Porous ammonium perchlorate (PAP) was prepared by a successfully developed fluidization process at 230°C. The geometric structure of manufactured PAP was characterized by means of a scanning electron microscope (SEM). The physical and mechanical properties of composite propellans containing PAP were also determined. Owing to the diffusion of binder into pores of PAP, the elongation of propellants decreased.
The Significant Structure Theory of Liquids has been used to calculate the thermodynamic properties, viscosity, self-diffusion coefficient, and specific conductance of molten magnesium oxide, taking account of the decomposition of MgO to Mg and 02 species in the gas-like part of the partition function.
A pilot scale fluidized bed process was developed for preparing porous ammonium perchlorate (PAP) in various particle sizes. The oxidizer, ammonium perchlorate (AP), of composite solid propellant was partially replaced by PAP which was obtained by the fluidization process. The burning rate of propellants containing PAP was found to increase as compared with that of propellants without PAP. In the present study, the effects of percentage content and particle size of PAP incorporated in propellant compositions, on the burning rate were investigated. The results showed that the burning rate increases with increasing of PAP content and with decreasing of PAP particle size for trimodal oxidizer propellants.
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