Adhesives get a grip on magnets
A
Bondmaster product story
Edited by the Engineeringtalk editorial team
Mar 8, 2002
Bondmaster 581 is a noncorrosive, rapid room temperature curing structural adhesive for bonding permanent magnets in brush-type DC electric motors.
Bondmaster 581 is a noncorrosive, rapid room temperature curing structural adhesive for bonding permanent magnets in brush-type DC electric motors.
Specially formulated to be noncorrosive to copper or other electrically conductive surfaces, Bondmaster 581 will not outgas acidic vapors during cure.
Bondmaster 581 allows for totally enclosed nonventilated assemblies.
No post oven cure, or 24 hour aeration is necessary as is required with other acrylic adhesives.
Bondmaster 581 cures in 15 to 30s at room temperature allowing for increased assembly rates.
With Bondmaster 581 two-part acrylic adhesive, manufacturers benefit from high-performance adhesion and ease of use in magnet-bonding applications.
It is the only 1:1 mixable acrylic adhesive that allows the user to dispense the product through either a static mixer or the external mix process.
Bondmaster's external mix technology provides higher performance and reliability than conventional bead-on-bead systems.
It also makes high-speed production even more efficient since it uses no static mixers, which need to be changed frequently.
Bondmaster 675 adhesive offers: excellent gap-filling ability and durability; high shear, peel and impact strength.
In addition, it requires minimal surface preparation and no use of an activator.
Bondmaster 675 cures rapidly at room temperature, fixturing parts in 10 to 13min and achieving full strength in 3h.
Bondmaster 675 is environmentally friendly, 100% solids, nonflammable and has less of an odour than other acrylic adhesives.
Bondmaster 675 adhesive is specially designed to bond ferrite, alnico and rare earth magnets in electric motors, but it also can be used on magnets in many assembly applications.
It adheres magnets to glass and most metal surfaces in appliances, furniture, automotive and construction applications; to frames in permanent magnet brush-type DC motors; and to pole pieces and baskets in speaker assemblies.
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