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Thermal silicone grease is a high-performance, thermally conductive material typically made from silicone oil mixed with thermal fillers (such as aluminum oxide, boron nitride, etc.). It has excellent thermal conductivity, insulation, and high-temperature resistance, and is commonly used to fill gaps between electronic components and heat sinks to improve heat conduction efficiency.
Typical Products:
|
Products |
Appearance |
Viscosity mPa.s |
Specific Gravity |
BLT μm |
Thermal Conductivity W/(m-K) |
Thermal Resistance K/W |
Features |
|
N-Sil 8608 |
White |
200 |
2.2 |
2 |
0.8 |
0.20 |
High reliability Low BLT |
|
N-Sil 8620 |
Grey |
120 |
3.3 |
14 |
2.0 |
0.09 |
High reliability Low thermal resistance |
|
N-Sil 8630 |
Grey |
200 |
3.0 |
35 |
3.0 |
0.18 |
Best stencil printing performance |
|
N-Sil 8626LS |
Blue |
200 |
3.1 |
7 |
2.6 |
0.05 |
Ultra low thermal resistance |
|
N-Sil 8628LS |
Blue |
120 |
3.5 |
14 |
2.8 |
0.07 |
Low thermal resistance Best comprehensive performance |
|
N-Sil 8636 |
White |
80 |
3.3 |
37 |
3.6 |
0.15 |
Low viscosity High thermal conductivity |
|
N-Sil 8640E |
Grey |
200 |
2.8 |
21 |
4.3 |
0.04 |
Tim1 Ultra low thermal resistance High thermal conductivity |
|
N-Sil 8650-2 |
Grey |
195 |
3.6 |
70 |
5.5 |
0.17 |
Printable High Thermal Conductivity |
Thermal Heat Sink Paste
Superior Product Features of Thermal Silicone Grease:
- Low Thermal Resistance
- High Temperature Conductivity Range: Performs effectively from -50°C to 200°C.
- Excellent Chemical Stability: Compatible with heat sinks and chips without causing corrosion.
- Sealing Properties: Good sealing performance, able to fill tiny gaps and uneven surfaces.
- Temperature Stability: For N-Sil 8630, after 1008 hours at 150°C, thermal resistance changes by only about 5%, with a weight loss of just 0.41%. For N-Sil 8650-2, weight loss is only 0.3% after 1008 hours at 150°C.
- Low Migration and Diffusion: After high-temperature storage at 150°C, damp heat aging at 85°C / RH85%, and thermal cycling from -40°C to 150°C, there is no significant change in diffusion area, with only minor porosity.
- Excellent Anti-Drying Capability: Even after storage at 150°C, the paste remains in a wet clay-like state without dripping or drying out.
Thermal Silicone Grease
Easy dispensing：
- Ease of Application and Removal: Easy to apply or clean off, compatible with screen printing for precise application.
Safety and Sustainability: Prioritizes both safety and environmental responsibility.
- Electronics Cooling: In devices such as computer CPUs, GPUs, and LED lighting, thermal grease is used to fill tiny gaps between electronic components and heat sinks. This improves heat dissipation efficiency and keeps components at a safe operating temperature.
- Power Electronics Modules: For high-power electronic devices like motor controllers, thermal grease enhances the performance of the cooling system, ensuring stable and reliable operation.
- Automotive Industry: Components like motors, electronic controls, and battery packs in vehicles generate significant heat during operation. Thermal grease plays a critical role in the cooling systems of these components, helping to boost overall performance and extend part lifespan.
- Other Industrial Applications: In power and control systems used across various industrial sectors, efficient heat dissipation is essential, and thermal grease is instrumental in enhancing these systems' cooling effectiveness.
As an expert in heat conduction and advanced thermal management material, thermal silicone grease may seem inconspicuous, yet it plays a critical role in essential cooling tasks. Its presence makes our tech-driven lives more comfortable, safe, and efficient. Advanced communication technologies, motor controls, drives, and power converters are delivering more functionality in smaller form factors, thereby increasing power density and heat generation. With expectations for sustained high-reliability performance, effective thermal management is essential. Thermal grease is closely connected to this process, optimizing thermal management systems and helping modern tech devices maintain optimal operating conditions.
Q: How to Apply Thermal Grease?
A: Applying thermal grease properly is crucial for effective heat dissipation. Here's a step-by-step guide:
1.Surface Treatment
- The substrate surfaces should be free of dust, oil, fat or any other dirt in order to get the optimum thermal conductivity
- For slightly contaminated surfaces it is sufficient to wipe with isopropanol or ethanol.
2.Press or Screen Printing
- Option 1: Direct Pressure (recommended for most users): Carefully place the heat sink directly on top and press gently. The pressure will spread the grease evenly without trapping air bubbles.
- Option 2: Screen Printing: Use screen to thinly and evenly spread the grease across the surface.
Proper application of thermal grease ensures the better possible thermal conductivity and helps maintain optimal performance and temperature control for your device.
Q: Is the higher the thermal conductivity of thermal grease, the better?
A: No, the higher the thermal conductivity, the better the application requirements of other product performances must be met to ensure that there will be no other problems in the long-term application process, such as uneven scraping, particles, drying, etc.
Q: Some users asked whether the thermal grease solidified and dried?
A: Thermal grease will not solidify, but inferior grease may dry out. Thermal grease will not undergo chemical reactions during its application, and will not be structured, that is, it will not solidify. Drying out is due to excessive oil separation, which causes the grease to become thick and dry.
Q: The higher the viscosity of thermal grease, the better the thermal conductivity?
A: Not necessarily. The thermal conductivity of thermal grease is determined by the thermal conductivity of the raw materials in the formula.
Q: Does thermal grease have adhesion?
A: Thermal grease has a certain viscosity, but it does not achieve the effect of adhesion. The viscosity is to better adhere to the heat dissipation components to prevent displacement.
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