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Expanded Graphite Sheets High-Thermal Conductivity & Lightweight Solutions
- Introduction to Expanded Graphite Materials
- Technical Superiority & Performance Data
- Manufacturer Comparison: Key Parameters
- Customizable Solutions for Industrial Needs
- Real-World Application Scenarios
- Environmental Compliance & Safety
- Future Innovations in Graphite Technology
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Understanding the Versatility of Expanded Graphite Sheet Solutions
Expanded graphite materials have revolutionized thermal management across industries, with expanded graphite sheet
s demonstrating 40% higher thermal conductivity than traditional aluminum alloys. Derived from natural graphite through acid intercalation and high-temperature expansion, these sheets maintain structural integrity at temperatures up to 450°C in inert atmospheres.
Technical Advantages Validated by Data
Third-party testing confirms critical performance metrics:
- Thermal conductivity: 150-400 W/m·K (axial direction)
- Compressive strength: 5-20 MPa (adjustable via density)
- Density range: 0.7-1.5 g/cm³
- Electrical resistivity: 5-15 μΩ·m
Manufacturer Performance Comparison
| Vendor | Thermal Conductivity (W/m·K) | Max Temp (°C) | Density (g/cm³) |
|---|---|---|---|
| GrafTech | 390 | 500 | 1.1 |
| SGL Carbon | 370 | 480 | 1.3 |
| Tokai Carbon | 410 | 520 | 0.9 |
Customization Capabilities
Advanced manufacturers now offer:
- Thickness variations: 0.1mm to 3mm (±0.02mm tolerance)
- Hybrid composites with PTFE or silicone
- Pre-cut shapes with ±0.1mm dimensional accuracy
Industrial Implementation Cases
Aerospace applications have seen 18% weight reduction in thermal systems through optimized expanded graphite powder integration. Automotive battery modules using custom graphite sheets report 22°C average temperature decrease during fast-charging cycles.
Regulatory Compliance Metrics
All premium-grade expanded graphite products meet:
- RoHS 2.0 (EU 2015/863)
- REACH SVHC compliance
- UL 94 V-0 flammability rating
Expanded Graphite Sheet Technology Leading Industry Evolution
Recent advancements in compression molding techniques have enabled 15% improvement in z-axis conductivity for multi-layer expanded graphite configurations. Market projections indicate 7.8% CAGR growth through 2030, driven by renewable energy and EV adoption.
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FAQS on expanded graphite sheet
Q: What is an expanded graphite sheet?
A: An expanded graphite sheet is a flexible, thermally conductive material made by compressing expanded graphite flakes. It is widely used in thermal management and gasket applications due to its high heat resistance and electrical insulation properties.
Q: How does expanded graphite powder differ from expanded graphite sheets?
A: Expanded graphite powder consists of loose, exfoliated graphite particles, while sheets are compressed layers of these particles. The powder is often used as a raw material for sheets or in lubricants, whereas sheets are applied in sealing and thermal interfaces.
Q: What are the key advantages of expanded graphite?
A: Expanded graphite offers excellent thermal conductivity, chemical resistance, and flexibility. It is lightweight, non-toxic, and performs reliably in extreme temperatures, making it ideal for industrial and electronic applications.
Q: Why choose expanded graphite sheets for thermal management?
A: Expanded graphite sheets provide uniform heat distribution and high thermal conductivity while remaining lightweight. They outperform many metals and polymers in scenarios requiring flexibility and corrosion resistance.
Q: Can expanded graphite sheets be used in fire-resistant applications?
A: Yes, expanded graphite sheets are inherently fire-resistant and self-extinguishing. They withstand temperatures up to 3,000°C and are commonly used in fire seals and high-temperature insulation systems.
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