Pressure dependence of sound velocity, equation of state, and structure of vitons

ORAL

Abstract

Viton A500 and carbon-filled composite Viton are important materials as binders for high explosives and as seals over a wide temperature range. These applications require a thorough understanding of the elastic, thermodynamic, and structural properties over a broad pressure range. Using a Paris-Edinburgh press, the sound velocity measurements were measured by ultrasonic pulse-echo method and x-ray radiography up to a pressure of 7 GPa. Pressure effects on the short and medium range order in the amorphous component and the residual a crystalline component were determined using in-situ x-ray diffraction. The results were compared with measurements on pure polyvinylidene fluoride (PVDF), Sylgard, and polychlorotrifluoroethylene (Kel-F). SEM compositional analysis of Viton A500, its carbon-filled composite, and pure PVDF sample was performed to determine sample homogeneity and the origin of measured residual crystallinity.

*This work was supported by DOE-NNSA (DE-NA0003975). Portions of this work were performed at HPCAT (Sector 16) supported by (DOE) under Contract No. DE-AC02-06CH11357. SEM work was performed at RRC-UIC.

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Presenters

  • Jonathan K Simon

    • University of Illinois at Chicago

Authors

  • Charlie M Zoller

    • University of Illinois at Chicago
    • Department of Physics, University of Illinois Chicago

  • Jonathan K Simon

    • University of Illinois at Chicago

  • Rostislav Hrubiak

    • Argonne National Laboratory
    • HPCAT, X-Ray Science Division, Argonne National Laboratory

  • Curtis Keeney-Benson

    • HPCAT
    • HPCAT, X-Ray Science Division, Argonne National Laboratory

  • Muhtar Ahart

    • University of Illinois at Chicago
    • Carnegie Inst of Washington
    • University of Illinois Chicago
    • Department of Physics, University of Illinois at Chicago

  • Russell J Hemley

    • University of Illinois at Chicago
    • University of Illinois Chicago
    • Departments of Physics, Chemistry, and Earth and Environmental Sciences, University of Illinois Chicago
    • Department of Physics and Chemistry, University of Illinois Chicago, 845, W. Taylor Street, Chicago, IL 60607
    • Departments of Physics, Chemistry, and Earth and Environmental Sciences, University of Illinois at Chicago