Impact resistant rigid composite and method of manufacture

Details Impact resistant rigid composite and method of manufacture Impact resistant rigid composite and method of manufacture

B - Operations, Transporting

32

B

B32B 5/06 (2006.01) B29C 70/08 (2006.01) B29C 70/50 (2006.01) B32B 5/26 (2006.01) B32B 5/28 (2006.01) F41H 5/04 (2006.01)

Patent

CA 2419755

An impact resistant rigid composite has a plurality of fibrous layers, each of which comprise a network of filaments. The fibrous layers are disposed in a matrix, with elastomeric layer(s) therebetween. Prior to curing of the matrix, successive fibrous layers exhibit therebetween a peel resistance of at least about 3 g(cm. The composite has high rigidity combined with superior ballistic properties. When bonded at one or both surfaces to a hard plate selected from the group consisting of metals and ceramics, the composite affords increased protection against armor piercing projectiles.

Cette invention se rapporte à un composite rigide résistant aux impacts, qui comprend plusieurs couches fibreuses, comportant chacune un réseau de filaments. Ces couches fibreuses sont disposées en une matrice, avec une ou des couches élastomères entre elles. Avant le durcissement de la matrice, les couches de fibres successives présentent entre elles une résistance au pelage d'au moins 3g/cm au moins. Ce composite possède une rigidité élevée associée à des propriétés balistiques supérieures. Lorsqu'il est collé par une ou par les deux surfaces à une plaque dure, choisie dans le groupe des métaux et des céramiques, ce composite offre une protection accrue contre les projectiles perforants.

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