Researchers at Nanyang Technological University NTU (Singapore) have developed an adhesive that sets when exposed to a magnetic field.
The curing of the components of epoxy adhesives usually occurs when exposed to heat, light or moisture. In the case of a new adhesive, a special “magnetic treatment” is required for curing.
It contains epoxy resin with the addition of pre-prepared nanoparticles of manganese, zinc and iron. Under the influence of a magnetic field, they heat up, rigidly fixing the materials. This adhesive is easier to apply, adheres faster, and requires less energy and space to apply compared to other varieties.
For example, bicycle frames and carbon fiber helmets require large ovens to work for several hours to bond, while a small electromagnetic device is sufficient to cure nanoglue.
It takes a 2, 000-watt oven that runs for an hour to fix a gram of regular epoxy glue, the researchers said. A 200-watt electromagnetic device can handle the same amount of magnetic nanoglue in five minutes, that is, the energy will be needed 120 times less. The effect of the adhesive has already been tested for gluing wood, ceramics and plastics.