Weldable thermoplastic composite composites
AssigneeArkema Inc.
InventorsNathan J. Bachman, Robert J. Barsotti
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Abstract
The invention relates to the use of a low Tg compatible resin as an adhesive layer for the welding of a thermoplastic composite structure to a thermoplastic or thermoset structure. The invention is especially good for the welding of large parts, such as wind turbine halves and spar caps. A useful thermoplastic composite is one formed by the infusion and curing of long fibers by a reactive acrylic liquid resin system, such as ELIUM® resin systems from Arkema.
Claims7
An interlayer polymer composition for welding a thermoplastic composite structure (1) to a thermoplastic or thermoset structure, or a metal part (2) comprising a thermoplastic polymer having a Tg of less than 120° C., wherein said interlayer polymer composition is compatible with said structures (1) and (2), wherein the interlayer polymer composition has a Tg at least 10° C. less than a Tg of a matrix polymer of the thermoplastic composite structure (1), and wherein said interlayer polymer composition further comprises impact modifiers present at 1 to 60 weight percent, based on the total interlayer polymer composition.
Dependencies are inferred from the claim text.