Deflagration Behavior of PBX 9501 at Elevated Temperature and Pressure

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We report the deflagration behavior of PBX 9501 at pressures up to 300 MPa and temperatures of 150-180 C where the sample has been held at the test temperature for several hours before ignition. The purpose is to determine the effect on the deflagration behavior of material damage caused by prolonged exposure to high temperature. This conditioning is similar to that experienced by an explosive while it being heated to eventual explosion. The results are made more complicated by the presence of a significant thermal gradient along the sample during the temperature ramp and soak. Three major conclusions are: the ... continued below

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Maienschein, J L & Koerner, J G April 15, 2008.

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Description

We report the deflagration behavior of PBX 9501 at pressures up to 300 MPa and temperatures of 150-180 C where the sample has been held at the test temperature for several hours before ignition. The purpose is to determine the effect on the deflagration behavior of material damage caused by prolonged exposure to high temperature. This conditioning is similar to that experienced by an explosive while it being heated to eventual explosion. The results are made more complicated by the presence of a significant thermal gradient along the sample during the temperature ramp and soak. Three major conclusions are: the presence of nitroplasticizer makes PBX 9501 more thermally sensitive than LX-04 with an inert Viton binder; the deflagration behavior of PBX 9501 is more extreme and more inconsistent than that of LX-04; and something in PBX 9501 causes thermal damage to 'heal' as the deflagration proceeds, resulting in a decelerating deflagration front as it travels along the sample.

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PDF-file: 9 pages; size: 0.6 Mbytes

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  • Presented at: JANNAF 24th Propulsion Systems Hazards Subcommittee Meeting, Boston, MA, United States, May 12 - May 16, 2008

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  • Report No.: LLNL-PROC-402984
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 936981
  • Archival Resource Key: ark:/67531/metadc897632

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  • April 15, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 23, 2016, 12:28 p.m.

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Maienschein, J L & Koerner, J G. Deflagration Behavior of PBX 9501 at Elevated Temperature and Pressure, article, April 15, 2008; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc897632/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.