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Does Super Glue Affect Magnets?

Super Glue (such as cyanoacrylate adhesive) is a common and powerful adhesive that is widely used in household and industrial applications. Due to its fast curing and strong bonding power, super glue is often used to bond a wide range of materials, including magnets, so will this super glue affect the performance of magnets?


The magnetic properties of magnets originate from their internal material structure, especially the arrangement of their magnetic domains. Common magnet materials include neodymium-iron-boron, samarium-cobalt, and ferrite. The magnetism of these magnets is formed by the arrangement of their magnetic moments at the atomic level, and this arrangement is not directly affected by super glue during the bonding process.


In other words, super glue does not change the magnet's magnetic properties. Therefore, when attaching magnets to other materials, the performance of the magnets is not diminished by the use of glue.


The ferrite pot magnet in the picture is a magnetic component composed of a ferrite ring magnet and adhesive fixed on a steel shell.

ferrite ring magnet and adhesive fixed on a steel shell


One thing to keep in mind is that when using super glue to bond magnets, if there is too much glue buildup, it may create a physical barrier between the magnets, which will reduce the attraction between the magnets to some extent. To avoid this, minimize the amount of glue used and make sure it is evenly distributed.


You might also wonder if the heat generated by the curing of the glue could affect the magnet?

Superglue may generate a small amount of heat during the curing process, but this heat is usually not enough to affect magnet performance.


Overall, super glue will not have a direct effect on the magnet's magnetic properties. However, it is important to pay attention to the amount of glue used and the operating environment to ensure that the magnets are bonded and perform well in the long term.


For magnets that need to be used in extreme conditions, a more durable adhesive such as a two-part epoxy is recommended.


Related Magnets and Glue Articles;

How to glue neodymium magnets to plastic

Role of the motor rotor paste magnet steel brush glue

What kind of glue is better for motor magnets?

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