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Nanostructured Energetic Materials with Sol-gel Methods

Published online by Cambridge University Press:  01 February 2011

Alexander E. Gash,
Joe H. Satcher Jr.,
Randall L. Simpson and
Brady J. Clapsaddle
Alexander E. Gash*
Affiliation:
Energetic Materials Center, Lawrence Livermore National Laboratory, Livermore, CA 94551
Joe H. Satcher Jr.
Affiliation:
Energetic Materials Center, Lawrence Livermore National Laboratory, Livermore, CA 94551
Randall L. Simpson
Affiliation:
Energetic Materials Center, Lawrence Livermore National Laboratory, Livermore, CA 94551
Brady J. Clapsaddle
Affiliation:
Energetic Materials Center, Lawrence Livermore National Laboratory, Livermore, CA 94551
*
* LLNL, P.O. Box 808 L-092, Livermore, CA 94551 gash2@llnl.gov; Ph. (925) 423–8618
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Abstract

The utilization of sol-gel chemical methodology to prepare nanostructured energetic materials as well as the concepts of nanoenergetics is described. The preparation and characterization of two totally different compositions is detailed. In one example, nanostructured aerogel and xerogel composites of sol-gel iron (III) oxide and ultra fine grained aluminum (UFG Al) are prepared, characterized, and compared to a conventional micron-sized Fe2O3/Al thermite. The exquisite degree of mixing and intimate nanostructuring of this material is illustrated using transmission and scanning electron microscopies (TEM and SEM). The nanocomposite material has markedly different energy release (burn rate) and thermal properties compared to the conventional composite, results of which will be discussed. Small-scale safety characterization was performed on the nanostructured thermite. The second nanostructured energetic material consists of a nanostructured hydrocarbon resin fuel network with fine ammonium perchlorate (NH4ClO4) oxidizer present.

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References

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