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Title: The Thermal and Microstructural Effect of Plasticizing HMX-Nitrocellulose Composites

Abstract

Thermal ignition via self-heating (cook-off) of cyclotetramethylene-tetranitramine (HMX)-containing plastic-bonded explosives (PBXs) is driven by the β → δ phase transition in the HMX, which is affected if not dominated by microstructure. Here, we studied the HMX-binder interface and phase transition for several variations of PBX 9404 (HMX with plasticized nitrocellulose [NC] binder). Neutron reflectometry was used to examine the interface under several conditions—pristine, after aging, and after thermal treatment. The initial interfacial structure depended on the plasticizer, but the interface homogenized over time. Thermal and optical analyses showed that all formulated materials had higher transition temperatures than neat HMX. This effect increased with NC content.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of California, Davis, CA (United States). Dept. of Chemical Engineering
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1351234
Report Number(s):
LA-UR-16-29348
Journal ID: ISSN 0737-0652
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Energetic Materials
Additional Journal Information:
Journal Volume: 36; Journal Issue: 1; Journal ID: ISSN 0737-0652
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; explosive; hmx; neutron; interface; nitrocellulose; phase; neutron reflectometry; PBX; phase transformation

Citation Formats

Yeager, John David, Watkins, Erik Benjamin, Duque, Amanda Lynn, and Majewski, Jaroslaw. The Thermal and Microstructural Effect of Plasticizing HMX-Nitrocellulose Composites. United States: N. p., 2017. Web. doi:10.1080/07370652.2017.1301597.
Yeager, John David, Watkins, Erik Benjamin, Duque, Amanda Lynn, & Majewski, Jaroslaw. The Thermal and Microstructural Effect of Plasticizing HMX-Nitrocellulose Composites. United States. doi:10.1080/07370652.2017.1301597.
Yeager, John David, Watkins, Erik Benjamin, Duque, Amanda Lynn, and Majewski, Jaroslaw. Wed . "The Thermal and Microstructural Effect of Plasticizing HMX-Nitrocellulose Composites". United States. doi:10.1080/07370652.2017.1301597. https://www.osti.gov/servlets/purl/1351234.
@article{osti_1351234,
title = {The Thermal and Microstructural Effect of Plasticizing HMX-Nitrocellulose Composites},
author = {Yeager, John David and Watkins, Erik Benjamin and Duque, Amanda Lynn and Majewski, Jaroslaw},
abstractNote = {Thermal ignition via self-heating (cook-off) of cyclotetramethylene-tetranitramine (HMX)-containing plastic-bonded explosives (PBXs) is driven by the β → δ phase transition in the HMX, which is affected if not dominated by microstructure. Here, we studied the HMX-binder interface and phase transition for several variations of PBX 9404 (HMX with plasticized nitrocellulose [NC] binder). Neutron reflectometry was used to examine the interface under several conditions—pristine, after aging, and after thermal treatment. The initial interfacial structure depended on the plasticizer, but the interface homogenized over time. Thermal and optical analyses showed that all formulated materials had higher transition temperatures than neat HMX. This effect increased with NC content.},
doi = {10.1080/07370652.2017.1301597},
journal = {Journal of Energetic Materials},
number = 1,
volume = 36,
place = {United States},
year = {2017},
month = {3}
}

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    Works referencing / citing this record:

    The Thermal and Microstructural Effect of Plasticizing HMX-Nitrocellulose Composites [Supplemental Data]
    dataset, March 2017

    • Yeager, John; Watkins, Erik; Higginbotham Duque, Amanda
    • Figshare-Supplementary information for journal article at DOI: 10.1080/07370652.2017.1301597, 1 avi file; 1 PDF
    • DOI: 10.6084/m9.figshare.4797892

    Effect of organic eutectic on nitrocellulose stability during artificial aging
    journal, June 2019


    Effect of organic eutectic on nitrocellulose stability during artificial aging
    journal, June 2019