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Thermal decomposition of energetic materials 49. Thermolysis routes of mono- and diaminotetrazoles

✍ Scribed by A. Gao; Y. Oyumi; T.B. Brill

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
438 KB
Volume
83
Category
Article
ISSN
0010-2180

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✦ Synopsis

The gas products from rapid thermolysis of aminotetrazoles are discussed in terms of their potential to affect the burn rate of a composite propellant. 1,5-and 2,5-diaminotetrazole decompose by two competitive reactions. One reaction gives HCN, NH3, and N 2 and the other gives NtI2CN, NH3, and N 2. The observed product ratios reflect the competition of these two reactions. No melamine-like cyclic azines form from the self-reaction of NH2CN because NH2CN is rapidly evolved from the sample into the cool Ar atmosphere of the cell. Noncompetitive decomposition reactions occur with 1-and 5-aminotetrazole. 1-ATZ produces HCN, NH 3, and N 2 while 5-ATZ produces HN 3 and NH2CN. However, at 850 psia of Ar, 5-ATZ produces melamine-like cyclic azine and NH4N 3 aerosols. 5-ATZ is the only aminotetrazole that produces melamine-like products upon heating of the unconfined material.

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