Hexcel Composites Limited

Cytec Technology Corporation

Steve Mortimer

Jack D Boyd

John Leslie Cawse

Martin Richard Simmons

Dana Blair

Linas N Repecka

Guo Feng Xu

Neal Patel

Bertrand Germain

Steve Peake

Sarah Lasfargues

Clement Casaliggi

Emille Legoff

Emilie Legoff

Scott Thompson

John Cawse

Martin Simmons

One or more layers of structured thermoplastic polymer, such as a light weight veil of thermoplastic polymer fibers, are located within the interleaf zone of laminates that are composed of fibrous layers and thermosetting resin. The thermoplastic veils are used in the interleaf zones as a replacement for thermoplastic toughening particles. The structured thermoplastic polymer may be coated with a conductive material to improve electrical conductivity through the laminate.

Structured thermoplastic in composite interleaves

A structural panel comprising an internal core material having first and second opposing faces, first and second face sheets bonded to the first and second opposing faces respectively, wherein the panel comprises an open-structured sheet, interposed between a first face of the core material and its respective face sheet and the panel comprises less than 200 gsm adhesive.

Sandwich panels

A process for the manufacture of a cured composite material, the process comprising the steps of blending together a liquid curable resin and a curing agent having a melting point greater than 100&#xb0; C. to form a liquid blend of curable resin and curing agent, at least partially impregnating a structural fiber arrangement with the blended curable resin and curing agent to form a curable composite material, followed by curing the composite material by exposure to elevated temperature and at a pressure of no greater than 3 bar absolute to form a cured composite material.

Composite materials

The invention relates to a resin curing agent having the formula (I), wherein Rto Rare each individually selected from linear or branched Cto Calkyl, a process for its manufacture, blends of the reaction products, and two-component curable resin systems. 

Curing agents

Manufacture of void-free laminates and use thereof

Growing community of inventors

St. Ives, United Kingdom

Steve Mortimer