How Momentive Silicone Elastomers Empower Electric Vehicles

The electric vehicle market has seen tremendous growth due to changes in consumer trends and new innovative technology fabricating longer-range and better-performing vehicles. Momentive performance silicone elastomers are poised to assist this rapidly growing market. In the next couple of years, automotive OEMs are sprinting to deliver their variant of electric vehicles that can outperform the existing benchmark and focus on building the future of renewable energy infrastructures for these vehicles. 
 

Current combustion engine vehicles contain highly advanced electrical and electronic parts that now perform essential performance functions. However, the electronic sensors on these traditional vehicles are crucial in maintaining a solid foundation. Momentive silicone solutions have provided combustion vehicles with outstanding chemical, heat, and weather resistance for new-age electronic sensors, cables, and traditional fluoroelastomer engine seals. With the shift in focus towards electrification and technological advancements, Momentive performance silicone elastomers can continue to produce exceptional performance properties for new electric cars. Silicone elastomers support many e-mobility components while providing high-performance benefits such as longevity, reliability, and durability. Momentive silicone materials assist electric vehicle components by providing thermal management, sealing, and bonding capabilities, and protecting sensitive assembly technology that makes e-mobility vehicles.  

 

WHY MOMENTIVE FOR EV?

Momentive silicone elastomers offer unique ready-to-use capabilities for demanding performance requirements in the EV market, such as their liquid silicone rubber (LSR) and high-consistency rubber (HCR) grades. Silicone elastomer additives solve complex e-mobility manufacturing challenges from temperature requirements to governmental regulatory standards. Automotive applications such as electrical connectors will face increasing scrutiny and expectations for long-lasting reliability, durability, and service life. By enhancing thermal management, battery solutions, cables, connector materials, sensor coatings, and adhesives, Momentive's performance silicone elastomers will help drive electric vehicles into the future.

SILOPREN™ LSR SERIES 

The Silopren™ LSR series is a versatile portfolio of two-component liquid silicone rubber typically recommended for injection molding processes. Liquid silicone rubber (LSR) is curable, pumpable, and thermally resistant to extreme temperatures. With fast mold cycles and the ability to be molded and cured to exact dimensions, this silicone technology offers outstanding performance for e-mobility automotive manufacturers.
 

SELF-LUBRICATING & SELF-BONDING TECHNOLOGY

Momentive's LSR portfolio of self-lubricating grades enables various electrical connector applications within the electric vehicle. Silopren™ LSR materials encompass low molecular weight, low compression set, and thermal resistance for demanding automotive environments. 
 

Silopren™ LSR portfolio also exhibits self-bonding technologies, allowing electric vehicle design engineers to leverage the two-component and hard-soft design systems. This self-bonding capability provides seamlessly integrates between engineering thermoplastic design while ensuring vital seal placement and performance. Silopren LSR™ 2740 grade is an ideal two-component, self-lubricating silicone rubber for electric vehicle connectors and sealing components. 

Momentive Solutions for E-Mobility

Grade	Appearance	Density (g/cm3)	Durometer (Shore A)	Tensile Strength (MPa)	Elongation (%)	Tear Strength	Compression Set
Silopren™ LSR 2030	Translucent	1.11	31	8	800	18	15*
Silopren™ LSR 2040	Translucent	1.12	40	9	750	25	25*
High Productivity LSRs
Silopren™ LSR 2630	Translucent	1.10	32	8	700	35	15
Silopren™ LSR 2640	Translucent	1.12	42	8	600	40	25
Silopren™ LSR 2650	Translucent	1.12	52	10	550	50	25
Silopren™ LSR 2660	Translucent	1.13	62	9	400	45	20
Self-Bonding/Two-Component & Self-Lubricating/Self-Bonding
Silopren™ LSR 2740	Translucent	1.11	38	9.3	700	20	25
LIM™ 6010	Translucent	-	10	2.76	510	32	-
LIM™ 6030	Translucent	-	30	8.3	750	28.1	50
LIM™ 6040	Translucent	-	40	8.3	650	40.4	40
LIM™ 6045	Translucent	-	42	8.3	650	40.4	25
LIM™ 6050	Translucent	-	50	8.6	575	43.9	35
LIM™ 6061	Translucent	-	60	9.4	470	40.3	27
LIM™ 8040	Translucent	1.08	43	5.2	385	37.8	27*

GENERAL-PURPOSE TECHNOLOGY

Silopren™ LSR can reduce vulcanization temperature while keeping an equivalent crosslinking. With a vast portfolio of LSR grades, Momentive performance materials include the following benefits:

• High thermal and dielectric stability
• Outstanding aging resistance
• Easy to pigment
• Self-bonding and rapid cure rate
• Dielectric insulating properties
• Increase crack resistance and weatherability
• Low compression set without post-cure
• Lightweight allowing for EV-mileage performance benefit

MOMENTIVE SILICONE SOLUTIONS FOR EV

Momentive performance materials are the preeminent silicone elastomers for EV manufacturers and automotive OEMs. Their portfolio of liquid silicone rubber (LSR) and heat-cured rubber (HCR) encompass unique proficiencies that equip electric vehicles with safety and reliability. Momentive's technology bolsters an array of EV solutions below: 
 

• High-Voltage Battery Systems
• ​Electrified Powertrain Components
• Electric Vehicle Fuel Cell Seals
• EV Insulations and Connectors
• Two-Component Systems
• EV Charging Cables and Wires

SUMMARY

The automotive future is here, and OEMs are racing to electrify their fleets. EVs are the future of automotive technology, and manufacturers need reliable, safe, and long-lasting materials to keep pace with the race toward electrification. ChemPoint has a technical specialist to discuss how Momentive performance materials can support your EV application and formulation today.