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Modification of the Physical Properties of an Extruded Double‐Base Propellant following solvent vapour exposure
Author(s) -
Barter I.,
Newell A.,
Privett G.
Publication year - 1990
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.19900150109
Subject(s) - solvent , propellant , materials science , ultimate tensile strength , extensometer , base (topology) , acetone , modulus , elongation , composite material , chemistry , analytical chemistry (journal) , chromatography , organic chemistry , mathematical analysis , mathematics
Samples of a rolled double‐base propellant were exposed to acetone vapour and the rate of solvent uptake observed. The solvent was subsequently removed and dynamic mechanical and extensometer measurements were made on the dried samples. The percentage elongation at break and the ultimate tensile strengths of the samples after solvent treatment were considerably above that of the control samples. The solvent uptake modified the relaxation behaviour of the samples and consequently the values of Young's modulus within the temperature range 30°C to 60°C. The solvent uptake was found to be non‐Fickian. Samples that had been thermally annealed prior to solvent vapour treatment were also examined. In general the behaviour was similar to that of unannealed samples but the scale of some of the changes and the rate of solvent uptake was modified.