B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 53/60 (2006.01) F02K 9/32 (2006.01) F02K 9/34 (2006.01) F16L 59/02 (2006.01)
Patent
CA 2512105
The invention concerns a method for making a thermally protective coating for a propulsive unit structure, consisting in: continuously measuring and mixing (14) at least one polyurethane with a mixture of polymerizing agents wherein have been previously dispersed specific fillers; coating one rotating cylindrical support surface (2) with continuous casting of a sliver (18) in adjacent turns of the mixture thus obtained; and pre-polymerizing at ambient pressure the resulting coating such that the polyurethane is sufficiently polymerized to be mechanically stressed.
Procédé de réalisation d'un revêtement de protection thermique d'une structure de propulseur, le procédé consistant à : doser et mélanger de façon continue (14) au moins un polyuréthane avec un mélange d'agents de polymérisation dans lequel ont été préalablement dispersées des charges spécifiques ; revêtir une surface de support cylindrique (2) en rotation par la coulée en continu d'un ruban (18) en spires jointives de mélange ainsi obtenu ; et à pré-polymériser à pression ambiante le revêtement ainsi obtenu de sorte que le polyuréthane devienne suffisamment polymérisé pour être sollicité mécaniquement.
Bourdoncle Jacques
Coupard Alain
Sim & Mcburney
Snecma Propulsion Solide
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