SYNTHESE ET EVALUATION DE TRIISOCYANATES POLYMERIQUES DANS LES LIANTS ET PROPERGOLS SOLIDES

Authors
  1. Tremblay, M.
  2. Perrault, G.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
Triisocyanates were isolated in two ways: first, by the reaction of an excess of diisocyanates on several triols, and secondly, by molecular distillation of commercial isocyanates. No improvement was observed in the mechanical properties of propellants or propellant binders made from these triisocyanates and hydroxyl-terminated polybutadienes compared to those made from mixtures of triols and disocyanates. The mechanical properties of polybutadiene propellant binders are improved by the addition of small amounts of low molecular weight diols to hydroxyl-terminated polybutadienes (PBBO and R45M). There is a change in the mechanical properties of R45M and PBBO binders with the variation in the structure of isocyanates.
Report Number
TN-2068/73 —
Date of publication
15 Dec 1973
Number of Pages
23
DSTKIM No
74-00998
CANDIS No
21451
Format(s):
Hardcopy;Originator's fiche received by DSIS

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