Science and Technology of Energetic Materials

Vol.71, No.3 (2010)

Research paper

Effect of the particle size and specific surface area of ferric oxide catalyst on the burning rate of AP/HTPB solid propellant
Kaori Fujimura and Atsumi Miyake


Combustion tests were carried out to investigate the effect of ferric oxide catalyst particle size on the burning rate of a solid propellant consisting of ammonium perchlorate (AP) as an oxidizer and hydroxyl-terminated polybutadiene (HTPB) as a binder. The ferric oxide particle sizes used in the present study varied from nanometer to submicron size. A Crawford-type strand burner was used for the combustion test and the burning rate was calculated by the fuse-wire method. A correlation between the ferric oxide particle size and the burning rate of the propellant sample was confirmed. Moreover, the relationship between the theoretically and experimentally obtained specific surface areas of the ferric oxides and the catalytic efficiency of the propellant sample calculated from the burning rate was also clarified.


solid propellant, nano ferric oxide, ammonium perchlorate, catalysis, burning rate.

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