Fast curing matrix resin

Henkel’s LOCTITE MAX 2 composite matrix resin for resin transfer moulding (RTM) processes is extremely fast curing, ensuring more economic processes and improved throughput.

LOCTITE MAX 2 is a two-part product that has been specifically developed for RTM with glass or carbon fibres.Because of its low viscosity, the polyurethane matrix resin rapidly fills the mould and impregnates the fibre material, resulting in short injection times.With the curing rate also faster than that of epoxy resins, cycle times are shorter.A post cure can also be performed to ensure a full cure in around one hour at 150°C.

Historically, there have been limitations in the use of lightweight components in relation to cycle times and level of automation.In particular, composite components were rarely used for visible vehicle parts as the requisite post-treatment of the surface for subsequent painting has been too costly and time-consuming.

Developments such as LOCTITE MAX 2 are significant contributors, not just to the quality and performance of the vehicle but its economical production as well. This polyurethane matrix resin has enabled automotive specialist Benteler-SGL, to develop a glass-fibre-reinforced leaf spring with a projected production output of over 100,000 parts per year.

This leaf spring has been adopted by Volvo on the XC90, S90 and V90 models and enables a weight saving of 4.5kg per axle.