Predicting the Ignition Time and Burning Rate of Thermoplastics in the Cone Calorimeter. January 1995-June 1995.
Predicting the Ignition Time and Burning Rate of
Thermoplastics in the Cone Calorimeter. January
Hopkins, D., Jr.
NIST GCR 95-677; 191 p. September 1995.
Sponsor:National Institute of Standards and Technology,
Available from: National Technical Information Service
(NTIS), Technology Administration, U.S. Department of
Commerce, Springfield, VA 22161.
1-800-553-6847 or 703-605-6000;
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cone calorimeters; heat flux; nylon 6 (trademark);
polyethylenes; polypropylene; thermoplastics; wood
Ignition and burning rate data are developed for Nylon
6/6, Polyethylene, and Polypropylene in a Cone
Calorimeter heating assembly. The objective is to
examine a testing protocol that leads to the prediction
of ignition and burning rate for thermoplastics from
Cone data. The flame heat flux is not measured, but is
inferred from Cone data. The constancy of the flame
heat flux for thermoplastics in the Cone calorimeter is
due to the geometry of the flame. The burning rate
model is shown to yield good accuracy in comparison to
measured transient values. Ignition and burning rate
data are developed for Redwood and Red Oak in a Cone
Calorimeter heating assembly. Measurements of the flame
plus external heat flux are presented. The data is
intended to be used for future work to develop a testing
protocol and burning rate model for charring materials.