Resin Formulators’ Thermal Management Solutions Kit

Thermal management epoxy solutions for electric vehicles help manage heat, protect sensitive electronics, and support reliable performance in demanding EV assemblies. This resource hub introduces the main thermal-management applications we support, including potting and encapsulation materials, sealing approaches, and related application resources.

How the Thermal Management Kit Supports EV Applications

Resin Formulators’ Thermal Management Solutions Kit combines RF 5407 and RF 24 into a two-part epoxy system for encapsulating, potting, and sealing electric vehicle components. RF 5407 is an aluminum oxide-filled liquid epoxy resin designed for strong electrical insulation and high thermal conductivity, while RF 24 supports low shrinkage during cure, thermal stability, conductivity, and durable castings.

Hermetic sealing works alongside thermal management by creating an airtight, gas-tight barrier that helps block moisture and other contaminants. In EV systems, that protection is especially relevant for high-voltage components, sensors, and connectors that must stay reliable under heat, vibration, and environmental exposure.

Frequently Asked Questions About EV Thermal Management Epoxies

How does the RF 5407 / RF 24 system handle heat in EV potting applications?

RF 5407 is an aluminum oxide filled liquid epoxy resin built for high thermal conductivity and excellent electrical insulation in electric vehicle components. Paired with the RF 24 curing agent, it is characterized for high temperature service, with a DMA glass transition onset of 134°C and a tan delta peak of 157°C. If your program needs a measured conductivity value on your own cure schedule, our advanced material lab testing services can run it.

Why choose an epoxy thermal management solution over silicone or polyurethane for EV applications?

Epoxies give you strong adhesion, structural rigidity, low thermal expansion, and solid chemical resistance in high voltage environments. Cured RF 5407 with RF 24 holds 2600 psi aluminum lap shear strength, a dielectric strength above 400 V/mil, and 0.03% moisture uptake after 1000 hours at 85°C and 85% relative humidity. That combination suits contactors, relays, and battery-adjacent assemblies where dimensional stability has to hold for the life of the part.

Is the RF 5407 / RF 24 system tested for flame performance?

Cured RF 5407 with RF 24 is tested to UL 94 test standards, passing the horizontal burn test in Resin Formulators testing. The result is reported for indication rather than certification, so programs that need a listed rating should raise that early with our team.

Use the links above to explore the Thermal Management Solutions Kit for Electric Vehicles, the advantages of hermetic sealing for electric vehicles, and a simple explanation of what hermetic sealing is. If your program needs its own data before you commit to a material, our advanced material lab testing services run mechanical, thermal, and chemical characterization on your samples and cure schedule.

How Resin Formulators’ Conductive Epoxy Adhesive Helped Our Customers

Both projects below used the Thermal Management Solutions Kit for Electric Vehicles, which pairs RF 5407 with the RF 24 curing agent for potting, encapsulating, and sealing high voltage components.

Uses and Applications of Resin Formulations Conductive Epoxy Adhesive in EVs

• DC Contactors and Relays
  
  DC contactors and relays are electrically controlled switches designed to manage high-voltage direct current (DC) circuits. Contactors are typically used for higher current applications, while relays handle lower currents.
  
  Use in EV Applications: In electric vehicles, DC contactors and relays are critical for controlling the flow of electricity between the battery and various systems, such as the motor, charging system, and auxiliary components. They ensure safe operation by enabling or disabling power circuits as needed, and by providing isolation during maintenance or fault conditions.
  
  Resin Formulators' conductive epoxy adhesive can be used to secure and electrically connect components within contactors and relays. Its conductive properties ensure reliable electrical pathways, while its adhesive strength maintains structural integrity under thermal and mechanical stresses common in EV environments.

• Circuits
  
  Electrical circuits in EVs comprise interconnected components that control and distribute electrical power throughout the vehicle.
  
  These circuits manage functions such as propulsion, charging, lighting, and infotainment. They must be designed to handle high voltages and currents, and to withstand the harsh conditions of automotive environments.
  
  Our conductive epoxy adhesive can be employed to bond and electrically connect components within these circuits, offering both mechanical stability and efficient electrical conduction. Its thermal conductivity also aids in dissipating heat generated during operation, enhancing circuit reliability.

• Rapid Charging Systems
  
  Rapid charging systems are high-power charging infrastructures designed to recharge EV batteries quickly, significantly reducing downtime.
  
  These systems deliver large amounts of power to the vehicle's battery in a short time, necessitating components that can handle high currents and voltages safely.
  
  In rapid charging systems, our conductive epoxy adhesive can be used to secure and electrically connect high-power components, ensuring efficient current flow and mechanical stability. Its thermal management properties help dissipate heat generated during fast charging, protecting components from thermal damage.

• Battery Power Management
  
  Battery power management involves monitoring and controlling the charging and discharging processes of the EV's battery to optimize performance and longevity.
  
  Effective power management ensures that the battery operates within safe parameters, balancing cell voltages, and preventing overcharging or deep discharging, which can degrade battery health.
  
  Our adhesive can be used to bond sensors and control units within the battery management system, providing reliable electrical connections and mechanical support. Its thermal conductivity aids in managing the heat generated by electronic components, maintaining system stability.

• Li-ion Battery Cells
  
  Lithium-ion (Li-ion) battery cells are rechargeable batteries commonly used in EVs due to their high energy density and efficiency.
  
  Li-ion cells are the primary energy storage units in EVs, providing the power necessary for propulsion and auxiliary systems. They must be assembled and managed carefully to ensure safety and performance.
  
  During battery assembly, our conductive epoxy adhesive can be used to bond cells together and to connect them electrically. Its viscosity allows precise application without overflow, and its cured hardness contributes to structural rigidity and vibration resistance within the battery pack. These properties ensure strong mechanical bonds and efficient electrical pathways, while also aiding in thermal management by conducting heat away from the cells.

• Encapsulation of Motor Windings
  
  Encapsulation involves covering motor windings with a protective material to shield them from environmental factors and mechanical damage.
  
  In EV motors, encapsulating windings protects against moisture, dust, and vibrations, which can degrade insulation and lead to failures. It also aids in heat dissipation, maintaining motor efficiency.
  
  Our conductive epoxy adhesive can be used as an encapsulant for motor windings, providing electrical insulation, mechanical protection, and thermal conductivity. Its controlled viscosity ensures complete coverage of windings, while its cured hardness offers durable resistance to mechanical stress. This enhances the durability and performance of the motor under the demanding conditions of EV operation.

• High-Voltage Relay Potting
  
  Potting involves filling an electronic assembly with a compound to protect it from environmental exposure and mechanical stress.
  
  High-voltage relays in EVs control the distribution of electrical power and must be protected from contaminants, vibrations, and thermal fluctuations to ensure reliable operation.
  
  Our conductive epoxy adhesive can be used for potting high-voltage relays, offering robust protection against environmental factors and mechanical stress. Its viscosity allows it to flow into complex cavities for thorough coverage, and its high hardness when cured enhances structural integrity and long-term durability. Its thermal conductivity helps manage heat generated during relay operation, while its electrical insulation properties prevent short circuits.
  
  By utilizing Resin Formulators' conductive epoxy adhesive in these applications, manufacturers can enhance the performance, reliability, and safety of electric vehicle components through improved electrical connections, mechanical stability, and thermal management.

FAQs

What is the Resin Formulators Thermal Management Solutions Kit?

In what applications is this kit commonly used?

What is an electrically conductive epoxy?