Journal
CENTRAL EUROPEAN JOURNAL OF ENERGETIC MATERIALS
Volume 14, Issue 1, Pages 105-119Publisher
INST INDUSTRIAL ORGANIC CHEMISTRY
DOI: 10.22211/cejem/67456
Keywords
nanothermite; electrostatic discharge sensitivity; resonant acoustic mixing; nano aluminium
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Funding
- Royal Military College of Canada
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The sensitivity of nanothermites to electrostatic discharge (ESD) has been noted by many authors. In the present work, nanothermites have been prepared using aluminium fuels with oxide (O-Al), palmitic acid (L-Al) and Viton (V-Al) passivation and CuO, Fe2O3 and MoO3 oxidants, as well as binary oxidant mixtures. Fuel- and oxidant-based ESD sensitivity trends of O-Al approximate to L-Al >> V-Al and MoO3 >> CuO approximate to Fe2O3 were observed with binary oxidants affording intermediate sensitivities. In the majority of cases, with the exception of high proportions of MoO3 oxidant, nanothermites containing V-Al fuel were the least sensitive to ESD at > 0.156 J. Resistivity measurements have been made for the fuels and oxidants and follow the trends V-Al >> O-Al approximate to L-Al and MoO3 >> Fe2O3 > CuO. V-Al resistivity of ca. 10(11) vertical bar Omega.cm exceeds that of the oxidants studied. An ESD sensitivity trend, based on a reduced proportion of spark current carried by the aluminium fuel, is proposed and was consistent with the observed ESD and resistivity data.
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