Our system has noticed that you are based in United States, but that the current country setting is Spain. Do you still want to change your country?

Alternative Drives

WACKER silicones are the ideal materials for use in extreme conditions, such as those found in automotive applications, especially e-mobility. By protecting sensitive electronics while assisting with thermal management, our silicones allow for safe and economical implementation of electrification, autonomous driving and connectivity concepts. In addition, our silicones ensure the reliable operation of inductive charging and the heat / climate system (e.g. PTC or sheath heaters). Flame-retardant silicone coatings makes it possible to use lightweight laminates to separate individual compartments in the car, e.g. the battery from the passenger compartment.

Hybrid & Electric Drive

Silicones from our ELASTOSIL^®, SEMICOSIL^®, SILRES^® and WACKER SilGel^® product series are used in hybrid and alternative drives to provide efficient thermal management and functional safety, optimum processing and production, as well as reliable protection of sensitive electronics.

General Benefits

Protection of engine components against moisture, environmental impacts, chemicals,coolants and fluids
Vibration damping (from -45 °C up to >180 °C)
Heat resistance (from 180 °C up to 230 °C continuous load) and active cooling support
Longer life and performance of electric insulation over a broad temperature and frequency range

Applications in Electric Motors:

Impregnation of electrical coils (rotor/stator) with silicone resins
Coil potting with silicone elastomers
Active cooling with silicone fluid
Protection of electrical connections by potting junction boxes and connector rings with silicone elastomers
Permanent magnet bonding with high tear-strength silicone adhesives

Applications for Gear Box Mounted Hybrid Module:

Active cooling
Permanent magnet bonding
Coil impregnation
Potting of coil connector rings/connection boxes

Applications for Direct Drive:

Active cooling
Coil impregnation
Potting of coil connector ring/connection box

Batteries

Silicones are perfect for thermal management. Used as gap fillers, gels, adhesives and pastes they can efficiently dissipate heat – even from complicated shapes and they maintain their properties for a long period of time over a broad range of temperatures (-50 °C to +180 °C, special grades up to +230 °C). They can also withstand mechanical stress, vibrations and temperature fluctuations.

General Benefits

Keep operating temperatures within an optimum range, connect elements to active cooling systems
Protect against moisture, oxidation, chemicals and vibration
Extend life and performance

Benefits for Battery Modules:

Dissipate heat (thermal management)
Couple cells with heat-sink elements (bonding)
Couple cells for vibration control (bonding)
Seal modules (CIPG – cured-in-place-gasket)

Benefits for Battery Pack Systems:

Dissipate heat (thermal management)/couple modules to active cooling
Seal modules (CIPG – cured-in-place-gasket)
Insulate high-voltage cables and seal connectors
Silicones for battery management systems
Protect electronic components (encapsulation)

Benefits for Battery Management Systems

Protect electronic components (encapsulation)

Applications:

Sealing of battery module and battery housing
Bonding couple cells for vibration control
Thermal management coupling of cells / modules for active cooling
High-voltage cables and connectors
Potting of electronics in battery management system

Fuel Cells

The silicones can be used to seal fuel-cell components (bipolar plates or MEA / membrane electrode assemblies), either as part of the fuel cell or as prefabricated gaskets inserted during stacking. Our silicones make fuel-cell power units reliable and extend their life and performance.

Benefits Silicone Gaskets:

Chemically inert, i.e. their properties remain stable in a fuel-cell set-up and during operation, and do not negatively affect the fuel-cell performance
Excellent compression set, ensuring gas and coolant tightness and securing the fuel cell against leakage over its full lifetime
Excellent thermal and degradation resistance

Applications:

Sealing bipolar plates (BPP)/membrane electrode assembly (MEA): dispensing/screen printing/injection molding
Sealing of housings
Potting of control electronics

Processing:

Injection molding
Low-pressure injection molding
Screen printing
Dispensing
Potting
Sealing

Winding Impregnation

WACKER has developed the high-performance silicone resin SILRES^® H62 C especially for impregnating the windings of electric motors. SILRES^® H62 C is applied by dipping.

Benefits:

Optimized heat dissipation and electrical insulation
Not modified with organic components
Very low volatility (suitable for vacuum pressure impregnation)
Is cured by heat through catalyzed addition cross-linking without the formation of byproducts
Remarkably insensitive during curing to the influence of various kinds of insulating materials
Can be processed at temperatures up to a maximum of 80°C to reduce viscosity
Contains no decomposable or physiologically problematic components
The vulcanizate conforms to the fire safety requirements defined in UL 94 V0

Applications:

VPI (Vacuum Pressure Impregnation) of traction motors and of windings in electrical equipment with H- and C-class insulation
Protection of windings
Elimination of voids