Healable thermoset resin achieves ultra-fast composites repair

CompPair Technologies (Renens, Switzerland) highlights its HealTech solutions, which feature an embedded healing functionality for ultra-fast repairs, preserving economic value and extending the lifespan of composite structures. The company specializes in providing tailored repair solutions for several composite applications across various industries.

HealTech is a thermoset-based resin system that gives fiber-reinforced polymers (FRPs) the ability to heal cracks and delaminations in 1 minute by locally heating the part from 100°C-150°C. HealTech is suitable for autoclave, out-of-autoclave (OOA) and press curing, as well as for a range of composite processes, such as infusion; currently, CompPair’s portfolio includes prepreg and liquid composite molding (LCM) lines, all of which have customizable fiber options.

CompPair provides pre-impregnated textiles with various reinforcement types and resin systems adapted to autoclave, OOA and press processing. On top of its two current resin systems (CS01 and CS02), the team can support the implementation of bio-based systems, RTM, fire resistant and slitted tape systems.

HealTech, designed to provide benefits under static and fatigue damage use cases, while keeping competitive mechanical performances, achieves:

• +30% crack resistance: CompPair’s composite solution chemistry brings increased toughness to reinforce a composite product’s strength
• 100% damage regeneration: HealTech enables repair in the matrix, including delamination, microcracks and scratches
• +80% damping: Enhanced damping allows better and constant performance throughout the composite part’s lifetime 
• 60+ healing cycles: HealTech composites can repair damage in the matrix more than 60 times, while maintaining initial technical properties
• 400 times faster repair times: This drastic reduction enables users to reduce maintenance costs and downtime.

All of CompPair’s semi-products can be transformed into semi-finished parts, including tubes, thermoformable sheets, sandwich panels and monolithic carbon and glass fiber plates.