Pultrusion systems and process

B - Operations – Transporting – 29 – C

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B29C 47/00 (2006.01) B29C 63/00 (2006.01) B29C 65/00 (2006.01) B29D 7/00 (2006.01) C08J 3/00 (2006.01) C08K 3/34 (2006.01) C08L 75/00 (2006.01)

Patent

CA 2544326

Polyisocyanate-based reaction systems, a pultrusion process employing those systems to produce reinforced matrix composites, and to composites produced thereby. The polyisocyanate-based systems are mixing activated reaction systems that include a polyol composition, a catalyst composition which comprises a combination of at least two different metals in effective amounts, an optional chain extender or crosslinker, and a polyisocyanate. The polyisocyanate-based systems facilitate the practical use of higher line speeds in the manufacture of fiber reinforced thermoset composites via reactive pultrusion.

L'invention concerne des systèmes de réaction à base de polyisocyanate, un procédé de pultrusion utilisant ces systèmes pour produire des composites à matrice renforcée, ainsi que des composites produits à l'aide de ce procédé. Ces systèmes de réaction à base de polyisocyanate sont des systèmes de réaction activés lorsqu'ils sont mélangés, comprenant une composition de polyol, une composition de catalyseur comprenant un mélange d'au moins deux métaux différents en quantités suffisantes, éventuellement un allongeur de chaîne ou un réticulant, et un polyisocyanate. Ces systèmes à base de polyisocyanate permettent d'augmenter la vitesse de fabrication de composites thermodurcissables renforcés de fibres par pultrusion réactive.

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