Science and Technology of Energetic Materials

Vol.68, No.5 (2007)

Research paper

Effect of additional copper(II) oxide on the combustion of 5-amino-1H-tetrazole and lithium perchlorate mixtures (II)
- Thermal analyses of 5-amino-1H-tetrazole, lithium perchlorate, and copper(II) oxide -
Yasuyoshi Miyata, Shingo Date, and Kazuo Hasue


The authors have previously reported that 5-amino-1H-tetrazole (5-ATZ) / lithium perchlorate LiClO4 mixture has displayed high linear burning rates and generated large amount of gas per unit mass. It has also been clarified that adding small amount of copper(II) oxide CuO to the mixture has enhanced the linear burning rates even though the adiabatic flame temperatures have decreased. In this study, factors leading to the enhancement of linear burning rates were examined through thermal analyses of the mixtures. According to the thermal analyses, decomposition of 5-ATZ was found to initiate prior to the decomposition of LiClO4, and the addition of CuO has caused a drastic decrease in the initiation temperature for exothermic reaction of 5-ATZ / LiClO4 mixture. Therefore, through addition of a small portion of CuO, exothermic reactions between 5-ATZ and CuO may have initiated at a relatively low temperature, and then from this exothermic reaction, the reactions of 5-ATZ / LiClO4 mixtures may have initiated at a lower temperature, leading to an increase in the linear burning rate. Furthermore, an increase in the heat of exothermic decomposition through CuO addition may have contributed to an increase in the linear burning rate.

> Full text (Open access*)


5-Amino-1H-tetrazole, Lithium perchlorate, Copper(II) oxide, TG-DTA analyses, Mass spectrometry.

© Copyright 1999-2017 Japan Explosives Society. All right reserved.