Mixed Layer Pyrolysis Model for Polypropylene.
Mixed Layer Pyrolysis Model for Polypropylene.
(981 K)
Butler, K. M.
Fire Safety Science. Proceedings. Sixth (6th)
International Symposium. International Association for
Fire Safety Science (IAFSS). July 5-9, 1999, Poitiers,
France, Intl. Assoc. for Fire Safety Science, Boston,
MA, Curtat, M., Editor(s), 313-324 pp, 2000.
Keywords:
fire research; fire safety; fire science; polypropylene;
pyrolysis models; gasification; equations
Abstract:
A one-dimensional model describing the melting,
degradation, and bubbling behavior of polypropylene
exposed to a high heat flux is presented. The region of
vigorous bubbling observed in experiment is represented
as a mixed layer of uniform temperature. Temperature
profiles and thicknesses of solid, melt, and mixed
layers are determined by solving conservation equations
supplemented by simple models of turbulent mixing. The
results of the model with and without a mixed layer are
compared with experiment.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899