Potting Compounds for Automotive Applications
High-performance encapsulation resins for reliable automotive electronics protection
Our Solution:
We ensure the long-term reliability of electronic assemblies with customized encapsulation resins based on polyurethane (RAKU® PUR), epoxy (RAKU® POX), and silicone (RAKU® SIL). Engineered with over 40 years of application expertise, these materials protect sensitive electronics against chemicals, aggressive media, vibration, and environmental influences while improving thermal management. High thermal conductivity, excellent thermal cycling resistance, low water absorption, a low dielectric constant, strong electrical insulation, and UL 94 V-0 flame retardancy deliver dependable performance and protection, also in the most demanding automotive environments.
Your Key Benefits
Technology & Specifications
Materials
- RAKU® PUR: Polyurethane-based potting compounds featuring high thermal conductivity, excellent resistance to thermal cycling for sensitive components, and outstanding crack resistance in flexible formulations.
- RAKU® POX: Epoxy-based potting compounds with high thermal conductivity, a low coefficient of thermal expansion, good dielectric strength, and excellent resistance to fuels and other media.
- RAKU® SIL: Silicone-based potting compounds offering excellent thermal cycling resistance, high crack resistance, and outstanding chemical resistance for demanding environments.
Technical Highlights
- Reactivity tailored to specific processing requirements
- Broad material portfolio ranging from soft and elastic to highly rigid formulations (Shore 00 to Shore D)
- Thermal conductivity of up to 4 W/mK
- Reliable performance across temperatures from -70°C to +180°C
- Low Shore hardness potting compounds protect sensitive sensors against moisture, contamination, and mechanical stress
- High operational reliability under changing environmental conditions
- Reliable potting of integrated electronics
- Long-term resistance to weathering and environmental influences
- Reliable operation of electronic access systems
- Protection against water, dust, and temperature fluctuations
- Reliable protection of sensitive electronics against environmental influences
- Long-term functional reliability under demanding operating conditions
In modern door handles, keyless entry systems, and other convenience features, potting compounds ensure reliable operation by protecting sensors, antennas, and electronics from moisture, contaminants, vibration, and mechanical stress.
Encapsulation resins are used in high-voltage components, battery management systems (BMS), charging connectors, and inverters.
Potting compounds protect electronic assemblies from corrosion, shock loads, and temperature fluctuations, contributing to long service life and high operational reliability.
Potting materials protect radar, camera, and other sensor electronics from vibration, thermal stress, and environmental exposure, ensuring reliable performance of advanced driver assistance systems.
Supporting you worldwide & around the clock.
FAQ
Automotive potting systems are polyurethane-, epoxy-, or silicone-based encapsulation resins used to protect electronic components in vehicles from moisture, chemicals, vibration, and temperature fluctuations. At the same time, they improve electrical insulation and support thermal management.
Depending on the application requirements, potting compounds based on polyurethane (RAKU® PUR), epoxy (RAKU® POX), or silicone (RAKU® SIL) are used. These materials differ in terms of thermal conductivity, flexibility, temperature resistance, and chemical resistance, enabling tailored protection and performance for a wide range of automotive electronics applications.
Typical applications for automotive potting systems include sensors, electronic control units (ECUs), advanced driver-assistance systems (ADAS), door and locking systems, battery management systems (BMS), power electronics, converters, and charging connectors for electric vehicles (EVs).
Thermally conductive potting compounds efficiently dissipate heat generated by electronic components, transferring it away from sensitive areas. This helps prevent overheating, maintains stable operating temperatures, and contributes to the reliable, long-term performance of electronic systems.
Yes. Specially formulated potting materials provide excellent resistance to moisture, chemicals, road salt, and other aggressive substances that vehicle components are exposed to during daily operation.
Depending on the product, automotive potting materials comply with industry requirements and standards such as UL 94 V-0 for flame retardancy, Relative Thermal Index (RTI) ratings, and RoHS and REACH compliance. Development and manufacturing are carried out in accordance with recognized quality management standards, including ISO 9001 and IATF 16949.