PETN Coarsening - Predictions from Accelerated Aging Data

Journal Article · Wed Mar 30 04:00:00 EDT 2011 · Propellants, Explosives, Pyrotechnics

DOI:https://doi.org/10.1002/prep.201000106· OSTI ID:1226941

Maiti, Amitesh ^[1]; Gee, Richard H. ^[1]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Ensuring good ignition properties over long periods of time necessitates maintaining a good level of porosity in powders of initiator materials and preventing particle coarsening. To simulate porosity changes of such powder materials over long periods of time a common strategy is to perform accelerated aging experiments over shorter time spans at elevated temperatures. In this paper we examine historical accelerated-aging data on powders of Pentaerythritol Tetranitrate (PETN), an important energetic material, and make predictions for long-term aging under ambient conditions. Lastly, we develop an evaporation-condensation- based model to provide some mechanistic understanding of the coarsening process.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE; BWXT Pantex
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 1226941
• Report Number(s): LLNL-JRNL--446376
• Journal Information: Propellants, Explosives, Pyrotechnics, Journal Name: Propellants, Explosives, Pyrotechnics Journal Issue: 2 Vol. 36; ISSN 0721-3115
• Publisher: Wiley
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
Coarsening
PETN