关键词: 应用化学 , 团聚 , 氟化物 , 燃烧速率

Abstract: Several kinds of fluorides were mixed into Mg/NaNO3 fuel-rich propellants by the different experimental methods for improving combustion and ignition performances, decreasing agglomeration of the metal. Burning rates of the propellants were measured. Solid combustion products of tne Mg/ NaNO3 composites mixed by fluorides were collected and analyzed by SEM and XPS. And the particle size distributions of solid combustion products were compared among the different formulations; and the effect action mechanisms of the different fluorides were analyzed. The experimented results show that burning rate of the propellants were decreased, the particle size of solid combustion products were changed after mixing fluorides into the Mg/NaNO3 compositions at a rate of 5% in excess of 100 %, and the formation of the magnesium fluoride may improve the agglomeration of the combustion prod?ucts.

Key words: applied chemistry , agglomeration , fluorides , burning rate