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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Печать: 2150-766X
ISSN Онлайн: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.v4.i1-6.840
pages 906-917

CHARACTERIZATION OF CONDENSED-PHASE CHEMICAL REACTIONS OF RDX AND NITRAMINE-BASED PROPELLANTS

Eric Boyer
The Pennsylvania State University, University Park, Pennsylvania 16802, USA
Yeu-Cherng Lu
Mechanical Engineering Department, The Pennsylvania State University, University Park, PA 16802

Краткое описание

A microprobe mass spectrometer was used to measure decomposition products from the subsurface region of two RDX-based propellants: XM39 and one (MZ) containing an energetic plasticizer. The microprobe was inserted into a hole drilled axially in the centerline of each propellant sample. Gaseous species released in the subsurface region were collected in the cavity and sucked into the probe and analyzed. Tests were conducted in Ar at 1 and 3 atm, with a CO2 laser external heat flux of 100, 200, and 275 W/cm2. An insignificant amount of solid-phase decomposition products was detected for MZ, and only a very minute amount of OST was detected from XM39 at very low heat flux conditions. At the time of bum through, the major species detected had masses of 30, 28,44, and 27 amu, believed to be CH2O, CO, N23O, and HCN. These products suggest that the RDX decomposition pathway to form CH2O and N2O is more dominant for the condensed-phase reactions at the operating conditions studied. The binders of these two propellants showed relatively inactive behavior under the conditions tested.


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