A fast curing metal adhesive for elevated temperatures

The DELO-ML DB154 adhesive is suitable for bonding tasks in electric motors, including bonding of buried magnets, rotor packages, and shafts to hubs. 

During the development of this product, DELO attached great importance to its high temperature stability and heat resistance. DELO-ML DB154 is suitable for use at temperatures up to +180°C, and achieves more than twice the shear strength values of other methacrylates at these temperatures. In addition, the new adhesive retains its strength even when subject to frequent contact with gear oil, motor oil and petroleum.

The product cures by exposure to UV or visible light. Initial strength of the fillet is achieved within six seconds to fix the components, allowing prompt transfer to downstream production processes. The dual-curing adhesive achieves full strength when oxygen is excluded.

Unlike one- or two-component epoxy resins, light-curing methacrylates are fast curing, enabling faster production processes. In addition, one process step can be omitted as mechanical fixing of the components prior to heat curing is not necessary. They also leave a smaller CO2 footprint in production as heat curing would consume more energy.

The medium-viscous adhesive adheres to steel and aluminium, as well as to magnets made of rare earths such as iron-neodymium components. If an activator is used, metals can also be joined to plastics.

DELO also offers an epoxy-based product for even higher temperature applications up to +220°C, but it does take a little longer to cure.