Abstrakt:
This work has studied the effects of modifying agents on the behavior of industrially important
primary explosive – tetrazene. Namely, of interest were the powder characteristics (particle
size, bulk density and angle of repose) and sensitivities to external stimuli (friction, impact).
The agents consisted of a wide group of materials when the following ten were selected:
dextrin, sodium carboxymethylcellulose, gum arabic, sodium layrylsulfate, p-toluenesulfonic
acid, polystyrenesulfonic acid, 1,6-diaminohexane, polyacrylamide, sunflower lecithin, and
bone glue. No general correlation between the agent structure and the results were found,
but some partial behavior patterns could be identified. The bulk density ranged from
0.2 g∙cm–3 at the low end for unmodified samples to 0.5 g∙cm–3 at the highest improvement.
The angle of repose shifted from 60° for the unmodified form to 52° at best flowability (for
the ball ammonium perchlorate as a reference value of 30°). The effect on the friction
sensitivity is minuscule and all the samples had their F50 values within 3–7 N range. Three
different groups separated for the impact-stimulus behavior – unaffected, sensitivity lowered
to that of PETN or RDX, and erratic behavior. The particle size was generally in the 100 μm
scale, but the crystal habit varied significantly.
