Kenneth L. Kosanke, B. J. Kosanke, Clive Jennings-White's Lecture Notes for Pyrotechnic Chemistry (Pyrotechnic PDF

By Kenneth L. Kosanke, B. J. Kosanke, Clive Jennings-White

ISBN-10: 1889526169

ISBN-13: 9781889526164

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12 *v? 0 Potassium Dichromate (Percent) Adding 4% potassium dichromate doubled burn rate.

Easily ignited (Ea is low). • Generates abundant thermal energy (AHr is high). • Not overly sensitive to accidental ignition (Ea is not too low). AHr = Heat of reaction, the amount of energy produced by a tiny sample of pyrotechnic composition. Ef Activation Energy Heat of Reaction = Energy feedbackJ the amount of energy produced by a pyrotechnic composition that is fed back to the unburned composition. Thus Ef = AHr • Ffb, where Ffb is the fraction of energy fed back. A Graph Reaction Progress E Efficient energy feedback) for example: a Ef Sketch = Thermally conductive, = Dark colored (black), or Present Burning Surface Initial Burning Surface = Generates molten slag.

Page-3 - 19 ©Journal oFPyrolechnics 2004 Page-3 - 20 ©Journal of Pyrotechnics 2004 I Page-3 - 19 Page - 3 - 20 ©Journal of Pyrotechnics 2004 PRIME "SKIN" EFFECT PRIME APPLICATION TECHNIQUES Dusting: Sprinkle prime on surface of wet (damp) composition, frequently used on cut stars. ) ©Journal of Pyrotechnics 2004 Problem: If primes are applied when too wet, a skin of "non-flammable" binder can form, rendering the prime almost fire proof. Mechanism of skin formation: Layering: Slurry: Coat a heavy layer of prime on the surface of rolled (round) stars at completion of star making.

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Lecture Notes for Pyrotechnic Chemistry (Pyrotechnic Reference) by Kenneth L. Kosanke, B. J. Kosanke, Clive Jennings-White


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