Thermal and Microscopical Study of the Condensed Phase Behavior of Nitrocellulose and Double Base Materials

  • Scott I. Morrow

Abstract

Methods were devised for using a polarizing microscope to study the condensed phase behavior of propellants. Some of the phenomena associated with this condition for nitrocellulose, catalyzed nitrocellulose, and double base propellant both with and without catalysts was elucidated. At the same time techniques of differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and thin layer chromatography (TLC) were brought to bear on the problem. Optically and thermally measurable differences in catalyzed and uncatalyzed materials tended to be small and were probably not as great, for instance, as is to be found with certain cases of composite propellants. Nevertheless, clues were obtained as to ways the catalysts were affecting condensed phase behavior. Unraveling these problems fully remains a formidable task.

Keywords

Differential Scanning Calorimetry Differential Thermal Analysis Phase Behavior Solid Propellant Polarize Microscope 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Kirby, C.E., “Investigation of Flameless Combustion Mechanism of M-2 Double Base Propellant”, April 1971, NASA TND-6105, NASA, Washington, D.C.Google Scholar
  2. 2.
    Waesche, R.H., “Research Investigation of the Decomposition of Composite Solid Propellants”, FR H910476–36, July 1969, United Aircraft Research Laboratories, East Hartford, Connecticut.Google Scholar
  3. 3.
    Freeman, E.S., and Rudioff, W.K., “Mechanisms of Solid State Catalytic Processes Related to Combustion”, FR C6107–15, Contract No. DAM 21–67-C-0798, July 1968, IIT Research Institute, Chicago, Illinois.Google Scholar
  4. 4.
    Morrow, S.I., “A DTA-Light Photometer Polarizing Microscope System for Hot Stage Microscopy”, The Microscope, January-April 1973, Vol. 21 No. 1, pg. 29–38.Google Scholar
  5. 5.
    Morrow, S.I., “Microscopical Combustion Studies of Nitrocellulose Thin Films in Pressurized Capillary Tubes”, presented at Inter/Micro ‘73, Cambridge University, Cambridge, England, 16–20 July 1973; in print in The Microscope.Google Scholar
  6. 6.
    Lenchitz, C., private communication, this laboratory 1973.Google Scholar
  7. 7.
    Kubota, N., Ohlemiller, T.J., Caveny, L.H., and Summerfield, M., “The Mechanism of Super-Rate Burning of Catalyzed Double Base Propellants”, Aerospace and Mechanical Sciences Report No. 1087, Requisition NR 092–516/8–8–72 (473) March 1973.Google Scholar

Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • Scott I. Morrow
    • 1
  1. 1.Propellant DivisionFeltman Research LaboratoryDoverUSA

Personalised recommendations