Slow burning heat generating structure

A heat generating structure includes a substrate, a coating and a polymeric material. The substrate comprises a first material. The coating comprises a second material, different from the first material that covers at least a portion of the substrate. The coating and substrate, upon being thermally...

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Bibliographic Details
Main Authors IRWIN DAVID F, KELLETT RICHARD M
Format Patent
LanguageEnglish
Published 17.12.2013
Subjects
CHEMICAL LIGHTERS
CHEMISTRY
DETONATING OR PRIMING DEVICES
EXPLOSIVES
EXPLOSIVES OR THERMIC COMPOSITIONS
FUSES
MANUFACTURE THEREOF
MATCHES
METALLURGY
PYROPHORIC COMPOSITIONS
USE OF SINGLE SUBSTANCES AS EXPLOSIVES
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Summary:A heat generating structure includes a substrate, a coating and a polymeric material. The substrate comprises a first material. The coating comprises a second material, different from the first material that covers at least a portion of the substrate. The coating and substrate, upon being thermally energized to their minimum alloying temperature, react in a first exothermic reaction that is an alloying reaction. The relative quantities of the substrate and coating are such that the first exothermic reaction yields a first amount of exothermic energy that is insufficient to cause self-sustained propagation of the first exothermic reaction. The polymeric material covers substantially all of the substrate and coating, and is different from the first and second materials. The polymeric layer, upon being thermally energized, reacts with at least one of the substrate and coating in a second exothermic reaction. The second exothermic reaction yields a second amount of exothermic energy that, when combined with the first amount of exothermic energy, is sufficient to propagate the first exothermic reaction in a self-sustained manner.
Bibliography:Application Number: US20100877699