C - Chemistry – Metallurgy – 06 – B
Patent
C - Chemistry, Metallurgy
06
B
C06B 21/00 (2006.01) C06B 23/00 (2006.01)
Patent
CA 2204840
This is an invention related to the production of composite pyrotechnic materials through continuous processing. In a mixer (1), a thermosetting liquid binder (3) is mixed with a thickener (4) to obtain a viscous premix (2) which is non-reactive at ambient temperature and can then be mixed with oxidizers (17) to yield, after extrusion and cutting, intermediate products (24) which are not yet set but do possess stable geometric sides. The structure of the intermediate products (24) is later hardened through setting of the binder in an oven (26). The invention makes possible the industrial production, through continuous processing, of small composite pyrotechnic charges which are set and are free of "pot life" constraints because the binder does not change at ambient temperature.
La présente invention se rapporte au domaine de la fabrication en continu de produits pyrotechniques composites. Dans un mélangeur (1) on mélange un liant liquide (3) thermodurcissable avec une charge épaississante (4) de manière à obtenir un pré-mélange (2) visqueux et non réactif a température ambiante qui peut être ensuite mélangé à des charges oxydantes (17) pour donner, après extrusion et découpage, des produits intermédiaires (24) non encore réticulés mais possèdant des côtés géometriques stables. La structure des produits (24) est figée ultérieurement par réticulation du liant dans un four (26). L'invention permet la fabrication industrielle continue en série de petits chargements pyrotechniques composites réticulés sans contrainte de "vie de pot" puisque le liant est non évolutif à température ambiante.
Lefumeux Alain
Wiencek Dominique
Goudreau Gage Dubuc
Snpe Materiaux Energetiques
Societe Nationale Des Poudres Et Explosifs
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