Modified Arrhenius kinetics for double base propellant decomposition: effect of water

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dc.contributor.authorRomero Jabalquinto, Alonso
dc.contributor.authorMai, Nathalie
dc.contributor.authorBelghiche, Samira
dc.contributor.authorGill, Philip P.
dc.date.accessioned2024-06-25T08:43:39Z
dc.date.available2024-06-25T08:43:39Z
dc.date.issued2024-05-31
dc.description.abstractNumerous studies have been conducted on the decomposition mechanisms of cellulose nitrate (NC), a polymer employed in double base (DB) rocket propellants. It is well known that storage temperature affects the lifetime of these energetic formulations. However, less studies have been published on the influence of water. This research examined the role of water on the stabiliser consumption rate during accelerated ageing of a DB rocket propellant, as well as the impact on the shelf life prediction of the energetic formulation. Different volumes of water (0.8, 1.6, 2 and 4 µl/g) were added to the propellant in sealed vials, which were then isothermally aged (70, 80, 90, 100 °C). Analyses of the stabiliser consumption showed a faster decomposition kinetics in presence of water which is indirectly linked to the shortening of the storage life of the NC based propellant by 35 %. For the conditions, an activation energy of 133 ± 4 kJ/mol was reported for the water catalytic decomposition mechanism. A numerical model that included water as a variable was reported to reduce the uncertainty in the determination of the service life of NC based propellant. International standards such as Allied Ordnance Publication 48 should not overlook the effect of water/moisture on the safety of ammunition containing NC and should implement a modified Arrhenius equation.en_UK
dc.description.sponsorshipThe authors would like to thank the Mexican Council of Sciences and Technology (CONACYT REFERENCE: 2020–000007–01EXTF-00468) and Cranfield University for supporting this work.en_UK
dc.identifier.citationRomero Jabalquinto A, Mai N, Belghiche S, Gill PP. (2024) Modified Arrhenius kinetics for double base propellant decomposition: effect of water. Polymer Degradation and Stability, Volume 227, September 2024, Article number 110846en_UK
dc.identifier.eissn1873-2321
dc.identifier.issn0141-3910
dc.identifier.urihttps://doi.org/10.1016/j.polymdegradstab.2024.110846
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/22558
dc.language.isoen_UKen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectDouble base rocket propellanten_UK
dc.subjectLife assessmenten_UK
dc.subjectStabilizer depletionen_UK
dc.subjectWater effecten_UK
dc.subjectModified Arrhenius kineticsen_UK
dc.titleModified Arrhenius kinetics for double base propellant decomposition: effect of wateren_UK
dc.typeArticleen_UK
dcterms.dateAccepted2024-05-28

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