Controlling the Electrostatic Discharge Ignition Sensitivity of Composite Energetic Materials Using Carbon Nanotube Additives
TEXAS TECH UNIV LUBBOCK DEPT OF MECHANICAL ENGINEERING
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Powder energetic materials are highly sensitive to electrostatic discharge ESD ignition. This study shows that small concentrations of carbon nanotubes CNT added to the highly reactive mixture of aluminum and copper oxide AlCuO significantly reduces ESD ignition sensitivity. CNT act as a conduit for electric energy, bypassing energy buildup and desensitizing the mixture to ESD ignition. The lowest CNT concentration needed to desensitize ignition is 3.8 vol. corresponding to percolation corresponding to an electrical conductivity of 0.04 Scm. Conversely, added CNT increased AlCuO thermal ignition sensitivity to a hot wire igniter.
- Refractory Fibers
- Electricity and Magnetism
- Combustion and Ignition