Thermal conductive silicone oil and damping silicone oil: functional oriented structural design
Comparison of performance indicators:


Thermal conductive silicone oil: Based on silicone oil, adding thermal conductive fillers such as alumina (particle size 1-10 μ m) and boron nitride, the thermal conductivity can reach 3.0W/(m · K), and the viscosity (25 ℃) is 500-5000cP.
Damping silicone oil: By regulating the flexibility of molecular chains, the compression rate can reach 40% -60%, the loss factor tan δ>0.3, and the viscosity range is 1000-100000cP.
Application scenario differentiation:
Thermal conductive silicone oil: accounts for 70% of the thermal management of new energy vehicle batteries, which can control the temperature difference of the battery pack within ± 2 ℃; In the heat dissipation of 5G base stations, filling the gap between the CPU and the heat sink reduces thermal resistance by 30%.
Damping silicone oil: It plays a dominant role in shock resistance of precision instruments, such as in spacecraft attitude control systems, which can reduce vibration attenuation time by 50%; Improve ride comfort by 20% in automotive suspension systems.
Technical challenge: Thermal conductive silicone oil needs to balance thermal conductivity and fluidity, and settlement is prone to occur when the filler addition exceeds 30%; Damping silicone oil needs to optimize its molecular structure to achieve stable loss factor within the temperature range (-50 ℃ to 150 ℃).