药块的安全、力学、燃烧和能量性能的影响.结果表明,含纳米铝粉的药块内部结合更紧密,密度与原高能推进剂配方的相同,安全性能和力学性能相差不大.在PET黏合剂体系中加入纳米铝粉能有效提高体系的动、静态燃速,降低燃速压强指数,但未改变其能量性能.%The substitution of nano-aluminum powder for 3% (mass fraction) conventional sized aluminum powder can obtain a uniform high energy solid propellant. The effect of nano-aluminum powder on the property of security, mechanics,combustion and energy of the propellant was investigated. The results indicated that the propellant containing nano-aluminum has a much closer inner,a similar density,secure property and mechanical performance in comparison with the propellant containing conventional sized aluminum powder. The additive of nano-aluminum in PET binder system can increase the static and dynamic burning rate and decrease the pressure exponent of the propellant. However,it can not improve the energy performance.