Against the backdrop of explosive growth in the new energy vehicle industry, hydrophobic gas-phase white carbon black has become a key material for ensuring battery safety and performance. Its application scenarios cover the three core systems of battery packs, motors, and electronic control.


In the field of battery pack sealing, as the thickener of thermal conductive gel, the vapor phase white carbon black can increase the viscosity of silicone oil from 1000mPa · s to 50000mPa · s, while maintaining the thixotropic index>3.5. The Wacker HDK used by CATL ®  The H18 product maintains stable rheological properties in the temperature range of -40 ℃ to 150 ℃, ensuring the sealing of the battery pack under extreme working conditions.


In terms of motor insulation, hydrophobic modified white carbon black can replace traditional mica powder, increasing the volume resistivity of epoxy sealant from 1 × 10 ¹⁴Ω· cm to 1 × 10 ¹⁶Ω· cm. BYD's hexagonal structure modified product has a partial discharge value of<5pC at 10kV voltage, meeting the IEC 60034 standard.


In the heat dissipation of electronic control systems, gas-phase white carbon black serves as a stabilizer for phase change materials, which can reduce the fluctuation range of paraffin melting point from ± 5 ℃ to ± 1 ℃, ensuring that IGBT modules do not experience thermal runaway when operating continuously at 85 ℃. The Huifu HB-620 model used by Huawei Digital Energy maintains 98% of its original performance after 1000 thermal cycles.