FLUOROCARBON COMBUSTION STUDIES .V. TRIFLUOROCHLOROMETHANE- AND TRIFLUOROBROMOMETHANE-FLUORINE FLAMES

Burning velocities in a flat flame deflagration tube were measured, and the behaviour of flames was observed in CF3ClF2 mixtures and in CF3BrF2 mixtures diluted with Ar and He. Rich CF3ClF2 flames tend to become cellular. The cellular flames can propagate through a tube which quenches flat flames. The rich limit is near the region of maximum adiabatic equilibrium flame temperature. CF3BrF2 mixtures are highly reactive at room temperature. Lean mixtures explode spontaneously. Very rich mixtures propagate unusual dendritic flames. The burning velocities observed with highly diluted CF3BrF2 flames are proportional to the square roots of the thermal conductivities of the diluents. © 1969.