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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.142 SNIP: 0.16 CiteScore™: 0.29

ISSN 印刷: 2150-766X
ISSN オンライン: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.v9.i4.50
pages 351-364

CHARACTERIZATION AND COMPARISON OF TWO HYDROXYL-TERMINATED POLYETHER PREPOLYMERS

Rodrigo I. Caro
Department of Research, Innovation and Development, Fábricas y Maestranzas del Ejército de Chile, Chile
John M. Bellerby
Department of Applied Science, Security and Resilience, Cranfield University Defense Academy, Shrivenham, Swindon SN6 8LA

要約

Composite rocket propellants with improved insensitive munitions (IM) characteristics can be produced using cross-linked hydroxyl-terminated polyether (HTPE) binders and are potential alternatives to hydroxyl-terminated polybutadiene (HTPB) compositions. Some characteristics of propellants based on the HTPE binder have been presented, but there has been no report on the comprehensive chemical characterization of the prepolymer. In this paper we report a preliminary study on the characterization and comparison of two different HTPE prepolymers, one synthesized in our laboratory and the other obtained from a commercial source. Analyses were carried out on the two materials to determine molecular weight, molecular structure, glass transition temperature (Tg), melting temperature (Tm), impurities, and viscosity. These properties were determined using a range of techniques, including size-exclusion chromatography (SEC), nuclear magnetic resonance (NMR) spectroscopy, differential scanning calorimetry (DSC), gas chromatography-mass spectrometry (GC-MS), and Fourier transform infrared (FTIR) spectroscopy.


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