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Experimental Measurements and Numerical Predictions of the Gasification of Finite Thickness Polymers.


pdf icon Experimental Measurements and Numerical Predictions of the Gasification of Finite Thickness Polymers. (154 K)
Ritchie, S. J.; Kashiwagi, T.

NISTIR 5904; October 1996.

National Institute of Standards and Technology. Annual Conference on Fire Research: Book of Abstracts. October 28-31, 1996, Gaithersburg, MD, 101-102 pp, 1996.

Available from:

National Technical Information Service
Order number: PB97-153514

Keywords:

fire research; fire science; gasification; thickness; burning rate; cone calorimeters

Abstract:

During polymer combustion, there are two general processes that influence the burning rate of the material; the flame zone heat feedback to the polymer surface and the corresponding gasification rate of the polymer. The two processes are directly coupled. This study focuses on the condensed-phase processes which affect the gasification rate. Presented are the results of an experimental and numerical study into the influence of sample thickness and back surface boundary condition on the gasification rate of thermoplastic polymer materials under non-flaming conditions. Typically, the influence of thickness is ignored in theoretical developments because of the simplicity or convenience in assuming a semi-infinite material. However, in real applications of polymers, a semi-infinite analysis may be inappropriate.