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dc.contributor.authorHagen, Trond Heldal
dc.contributor.authorJensen, Tomas Lunde
dc.contributor.authorUnneberg, Erik
dc.contributor.authorStenstrøm, Yngve
dc.contributor.authorKristensen, Tor Erik
dc.date.accessioned2017-09-28T10:19:15Z
dc.date.accessioned2017-09-29T08:39:08Z
dc.date.available2017-09-28T10:19:15Z
dc.date.available2017-09-29T08:39:08Z
dc.date.issued2015
dc.identifier.citationHagen TH, Jensen TL, Unneberg E, Stenstrøm YH, Kristensen TEH. Curing of Glycidyl Azide Polymer (GAP) diol using isocyanate, isocyanate-free, synchronous dual, and sequential dual curing systems. Propellants, explosives, pyrotechnics. 2015;40(2):275-284en_GB
dc.identifier.urihttp://hdl.handle.net/20.500.12242/647
dc.identifier.urihttps://ffi-publikasjoner.archive.knowledgearc.net/handle/20.500.12242/647
dc.descriptionHagen, Trond Heldal; Jensen, Tomas Lunde; Unneberg, Erik; Stenstrøm, Yngve; Kristensen, Tor Erik. Curing of Glycidyl Azide Polymer (GAP) diol using isocyanate, isocyanate-free, synchronous dual, and sequential dual curing systems. Propellants, explosives, pyrotechnics 2015 ;Volum 40.(2) s. 275-284en_GB
dc.description.abstractGlycidyl azide polymer (GAP) is an important energetic binder candidate for new minimum signature solid composite rocket propellants, but the mechanical properties of such GAP propellants are often limited. The mechanical characteristics of composite rocket propellants are mainly determined by the nature of the binder system and the binder-filler interactions. In this work, we report a detailed investigation into curing systems for GAP diol with the objective of attaining the best possible mechanical characteristics as evaluated by uniaxial tensile testing of non-plasticized polymer specimens. We started out by investigating isocyanate and isocyanate-free curing systems, the latter by using the crystalline and easily soluble alkyne curing agent bispropargylhydroquinone (BPHQ). In the course of the presented study, we then assessed the feasibility of dual curing systems, either by using BPHQ and isophorone diisocyanate (IPDI) simultaneously (synchronous dual curing), or by applying propargyl alcohol and IPDI consecutively (sequential dual curing). The latter method, which employs propargyl alcohol as a readily available and adjustable hydroxyl-telechelic branching agent for GAP through thermal triazole formation, gave rise to polymer specimens with mechanical characteristics that compared favorably with the best polymer specimens obtained from GAP diol and mixed isocyanate curatives. The glass transition temperature (Tg) of non-plasticized samples was heightened when triazole-based curing agents were included, but when plasticized with nitratoethylnitramine (NENA)plasticizer, Tg values were very similar, irrespective of the curing method.en_GB
dc.language.isoenen_GB
dc.titleCuring of Glycidyl Azide Polymer (GAP) diol using isocyanate, isocyanate-free, synchronous dual, and sequential dual curing systemsen_GB
dc.typeArticleen_GB
dc.date.updated2017-09-28T10:19:15Z
dc.identifier.cristinID1173063
dc.identifier.cristinID1173063
dc.identifier.doi10.1002/prep.201400146
dc.relation.projectIDForsvarets forskningsinstitutt: 130301
dc.source.issn0721-3115
dc.source.issn1521-4087
dc.type.documentJournal article
dc.relation.journalPropellants, explosives, pyrotechnics


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