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E-Mobility

WACKER silicones are the ideal materials for use in extreme conditions, such as those found in automotive applications, especially e-mobility. Whether in electric motors, power electronics, displays, cables and plugs, fuel cells, batteries or sensors: our high-performance silicones have exceptional properties that enable our customers to secure pole position in their particular market.

Our silicones protect sensitive electronics and support thermal management. This enables the key topics – electrification, connectivity and autonomous driving – to be implemented reliably and economically. Silicones from WACKER guarantee high reliability and a long service life. In addition, flame-retardant silicone coatings make it possible to use lightweight laminates to separate individual compartments in the car, e.g. to separate the battery from the passenger compartment.

Silicones: The Right Choice for Batteries

Silicones such as elastomers and resins (SILRES®, SEMICOSIL®, ELASTOSIL®) are the products of choice where high temperature resistance and permanent flexibility are top priorities.

General Benefits

  • Extend lifetime and performance of batteries
  • Keep operating temperatures within an optimum range, connect elements to active cooling systems
  • Increase battery safety / thermal event isolation: silicones slow the spread of thermal events
  • Protect electronic components against moisture, oxidation, chemicals and vibration
  • Reliability of silicones (resistance to thermal shock, oxidation, moisture and chemicals)
  • Electrical insulation

Silicone use-cases in batteries

Thermal management

  • Thermally conductive gap filler or adhesives to couple cells to modules and/ or active cooling systems
  • Thermally conductive potting compounds for fixing and coupling cells or for potting electronics in battery management systems (BMS)

Battery gaskets

  • Dispensable silicone lid sealing, CIPG
  • Flame-retardant solid silicone rubber

Cell module protection:
Thermally and electrically insulating coating or sheet

Battery safety/ prevention of thermal runaway

  • Cover protection sheet based on solid silicone rubber
  • Fiber composite based on silicone resin as matrix system

Module assembly

  • (Thermally conductive) adhesive
  • Insulation sheet, potting or foam

Sealing

  • Sealing of modules (CIPG – cured in place gasket)
  • Sealing of battery lids with ceramifying sealants or coatings
  • Sealing of plugs / connectors

Potting/ encapsulation

  • Couple cells for vibration control
  • Potting of electronics, e.g., in battery management system (BMS)
  • Potting of busbars

Product Recommendations

Table is scrollable
Products
Technical data
Product properties
外观 Shore density A Breaking strength Elongation at break Tear strength Compression Set Penetration 断裂伸长率 Hardness Shore 00 Product Rheology Specific Features Crosslinking Property Vulcanizate
ELASTOSIL® LR 3003/40 A/B transparent transparent 40[1] 40[1] 10.0 N/mm²[2] 10.0 N/mm²[2] - - 30 N/mm[5] 30 N/mm[5] 11 %[6] 11 %[6] - - 610 %[3] 610 %[3] - - - Food-contact, General purpose, Reduced volatile content - -
ELASTOSIL® LR 3003/50 A/B transparent transparent 50[1] 50[1] 10.3 N/mm²[2] 10.3 N/mm²[2] - - 26 N/mm[5] 26 N/mm[5] 13 %[6] 13 %[6] - - 490 %[3] 490 %[3] - - - Food-contact, General purpose, Reduced volatile content - -
ELASTOSIL® LR 3011/50 FR A/B dark-gray / black dark-gray / black 50[1] 50[1] 10.0 N/mm²[2] 10.0 N/mm²[2] - - 28 N/mm[5] 28 N/mm[5] 13 %[6] 13 %[6] - - 510 %[3] 510 %[3] - - - Flame retardant, Reduced volatile content - -
ELASTOSIL® LR 3072/30 A/B opaque opaque 30[1] 30[1] 7.4 N/mm²[2] 7.4 N/mm²[2] 710 %[4] 710 %[4] 17 N/mm[5] 17 N/mm[5] 27 %[7] 27 %[7] - - - - - - - Self-adhesive, Oil bleeding - -
ELASTOSIL® LR 3170/40 A/B dark-gray / black dark-gray / black 45[1] 45[1] 9.2 N/mm²[2] 9.2 N/mm²[2] 590 %[4] 590 %[4] 23 N/mm[5] 23 N/mm[5] 34 %[7] 34 %[7] - - - - - - - Flame retardant, Self-adhesive, Reduced volatile content - -
ELASTOSIL® R 531/60 /E/2003 orange orange 61[1] 61[1] 6.5 N/mm²[2] 6.5 N/mm²[2] 400 %[4] 400 %[4] 17 N/mm[5] 17 N/mm[5] - - - - - - - - - Flame retardant, Heat resistant, Ceramifying - -
ELASTOSIL® R 772/60 C6/9005 black black 60[1] 60[1] 9.0 N/mm²[2] 9.0 N/mm²[2] 400 %[4] 400 %[4] 20 N/mm[5] 20 N/mm[5] 10 %[8] 10 %[8] - - - - - - - Flame retardant, Ultra-low compression set, Heat resistant, One-component - -
ELASTOSIL® RT 675 A/B - - 80[1] 80[1] 2 N/mm²[2] 2 N/mm²[2] 20 %[4] 20 %[4] - - - - - - - - - - Flowable - Two-component, Addition Curing Thermally conductive
ELASTOSIL® RT 751 A/B - - - - - - - - - - - - - - - - - - - - - -
SEMICOSIL® 961 TC A/B - - - - - - - - - - - - - - - - 55[9] 55[9] - - - -
SEMICOSIL® 962 TC A/B - - - - - - - - - - - - - - - - 50[9] 50[9] - - - -
SEMICOSIL® 9671 TC2 A/B - - - - - - - - - - - - - - - - - - - - - -
SEMICOSIL® 9672 TC - - - - - - - - - - - - - - - - 60 - 70[9] 60 - 70[9] - - - -
SILRES® REN 168 - - - - - - - - - - - - - - - - - - - - - -
SILRES® MK FLAKES - - - - - - - - - - - - - - - - - - - Solvent-free, Heat resistant, Condensation-curing, Hydrophobic, UV & weathering-resistant, Electrically insulating - -
SILRES® MK POWDER - - - - - - - - - - - - - - - - - - - Heat resistant, Condensation-curing, Hydrophobic, UV & weathering-resistant, Electrically insulating, Solvent-free - -
WACKER SilGel® 613 - - - - - - - - - - - - 70 1/10mm[10] 70 1/10mm[10] - - - - - - - -
Legend
[1] Shore density A | DIN ISO 48-4,  [2] Breaking strength | ISO 37 type 1,  [3] 断裂伸长率 | ISO 37 type 1,  [4] Elongation at break | ISO 37 type 1,  [5] Tear strength | ASTM D 624 B,  [6] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A | post-cured 6 h / 200 °C,  [7] Compression Set | 22 h | 125 °C | DIN ISO 815-1 type B method A,  [8] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A,  [9] Hardness Shore 00 | ASTM D 2240,  [10] Penetration (hollow cone, 9.38 g) | DIN ISO 2137,  [] Suited,  [] Well suited,  [] Ideally suited 

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 (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 in Gearbox Mounted Hybrid Modules:

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

Applications in Direct Drives:

  • Active cooling
  • Coil impregnation
  • Potting of coil connector rings/junction boxes

产品推荐

表格可上下滚动
个产品
技术数据
Product properties
Shore density A Breaking strength Tensile strength Elongation at break Tear strength 耐久性 流变性 具体特征 交联性能 硫化胶
ELASTOSIL® RT 705 42[1] 42[1] 3.0 N/mm²[2] 3.0 N/mm²[2] - - 180 %[4] 180 %[4] 4.6 N/mm[5] 4.6 N/mm[5] 耐蒸汽性, 耐热性 触变 - 单组分 自粘性
ELASTOSIL® RT 705 F 35[1] 35[1] - - 2.9 N/mm²[3] 2.9 N/mm²[3] 250 %[4] 250 %[4] 5.1[5] 5.1[5] 耐热性 触变 - 单组分 自粘性
ELASTOSIL® RT 772 32[1] 32[1] - - 2.0 N/mm²[3] 2.0 N/mm²[3] 130 %[4] 130 %[4] 3.8 N/mm[5] 3.8 N/mm[5] 耐热性, 耐蒸汽性 - - 缩合固化, 双组分 自粘性, 电绝缘性
SILRES® H60 A/B - - - - - - - - - - - - 不含溶剂, 低粘度, 耐热性, 憎水性, 液体, 耐紫外线性和耐候性, 电绝缘性 - -
SILRES® H62 C - - - - - - - - - - - - 不含溶剂, 低粘度, 单组分, 耐热性, 憎水性, 液体, 耐紫外线性和耐候性, 电绝缘性 - -
说明
[1] Shore density A | DIN ISO 48-4,  [2] Breaking strength | ISO 37 type 1,  [3] Tensile strength | ISO 37 type 1,  [4] Elongation at break | ISO 37 type 1,  [5] Tear strength | ASTM D 624 B,  [] 适合,  [] 非常适合,  [] 极其适合 

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Benefits of 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 housing and auxiliary units
  • Potting and bonding of sensor applications
  • Potting of control electronics

Processing:

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

产品推荐

表格可上下滚动
个产品
技术数据
Product properties
外观 Shore density A Tear-growth resistance 具体特征 硫化胶
ELASTOSIL® Film 624 - - 27[1] 27[1] - - - 精确
ELASTOSIL® LR 3025/40 A/B transparent transparent 40[1] 40[1] 31 N/mm[2] 31 N/mm[2] 快速固化, 免二段硫化的低压缩形变 -
ELASTOSIL® RT 624 "4S" A/B VS - - - - - - - -
说明
[1] Shore density A | DIN ISO 48-4,  [2] Tear-growth resistance | ASTM D 624 B,  [] 适合,  [] 非常适合,  [] 极其适合 

Advantages:

  • Resistance to temperatures up to 180 °C, long-term durability
  • Very good dielectric strength and insulation properties
  • Outstanding mechanical strength
  • Excellent chemical resistance
  • Low bending radii
  • Insulate the flow of high currents from the body of the car and the environment under thermally challenging conditions

Applications

  • HCR for extrusion of high-voltage cables (peroxide / addition-cure)
  • Ensuring a reliable power supply in the vehicle (connection between inverters and electric motor)
  • High-voltage battery cell connection (Internal wiring of high-voltage components)

Advantages:

  • Very reliable performance of connector seals (low compression set, water and dust-proof)
  • Outstanding mechanical strength
  • High-voltage electrical insulation
  • Unique resistance to temperatures of 175 °C

Applications

  • HCR and LSR for molding cable connectors
  • Molded silicone connectors ensure tight, flexible, robust links between cables and power sources

Advantages:

  • High media resistance
  • Reliable sealing
  • Low compression set in contact with coolants (glycol and water)
  • Design flexibility
  • 2K solutions

Applications:

HCR and LSR for battery coolant connectors

Additional Information