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Internal plasticized glycidyl azide polyethers for solid propellant binders

: Hafner, Sven; Keicher, Thomas

Volltext urn:nbn:de:0011-n-4973099 (443 KByte PDF)
MD5 Fingerprint: 59176f71e485af6d2f4804d211ecb40d
Erstellt am: 26.6.2018

Fraunhofer-Institut für Chemische Technologie -ICT-, Pfinztal:
Energetic Materials. Synthesis, Processing, Performance : 49th International Annual Conference of ICT, June 26 - 29, 2018, Karlsruhe
Pfinztal: Fraunhofer ICT, 2018
Fraunhofer-Institut für Chemische Technologie (International Annual Conference) <49, 2018, Karlsruhe>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ICT ()

Copolymers of epichlorohydrin and n-alkyl substituted oxiranes were synthesized by the application of cationic ring-opening polymerization (CROP) using a BF3 complex as a catalyst and 1,4-butanediol as a co-initiator, followed by a subsequent azidation.
The introduction of nonpolar side chains shows an internal plasticizing effect by lowering the glass-transition temperatures (Tg) and the viscosities of the synthesized copolymers compared to a commercial sample of GAP. Due to the improved low temperature properties of the prepolymers, they are interesting candidates for the formulation of composite rocket propellants.