NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A Model For The Burning of TeflonTeflon has been identified as suitable material for use in oxygen-enriched atmospheres because of its low specific enthalpy of combustion that is, less than 1500 cal/gram. However, once ignited, Teflon burns in a heterogeneous reaction until total consumption or depletion of oxygen occurs. A model is developed for the burning of Teflon in pure, high-pressure oxygen, 3.4 to 68.9 MPa. The Teflon polymer chain dissociates via monomer units due to pyrolysis. These monomer units diffuse to the surface due to free convection. The model consists of coupled mass and energy balances for the polymer and an energy balance for the free convection of product gases. The model is used to obtain appropriate kinetic parameters for the dissociation and surface reactions. The model is validated against experimental measurements of Teflon discs supported on aluminum rods (2216) at oxygen pressures of 3.4, 6.8, 34.4, and 68.9 MPa. The model simulates the temperature distribution in the product gases above burning Teflon.
Document ID
20000102417
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Waller, Jess M.
(Allied-Signal Technical Services Corp. Las Cruces, NM United States)
Wilson, D. Bruce
(Wilson (D. Bruce) Mesilla Park, NM United States)
Beeson, Harold D.
(White Sands Test Facility Las Cruces, NM United States)
Fries, Joseph
Date Acquired
August 19, 2013
Publication Date
January 1, 2000
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: 9th International Symposium on Flammability and Sensitivity of Materials
Location: Paris,
Country: France
Start Date: September 28, 2000
End Date: September 29, 2000
Sponsors: American Society for Testing and Materials
Funding Number(s)
CONTRACT_GRANT: NAS9-95682
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available