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US 2014/0110877 A1Published application
Thermoplastic toughening material and related method
AssigneeHexcel Composites Limited
InventorsStephen Mortimer, John Cawse
Life of this patent
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Abstract
A non-fibrous, apertured membrane comprises at least one thermoplastic polymeric material and has a discrete porous structure. The membrane is soluble in the thermoset matrix polymer of a composite material.
Claims20
A method for locating insoluble moieties between the fibrous layers of a composite material wherein said composite material comprises a plurality of fibrous layers and a thermosetting resin, said method comprising the steps of:
- providing a membrane comprising a thermoplastic polymer that dissolves in said thermosetting resin during curing of said resin and one or more insoluble moieties dispersed throughout said thermoplastic polymer wherein said insoluble moieties do not dissolve in said thermosetting resin during curing of said resin;
- and
- locating said membrane between said fibrous layers prior to curing of said thermosetting resin.
A method for locating insoluble moieties between the fibrous layers of a composite material according to claim 49 wherein said insoluble moieties are polyamide particles.
Dependencies are inferred from the claim text.