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Title: Nanostructured energetic materials derived from sol-gel chemistry

Abstract

Initiation and detonation properties are dramatically affected by an energetic material's microstructural properties. Sol-gel chemistry allows intimacy of mixing to be controlled and dramatically improved over existing methodologies. One material goal is to create very high power energetic materials which also have high energy densities. Using sol-gel chemistry we have made a nanostructured composite energetic material. Here a solid skeleton of fuel, based on resorcinol-formaldehyde, has nanocrystalline ammonium perchlorate, the oxidizer, trapped within its pores. At optimum stoichiometry it has approximately the energy density of HMX. Transmission electron microscopy indicated no ammonium perchlorate crystallites larger than 20 nm while near-edge soft x-ray absorption microscopy showed that nitrogen was uniformly distributed, at least on the scale of less than 80 nm. Small-angle neutron scattering studies were conducted on the material. Those results were consistent with historical ones for this class of nanostructured materials. The average skeletal primary particle size was on the order of 2.7 nm, while the nanocomposite showed the growth of small 1 nm size crystals of ammonium perchlorate with some clustering to form particles greater than 10 nm.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
15002503
Report Number(s):
UCRL-JC-136924
TRN: US0401906
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 31st International Annual Conference of ICT, Karlsruhe (DE), 06/27/2000--06/30/2000; Other Information: PBD: 15 Mar 2000
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ABSORPTION; AMMONIUM PERCHLORATES; CHEMISTRY; ENERGY DENSITY; EXPLOSIONS; MICROSCOPY; NEUTRONS; NITROGEN; PARTICLE SIZE; SCATTERING; SKELETON; STOICHIOMETRY; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Simpson, R L, Tillotson, T M, Hrubesh, L W, and Gash, A E. Nanostructured energetic materials derived from sol-gel chemistry. United States: N. p., 2000. Web.
Simpson, R L, Tillotson, T M, Hrubesh, L W, & Gash, A E. Nanostructured energetic materials derived from sol-gel chemistry. United States.
Simpson, R L, Tillotson, T M, Hrubesh, L W, and Gash, A E. Wed . "Nanostructured energetic materials derived from sol-gel chemistry". United States. https://www.osti.gov/servlets/purl/15002503.
@article{osti_15002503,
title = {Nanostructured energetic materials derived from sol-gel chemistry},
author = {Simpson, R L and Tillotson, T M and Hrubesh, L W and Gash, A E},
abstractNote = {Initiation and detonation properties are dramatically affected by an energetic material's microstructural properties. Sol-gel chemistry allows intimacy of mixing to be controlled and dramatically improved over existing methodologies. One material goal is to create very high power energetic materials which also have high energy densities. Using sol-gel chemistry we have made a nanostructured composite energetic material. Here a solid skeleton of fuel, based on resorcinol-formaldehyde, has nanocrystalline ammonium perchlorate, the oxidizer, trapped within its pores. At optimum stoichiometry it has approximately the energy density of HMX. Transmission electron microscopy indicated no ammonium perchlorate crystallites larger than 20 nm while near-edge soft x-ray absorption microscopy showed that nitrogen was uniformly distributed, at least on the scale of less than 80 nm. Small-angle neutron scattering studies were conducted on the material. Those results were consistent with historical ones for this class of nanostructured materials. The average skeletal primary particle size was on the order of 2.7 nm, while the nanocomposite showed the growth of small 1 nm size crystals of ammonium perchlorate with some clustering to form particles greater than 10 nm.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2000},
month = {Wed Mar 15 00:00:00 EST 2000}
}

Conference:
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