Flexible Graphite Sheets
Flexible Graphite Sheets: The Ultimate Thermal Management Solution
Flexible Graphite Sheets are high-performance thermal interface materials widely used in electronics, aerospace, and industrial applications. These sheets offer exceptional thermal conductivity while maintaining flexibility and durability.
Key Features of Flexible Graphite Sheets
- Excellent thermal conductivity (300-1500 W/mK)
- Low thermal resistance for efficient heat dissipation
- Lightweight and flexible for easy installation
- Chemically inert and resistant to most solvents
- Customizable thickness from 0.05mm to 1.0mm
- Operating temperature range from -200°C to 400°C
Technical Specifications
| Parameter | Value |
|---|---|
| Density | 1.0-1.8 g/cm³ |
| Tensile Strength | 3-15 MPa |
| Compressibility | 10-30% |
| Electrical Resistivity | 0.0003-0.001 Ω·cm |
| Thermal Expansion Coefficient | -1.5 to -0.5 ×10⁻⁶/K |
Flexible Graphite Sheets FAQ
Q: What are the primary applications of Flexible Graphite Sheets?
A: Flexible Graphite Sheets are commonly used in electronics cooling (CPU/GPU heat dissipation), battery thermal management systems, LED lighting, power electronics, and aerospace applications where weight reduction and thermal management are critical.
Q: How do Flexible Graphite Sheets compare to traditional thermal pads?
A: Flexible Graphite Sheets offer significantly higher thermal conductivity (5-10 times better than silicone thermal pads), thinner profiles, and better mechanical stability under compression. They also provide more consistent performance across wider temperature ranges.
Product Variants
- Standard Grade: For general industrial applications
- High-Purity Grade: For semiconductor and medical applications
- Adhesive-Backed: For easy mounting without additional adhesives
- Reinforced: With fiberglass or metal foil backing for added strength
Performance Data
| Thickness (mm) | Thermal Conductivity (W/mK) | Dielectric Strength (kV/mm) |
|---|---|---|
| 0.1 | 800 | 2.5 |
| 0.2 | 750 | 2.0 |
| 0.5 | 700 | 1.5 |
Flexible Graphite Sheets FAQ
Q: Can Flexible Graphite Sheets be cut or shaped for custom applications?
A: Yes, Flexible Graphite Sheets can be easily die-cut, laser-cut, or hand-cut to fit specific applications. They maintain their thermal properties when cut and can be formed around complex shapes without cracking, making them ideal for custom thermal solutions.
Installation Guidelines
- Clean the mounting surfaces thoroughly
- Measure and cut the sheet to required dimensions
- Apply gentle pressure for proper surface contact
- For best results, use thermal interface paste in high-power applications
- Secure with appropriate mounting hardware
Industry Certifications
- UL94 V-0 flammability rating
- RoHS and REACH compliant
- NASA-approved for aerospace applications
Flexible Graphite Sheets FAQ
Q: How long do Flexible Graphite Sheets last in typical applications?
A: When properly installed, Flexible Graphite Sheets typically last 5-10 years in normal operating conditions. They don't dry out or degrade like some thermal interface materials, maintaining consistent performance throughout their service life. In extreme environments (high vibration, thermal cycling), inspections should be performed annually.
Comparative Analysis
| Material | Thermal Conductivity | Weight | Flexibility |
|---|---|---|---|
| Flexible Graphite | High | Very Light | Excellent |
| Aluminum | Medium | Heavy | Poor |
| Copper | High | Very Heavy | Moderate |
