New adhesive debonding in magnetic fields

New adhesive debonding in magnetic fields

Adhesive debonding in electromagnetic fields may boost recyclability of materials

University of Sussex claims they have developed an adhesive which debonds in magnetic field. According to the research team the adhesive debonding may allow for better recyclability of materials that are traditionally difficult to disassemble and consequently end up filling landfills.

Adhesives are used in many applications such as vehicle assembly and consumer electronics. Disassembling and recycling these products is often challenging due to the strong adhesive bonds. However, the new adhesive debonding when subject to magnetic field may well be the solution to this issue.

Metal particles are the key to adhesive bond release

Published in the European Polymer Journal, the research findings imply that the adhesive releases its bonds when it becomes subject to alternating electromagnetic field. The adhesive reportedly adheres well to the most common materials including glass, plastic, metal and wood.

The debonding process is based on the heat of the magnetic field melting metal particles included in the adhesive formula. As the metal particles melt, the adhesive bonds are released in a matter of seconds, 30 seconds to be more precise, leaving very little residue. This allows for disassembling a wide variety of products and so increases the recyclability of the materials. Additionally, electromagnetic debonding is safe and does not involve solvents or other chemicals traditionally used for debonding adhesives.