What is it about?
New formulations of nitrocellulose-based propellants were evaluated aiming less-toxicity-and-less-erosivity. Three original ingredients of M-14 propellant – dinitrotoluene, dibutyl phthalate, and diphenylamine – were replaced. The new formulations, with ballistic performances similar to M-14, were based on ethylcentralite, akardite-II, RDX, diethylene glycol dinitrate, triethylene glycol dinitrate, and acetyl tributyl citrate (ATBC). The toxicities of the crude ingredients were analyzed. The H2 content in the combustion products was a key point in the analysis. The best results were found to the compositions based on ATBC and akardite-II only.
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Why is it important?
The work can be used to guide future works related to new formulations of propellants.
Perspectives
The replacements focused on the reduction of the toxicity, the maintenance of the ballistic performance and the reduction of the gun barrel erosion. The evaluation of the toxicity considered only the ingredients in their crude form because we are especially interested in manufacturing operations.
RODRIGO RODRIGUES
Instituto Militar de Engenharia
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This page is a summary of: Combined evaluation of nitrocellulose-based propellants: toxicity, performance, and erosivity, Journal of Energetic Materials, May 2019, Taylor & Francis,
DOI: 10.1080/07370652.2019.1606867.
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