Characterization of HMX particles in PBX 9501

Conference · Mon Sep 01 04:00:00 EDT 1997

OSTI ID:542030

Skidmore, C B; Phillips, D S; Son, S F; Asay, B W

The particle size distribution and morphology of HMX (cyclotetramethylene-tetranitramine) in the plastic-bonded explosive, PBX 9501 (95% HMX and 5% polymeric binder, by weight), are important to understanding the micromechanical behavior of this material. This paper shows that the size distribution of the {open_quotes}as-received{close_quotes} HMX powder, as measured by light scattering, is not preserved through the processing operations of formulation into molding powder and subsequent consolidation through hydrostatic pressing. Morphological features such as cracking and twinning are examined using reflected light microscopy. This technique helps confirm and interpret the results of the particle size analysis. These results suggest that use of the particle size distribution of the {open_quotes}as-received{close_quotes} powder could potentially yield significant errors in detailed simulations of formulated materials.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 542030
• Report Number(s): LA-UR--97-2596; CONF-970707--; ON: DE97009103
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
CHEMICAL EXPLOSIVES
MORPHOLOGY
PARTICLE SIZE
POWDERS
PRESSING