Toughened Thermoplastic Adhesive Targets Damage Tolerance in Epoxy-Based Composites
CAMX 2026: L&L Products is introducing Toughened T-Link, a fully amorphous technology designed to increase ductility, interlaminar toughness and compression-after-impact performance in carbon fiber/epoxy.
Toughened T-Link film. Source | L&L Products
L&L Products (Romeo, Mich., U.S.) is announcing the release of Toughened T-Link, an advanced engineered thermoplastic adhesive developed to improve the performance of layered carbon fiber/epoxy composites. Designed for composite applications that demand high ductility, flexural strength and impact performance, Toughened T-Link enhances the proven T-Link platform while maintaining the processing advantages of a thermoplastic adhesive.
Toughened T-Link combines optimal adhesion, dry-to-the-touch handling, room temperature storage and fast consolidation into composite structures while enhancing impact resistant resistance. The material is engineered to conform to deep-drawn and irregularly shaped parts. It is available for purchase or sampling in pellet, micropellet and film formats, with converted yarn and filament formats under development.
“Toughened T-Link also creates opportunities to use thinner films and monofilaments, helping manufacturers place adhesive only where it’s needed to reduce unnecessary weight and material,” notes Don Paquet, senior scientist, L&L Products.
In internal testing, composite panels made with Toughened T-Link film and epoxy prepreg layers demonstrated a considerable increase in short beam shear performance under ASTM D2344 and a 66% increase in compressive strength after impact under ASTM D7137 compared with panels made with epoxy prepreg layers only.
The material is targeted for composite applications involving high flexural loads, including potential aerospace and sporting goods. As a thermoplastic material, it may also support repairability, debonding via heat, reprocessing and recycling opportunities where applicable services and processes are available.
L&L Products is also highlighting its Continuous Composites Systems (CCS) and InsituCore foaming core technology.
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