Hybrid veil as interlayer in composite materials
AssigneeCytec Industries Inc.
InventorsCarmelo Luca Restuccia, Robert Blackburn
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Abstract
A flexible, self-supporting hybrid veil that is permeable to liquid and gas. The hybrid veil includes: (a) intermingled, randomly arranged fibres in the form of a nonwoven structure; (b) particles dispersed throughout the nonwoven structure, wherein a majority of the particles are penetrating through the thickness of the nonwoven structure; and (c) a polymeric or resinous binder present throughout the veil. Such hybrid veil can be incorporated into composite laminates, prepregs, fabrics and fibrous preforms.
Claims17
A hybrid veil that is flexible, self-supporting, and is permeable to liquid and gas, comprising:
- (a) intermingled, randomly arranged carbon fibres in the form of a nonwoven structure;
- (b) polymeric particles dispersed throughout the nonwoven structure, wherein a majority of the polymeric particles are penetrating through the thickness of the nonwoven structure;
- and
- (c) a polymeric or resinous binder present throughout the veil,
- wherein each of the polymeric particles consists of one or more thermoplastic polymers, or one or more elastomeric polymers, or crosslinked thermoplastic polymers, and
- wherein the binder is present in an amount of 5% to 25% by weight, based on the total weight of the veil.
Dependencies are inferred from the claim text.