On the Nature of Variations in Density and Composition within TATB-based Plastic Bonded Explosives

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Initiation of insensitive high explosives is affected by porosity in the 100 nm to micron size range. It is also recognized that as-pressed plastic bonded explosives (PBX) are heterogeneous in composition and density at much coarser length scale (10 microns-100 microns). However, variations in density and composition of these explosives have been poorly characterized. Here, we characterize the natural variations in composition and density of TATB-based PBX LX-17 with synchrotron radiation tomography and ultra small angle x-ray scattering. Large scale variations in composition occur as a result of binder enrichment at the prill particle boundaries. The pore fraction is twice ... continued below

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7 p. (0.2 MB)

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Kinney, J H; Willey, T M & Overturf, G June 27, 2006.

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Initiation of insensitive high explosives is affected by porosity in the 100 nm to micron size range. It is also recognized that as-pressed plastic bonded explosives (PBX) are heterogeneous in composition and density at much coarser length scale (10 microns-100 microns). However, variations in density and composition of these explosives have been poorly characterized. Here, we characterize the natural variations in composition and density of TATB-based PBX LX-17 with synchrotron radiation tomography and ultra small angle x-ray scattering. Large scale variations in composition occur as a result of binder enrichment at the prill particle boundaries. The pore fraction is twice as high in the prill particle as in the boundary. The pore distribution is bimodal, with small pores of 50-100 nm in radius and a broader distribution of pores in the 0.5-1.5 micron size range. The higher pore density within the prill particle is attributed to contact asperities between the crystallites that might inhibit complete consolidation and binder infiltration.

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7 p. (0.2 MB)

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PDF-file: 7 pages; size: 0.2 Mbytes

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  • Presented at: Detonation Symposium, Norfolk, VA, United States, Jul 23 - Jul 28, 2006

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  • Report No.: UCRL-CONF-222482
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 907871
  • Archival Resource Key: ark:/67531/metadc886355

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 27, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • April 17, 2017, 12:53 p.m.

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Kinney, J H; Willey, T M & Overturf, G. On the Nature of Variations in Density and Composition within TATB-based Plastic Bonded Explosives, article, June 27, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc886355/: accessed April 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.