Motor Assembly for Electric Vehicles 

For electric drives, performance, weight and space savings are key. Adhesives are the perfect assembly solution as they can optimize light weight housing and magnet bonding, and also protect and insulate coil windings. 

For these applications, low viscosity adhesives with high adhesion to metals are needed. As metals are not permeable for UV light, Panacol provides dual curing adhesives. These adhesives cure primarily by UV light, with a secondary anaerobic or moisture cure mechanism for shadowed areas. For ferrite bonding or screw and thread locking applications these adhesives are the ideal solution.

Specially formulated adhesives are available for filament winding applications or wrapping components such as hybrid rotor shafts for electric motors and high-voltage surge arresters. These adhesives are designed for materials such as CFRP (carbon fibre reinforced polymer) or GFRP (glass fibre reinforced polymer). 

Panacol offers a variety of fast curing adhesive technologies that possess unique characteristics to better meet the challenges of electric motor and drive train assembly.  Adhesive properties include a wide selection of elongation values, high Tgs for less movement, and improved resiliency to meet the operating requirements of stator, rotor, and magnets through elevated temperatures, shock, and vibration.

The Panacol adhesive portfolio is broad, and includes 1- and 2-component epoxy adhesives as well as UV light and dual-curing adhesives. They are ideally suited for the various assembly and coating applications associated with electric engine assembly.

The adhesive marked in light blue shows exemplary magnet bonding in an electric motor.

In the following table you will find a selection of adhesives suitable for the assembly of electric motors. More products and customer-specific solutions are available on request. 

Technical data sheets can be downloaded by clicking on the adhesive name.

Adhesive Viscosity [mPas] Base Curing* Properties
Vitralit® 4282 mod2 500-600 acrylate UV
secondary anaerobic
UV curing thread locking
fast anaerobic post-curing
light green color
Vitralit® UD 1405 250-450 epoxy UV
Ideal for fiber-reinforced windings for electrical
composite components
Very good wetting properties
Resistant to temperature
Electrically insulating
Transparent, one-component
Vitralit® UC 1406 250-450 epoxy UV
Very good wetting properties
Electrically insulating
High glass transition temperature
Ideal for filament winding
Vitralit® UC 1407 1,500-2,000 (Rheometer, 25°C) epoxy UV
Impact resistant
Good chemical resistance
Ideal for filament winding processes
Vitralit® UD 4292 F 40-70 (LVT 25°C, Sp. 2/30 rpm) acrylate UV
secondary anaerobic
capillary flowing,
bluish fluorescent,
high Tg, secondary anaerobic curing
Structalit® 5858 82,000-100,000 epoxy thermal Opaque, white color,
adheres well to metal,
impact resistant,
good elongation at break
Structalit® 8801 30,000-45,000 (LVT, 25°C, Sp. 4/6 rpm) epoxy thermal Resistant to oils, grease and fuels
excellent flow properties
beige color
certified to ISO 10993-5 standards
Structalit® 8838 6,500-7,500 (Rheometer, 25°C, 20s^-1) epoxy thermal Black color
flexible potting compound
excellent flow properties

*UV = 320 - 390 nm          VIS = 405 nm