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Title: The Elusive Coefficients of Thermal Expansion in PBX 9502

The Elusive Coefficients of Thermal Expansion in PBX 9502 PBX 9502 has been in war reserve service for over two decades. Ninety-five percent of the solid phase of this insensitive high explosive is composed of energetic crystallites designated as TATB (1,3,5-triamino-2,4,6-trinitrobenzene), held together by the remaining solid fraction--an inert, polymeric binder named Kel-F 800. The unusual combination of extreme insensitivity and adequate performance characteristics is not the only enigmatic feature of such TATB-based materials. In this report, we describe the difficulty and progress to date in reliably determining the coefficients of thermal expansion for consolidated components of PBX 9502. We provide bulk linear coefficient of thermal expansion (CTE) values for PBX 9502 consolidated to a density of approximately 1.890 g/cm{sup 3} and offer a simple set of equations for calculating dimensional changes for temperatures from 218 to 347 K (-55 C to 74 C).
Authors: ; ;
Publication Date:
OSTI Identifier:OSTI ID: 809945
Report Number(s):LA-14003
TRN: US200308%%329
DOE Contract Number:W-7405-ENG-36
Resource Type:Technical Report
Resource Relation:Other Information: PBD: 1 May 2003
Research Org:Los Alamos National Lab., NM (US)
Sponsoring Org:US Department of Energy (US)
Country of Publication:United States
Language:English
Subject: 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; 98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BINDERS; CHEMICAL EXPLOSIVES; KEL-F; PERFORMANCE; TATB; THERMAL EXPANSION