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Title: Process for preparing energetic materials

Abstract

Sol-gel chemistry is used for the preparation of energetic materials (explosives, propellants and pyrotechnics) with improved homogeneity, and/or which can be cast to near-net shape, and/or made into precision molding powders. The sol-gel method is a synthetic chemical process where reactive monomers are mixed into a solution, polymerization occurs leading to a highly cross-linked three dimensional solid network resulting in a gel. The energetic materials can be incorporated during the formation of the solution or during the gel stage of the process. The composition, pore, and primary particle sizes, gel time, surface areas, and density may be tailored and controlled by the solution chemistry. The gel is then dried using supercritical extraction to produce a highly porous low density aerogel or by controlled slow evaporation to produce a xerogel. Applying stress during the extraction phase can result in high density materials. Thus, the sol-gel method can be used for precision detonator explosive manufacturing as well as producing precision explosives, propellants, and pyrotechnics, along with high power composite energetic materials.

Inventors:
 [1];  [1];  [2];  [3];  [1];  [1]
  1. Livermore, CA
  2. Tracy, CA
  3. Pleasanton, CA
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1034304
Patent Number(s):
8075716
Application Number:
US patent applicaiton 09/481,043
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C06 - EXPLOSIVES C06B - EXPLOSIVES OR THERMIC COMPOSITIONS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Simpson, Randall L, Lee, Ronald S, Tillotson, Thomas M, Hrubesh, Lawrence W, Swansiger, Rosalind W, and Fox, Glenn A. Process for preparing energetic materials. United States: N. p., 2011. Web.
Simpson, Randall L, Lee, Ronald S, Tillotson, Thomas M, Hrubesh, Lawrence W, Swansiger, Rosalind W, & Fox, Glenn A. Process for preparing energetic materials. United States.
Simpson, Randall L, Lee, Ronald S, Tillotson, Thomas M, Hrubesh, Lawrence W, Swansiger, Rosalind W, and Fox, Glenn A. Tue . "Process for preparing energetic materials". United States. https://www.osti.gov/servlets/purl/1034304.
@article{osti_1034304,
title = {Process for preparing energetic materials},
author = {Simpson, Randall L and Lee, Ronald S and Tillotson, Thomas M and Hrubesh, Lawrence W and Swansiger, Rosalind W and Fox, Glenn A},
abstractNote = {Sol-gel chemistry is used for the preparation of energetic materials (explosives, propellants and pyrotechnics) with improved homogeneity, and/or which can be cast to near-net shape, and/or made into precision molding powders. The sol-gel method is a synthetic chemical process where reactive monomers are mixed into a solution, polymerization occurs leading to a highly cross-linked three dimensional solid network resulting in a gel. The energetic materials can be incorporated during the formation of the solution or during the gel stage of the process. The composition, pore, and primary particle sizes, gel time, surface areas, and density may be tailored and controlled by the solution chemistry. The gel is then dried using supercritical extraction to produce a highly porous low density aerogel or by controlled slow evaporation to produce a xerogel. Applying stress during the extraction phase can result in high density materials. Thus, the sol-gel method can be used for precision detonator explosive manufacturing as well as producing precision explosives, propellants, and pyrotechnics, along with high power composite energetic materials.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 13 00:00:00 EST 2011},
month = {Tue Dec 13 00:00:00 EST 2011}
}

Works referenced in this record:

Midsized Drug Firms Bulk Up With Mergers
journal, September 2000


The sol-gel process
journal, January 1990