THE APPLICATION OF NANO-OXIDE IN NITRAMINE PROPELLANT

摘要

Up to now, it has not been found that catalysts are effective to increase the burning rate of gun propellant which burn at high-pressure region. In this paper, a new technique is introduced to modify the propellants' combustion. Having been cut down to nano-meter scale, the particular, compared with bulk materials of the same kind, presents a sudden change in its properties. The result from closed bomb and constant pressure (barostat) bomb test shows that the burning rate of nitramine propellant in which nano-oxides are added increases by 24%, and more significantly, the sample's sensitivity to temperature shows a great decline with the burning rate temperature coefficient decreasing to 0.03%/°C and 0.09%/°C at 100MPa for 20～50°C and -40～20°C region respectively, by contrast, 0.40%/°C and 0.20%/°C of reference sample correspondingly. Moreover, owing to only trace nano-oxides contained, the modified sample still maintains a high mechanical strength. Some Mechanisms of catalysis after introducing nano-oxides are also discussed.