Abstract

This paper reports on the combustion performance of nanoenergetic composites of CuO/Al as a function of nanoscale size of CuO oxidizer and various weight percent loading of gas-generating solid chemical propellant, azobis-isobutyronitrile (AIBN). CuO nanorods with short (sub-100 nm) and long (1.5 μm) nanoscale size were prepared by simple solid-state reaction process using poly-ethylene glycol, PEG400 and sonoemulsion process using PEG8000 respectively. The combustion performance was experimentally characterized in terms of combustion wave speed measurement in an instrumented burn-tube experiment and dynamic pressure-time characteristics measurement in a fully-confined instrumented pressure-cell. The reactivity and peak pressure of PEG8000 assisted synthesized long CuO nanorods based nanoenergetic composites were observed to be remarkably enhanced due to possible consequence of high rate of oxygen release from its increased surface area. The loading of a few percentages (15%) of AIBN has positive effect on enhancing the peak pressure at the sacrifice of combustion wave speed, pressurization rate and heat of exothermic reaction.

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