Polyurethane composite resin cures faster

Henkel has developed a polyurethane-based composite matrix resin that cures faster than epoxy resins during injection. It hopes the development will allow more automation of the resin transfer moulding (RTM) manufacturing process.

The Loctite MAX2 has low viscosity, which enables more efficient impregnation without stressing the fibre. The composite properties of Loctite MAX2 were specially developed to provide more flexibility and much higher impact resistance than traditional epoxy resins. Henkel says it is confident that this new generation of polyurethane matrix resins deliver significant benefits for fast and efficient manufacturing.

Composites based on carbon fibre or glass fibres are gaining momentum in various application areas due to the opportunity for enormous weight savings over traditional part construction, with no loss in mechanical performance.

Starting in aerospace where pre-impregnated fibres (prepregs) are manually laid up and then baked into composites, many different applications are now penetrating into the automotive industry. New methods of manufacture like resin transfer moulding enable economic processes that are suited for high volume automotive production.

Justin Cunningham

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