31st July 2010

Adhering magnets in your application



 A common question amongst users of magnets is how to stick them to the great many surfaces that our magnets come into contact with. In most cases, the application will dictate what adhesive you use, however the wrong choice of adhesive will often result in the magnet becoming detached from its operating surface. This is especially true of Neodymium, given their high strength. Using adhesives that dry without some form of flexibility, such as in the case of super glue, could cause this problem.

Generally speaking, one of the three adhesives below are used when it comes to ensuring that magnets stay fastened to its operating surface. At the end of the day, nothing beats performing your own trial to ascertain what works best.

1.) Silicone: When using larger magnets, Silicone is a relatively easy, cost effective and efficient option. Unlike epoxy's etc, there is no need to mix 2 parts.

2.) Epoxy resin: Epoxy is a common choice when choosing an adhesive. By far its biggest advantage is its abiltiy to dry with some flexibility and relatively quick curing time.

3.) Cyanoacrylate (CA): This stuff sticks like the proverbial! Like epoxy's, CA requires an initiator to activate and has application on metal, plastics & glass. We have tested Bondmasters F246/Initator 5 CA and can report that this adhesive has excellent performance with superior shear strength, resistance to peel, fatigue and best of all impact.

    

                                                    

 

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