Coefficient of Thermal Expansion Evolution during Ratchet Growth of PBX 9502 and Neat TATB
Abstract
The Plastic-Bonded Explosive (PBX) 9502 is comprised of the insensitive high explosive TATB (triamino trinitrobenzine) crystals coated in FK-800 polymer binder and isostatically pressed. The TATB crystals have a graphitic, plate-like morphology and possess significant thermal and mechanical anisotropy. Compactions of neat TATB or TATB-based composites (like PBX 9502) have been shown to have TATB crystals that are oriented during the pressing process giving rise to TATB texture and resulting in micro- and macro-scale anisotropy of the compaction. Thermal cycling of the compactions results in irreversible volume expansion (or ratchet growth) likely by creating stress points on the microscale. However, the actual mechanism behind this expansion is not fully understood. Previous characterization of the ratchet growth phenomenon has focused on the magnitude of the irreversible strain as measured before and after a thermal cycle. In the work presented here, we analyze the evolving thermal expansion behavior during the ascending and descending temperature ramps and compare differences observed due to the presence/absence of binder in the compaction.
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1874198
- Report Number(s):
- LA-UR-21-30683
Journal ID: ISSN 0721-3115
- Grant/Contract Number:
- 89233218CNA000001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Propellants, Explosives, Pyrotechnics
- Additional Journal Information:
- Journal Volume: 47; Journal Issue: 5; Journal ID: ISSN 0721-3115
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; CTE, ratchet growth, TATB, PBX 9502; irreversible expansion
Citation Formats
Woznick, Caitlin S., Graff Thompson, Darla, and Scott, Sidney J. Coefficient of Thermal Expansion Evolution during Ratchet Growth of PBX 9502 and Neat TATB. United States: N. p., 2022.
Web. doi:10.1002/prep.202100322.
Woznick, Caitlin S., Graff Thompson, Darla, & Scott, Sidney J. Coefficient of Thermal Expansion Evolution during Ratchet Growth of PBX 9502 and Neat TATB. United States. https://doi.org/10.1002/prep.202100322
Woznick, Caitlin S., Graff Thompson, Darla, and Scott, Sidney J. Fri .
"Coefficient of Thermal Expansion Evolution during Ratchet Growth of PBX 9502 and Neat TATB". United States. https://doi.org/10.1002/prep.202100322. https://www.osti.gov/servlets/purl/1874198.
@article{osti_1874198,
title = {Coefficient of Thermal Expansion Evolution during Ratchet Growth of PBX 9502 and Neat TATB},
author = {Woznick, Caitlin S. and Graff Thompson, Darla and Scott, Sidney J.},
abstractNote = {The Plastic-Bonded Explosive (PBX) 9502 is comprised of the insensitive high explosive TATB (triamino trinitrobenzine) crystals coated in FK-800 polymer binder and isostatically pressed. The TATB crystals have a graphitic, plate-like morphology and possess significant thermal and mechanical anisotropy. Compactions of neat TATB or TATB-based composites (like PBX 9502) have been shown to have TATB crystals that are oriented during the pressing process giving rise to TATB texture and resulting in micro- and macro-scale anisotropy of the compaction. Thermal cycling of the compactions results in irreversible volume expansion (or ratchet growth) likely by creating stress points on the microscale. However, the actual mechanism behind this expansion is not fully understood. Previous characterization of the ratchet growth phenomenon has focused on the magnitude of the irreversible strain as measured before and after a thermal cycle. In the work presented here, we analyze the evolving thermal expansion behavior during the ascending and descending temperature ramps and compare differences observed due to the presence/absence of binder in the compaction.},
doi = {10.1002/prep.202100322},
journal = {Propellants, Explosives, Pyrotechnics},
number = 5,
volume = 47,
place = {United States},
year = {Fri Feb 25 00:00:00 EST 2022},
month = {Fri Feb 25 00:00:00 EST 2022}
}
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Works referenced in this record:
Time-Evolution of TATB-Based Irreversible Thermal Expansion (Ratchet Growth)
journal, July 2015
- Graff Thompson, Darla; Schwarz, Ricardo B.; Brown, Geoff W.
- Propellants, Explosives, Pyrotechnics, Vol. 40, Issue 4
Growth of 1,3,5-Triamino-2,4,6-trinitrobenzene (TATB) I. Anisotropic thermal expansion
journal, March 1979
- Kolb, John R.; Rizzo, H. F.
- Propellants, Explosives, Pyrotechnics, Vol. 4, Issue 1
Model for ratchet growth in PBX 9502
journal, November 2019
- Schwarz, R. B.
- Acta Materialia, Vol. 180
Self-consistent modeling of the influence of texture on thermal expansion in polycrystalline TATB
journal, September 2014
- Luscher, D. J.; Buechler, M. A.; Miller, N. A.
- Modelling and Simulation in Materials Science and Engineering, Vol. 22, Issue 7
Growth of 1,3,5-Triamino-2,4,6,-Trinitrobenzene (TATB). II. Control of growth by use of high Tg polymeric binders
journal, April 1981
- Rizzo, H. F.; Humphrey, J. R.; Kolb, J. R.
- Propellants, Explosives, Pyrotechnics, Vol. 6, Issue 2
Irreversible volume growth in polymer-bonded powder systems: Effects of crystalline anisotropy, particle size distribution, and binder strength
journal, March 2008
- Maiti, Amitesh; Gee, Richard H.; Hoffman, D. Mark
- Journal of Applied Physics, Vol. 103, Issue 5
The Effect of Shear Strain on Texture in Pressed Plastic Bonded Explosives
journal, May 2013
- Schwarz, Ricardo B.; Brown, Geoffrey W.; Thompson, Darla G.
- Propellants, Explosives, Pyrotechnics, Vol. 38, Issue 5
Thermal Cycling and Ratchet Growth of TATB and PBX 9502
journal, May 2019
- Thompson, Darla Graff; Woznick, Caitlin; DeLuca, Racci
- Propellants, Explosives, Pyrotechnics, Vol. 44, Issue 7
Mesoscale modeling of irreversible volume growth in powders of anisotropic crystals
journal, June 2007
- Gee, Richard H.; Maiti, Amitesh; Fried, Laurence E.
- Applied Physics Letters, Vol. 90, Issue 25
Dynamic mechanical and thermal analysis of crystallinity development in Kel-F 800 and TATB/Kel-F 800 plastic bonded explosives
journal, December 1989
- Hoffman, D. Mark; Matthews, Florida M.; Pruneda, Cesar O.
- Thermochimica Acta, Vol. 156, Issue 2
The Effects of TATB Ratchet Growth on PBX 9502
journal, October 2010
- Thompson, Darla G.; Brown, Geoff W.; Olinger, Bart
- Propellants, Explosives, Pyrotechnics, Vol. 35, Issue 6
Coefficient of Thermal Expansion during Ratchet Growth of TATB Compactions
journal, November 2020
- Graff Thompson, Darla; Woznick, Caitlin S.; DeLuca, Racci
- Propellants, Explosives, Pyrotechnics, Vol. 45, Issue 12
Using Neutron Diffraction to Investigate Texture Evolution During Consolidation of Deuterated Triaminotrinitrobenzene (d-TATB) Explosive Powder
journal, May 2017
- Luscher, Darby; Yeager, John; Clausen, Bjørn
- Crystals, Vol. 7, Issue 5
Thermal cycling and ratchet growth of as-pressed TATB pellets
conference, January 2018
- Woznick, Caitlin S.; Thompson, Darla Graff; DeLuca, Racci
- SHOCK COMPRESSION OF CONDENSED MATTER - 2017: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, AIP Conference Proceedings