Shin-Etsu Silicone Launches High-Performance Grease KS-64, Enhancing Insulation and Heat Dissipation Reliability for Pow

Shin-Etsu Chemical Co., Ltd. has recently introduced its high-performance silicone grease, KS-64. This silicone oil compound, specifically designed for electrical and electronic equipment, integrates excellent electrical insulation, superior chemical inertness, low volatility, and reliable temperature resistance, offering a professional-grade solution for demanding insulation, sealing, and interface thermal management applications.

• Excellent Electrical Properties: It boasts a high volume resistivity of 620 TΩ·m, a dielectric breakdown strength of 4.0 kV (for a 0.1mm gap), a permittivity of 2.80 (60Hz), and a low dissipation factor of 2.3x10^-4 (60Hz). These parameters collectively form its excellent electrical insulation foundation, effectively preventing leakage current, short circuits, and arcing, ensuring the safe operation of equipment in high-voltage or high-humidity environments.
• Chemical Inertness and Water Repellency: The product is chemically stable, not prone to react with common materials, and offers good water repellency. This helps protect sensitive electronic components from corrosion and extends equipment service life.
• Broad Temperature Range and Low Volatility: KS-64 operates reliably across a wide temperature range from -50°C to +200°C, meeting application needs from low temperatures to sustained high temperatures. Its volatile content after 24 hours at 200°C is as low as 0.1%, and its low-molecular-weight siloxane (D3-D10) content is ≤ 100ppm. This ensures mass stability under long-term high-temperature conditions, preventing contamination of surrounding optical or precision components or degradation of its own performance due to outgassing.
• Good Workability and Compatibility: With a worked consistency of 246 at 25°C, the grease has a medium paste consistency, making it easy to apply and fill. Although slight oil separation (5.8% @ 200°Cx24h) may occur after prolonged storage, thorough stirring can restore homogeneity without affecting performance. Flexible packaging from 100g tubes to 20kg pails caters to different needs from R&D to mass production.

• Power Electronics and New Energy Vehicles: Suitable for insulation and interface thermal filler in power modules (e.g., IGBT, SiC/GaN modules), thermal conduction and insulation for Battery Management Systems (BMS), and insulation protection for components inside On-Board Chargers (OBC) and DC-DC converters, enhancing long-term reliability of systems with high power density.
• Industrial Drives and Automation: Used for insulation and thermal conduction between power devices and heat sinks inside variable frequency drives (VFDs) and servo drives, ensuring stable operation in harsh industrial environments.
• Consumer Electronics and LED Lighting: Can serve as a thermal conductive and insulating medium for high-power LED chips and drivers, or for heat management in consumer electronics requiring electrical isolation.
• Traditional Electrical Equipment: Can play an important role in insulating and sealing high-voltage connectors, sensors, and transformer terminals, as well as protecting electrical contacts requiring moisture and corrosion resistance.

• Shin-Etsu provides detailed safety handling instructions in the TDS, including storage in a cool, dark place, stirring before use, avoiding mixing with other oils/greases, wearing protective gear during operation, and ensuring adequate ventilation.
• The company emphasizes that users must conduct their own suitability tests before use and read the product's Safety Data Sheet (SDS).
• The KS-64 product is designed for general industrial use only and is strictly prohibited for implantation into the human body or for medical purposes.

As electrical and electronic equipment evolve towards higher voltage, higher frequency, and higher power density, the requirements for interface materials regarding electrical insulation, thermal management, and long-term stability are becoming increasingly stringent. With its balanced and excellent overall performance, Shin-Etsu's KS-64 silicone grease provides engineers with a reliable material choice to address these challenges. It contributes to improving the energy efficiency, power density, and long-term service reliability of end products, serving as a key foundational material driving technological advancement in related industries.