Carbon Felt Insulation
High-purity graphite rigid felt for extreme temperature environments.
Low thermal conductivity, reducing energy loss in high-heat applications.
Customizable shapes: boards, cylinders, and 3D forms for complex designs.
Superior durability: resistant to thermal shock and erosion.
Optional surface treatments for enhanced protection and performance.
Description
Carbon Felt Insulation: High-Performance Thermal Management Solutions
Carbon felt insulation is a versatile, high-performance material designed to provide reliable thermal management in extreme temperature environments. Made from high-purity carbon fibers, it offers superior heat resistance and durability, making it ideal for applications in industries like electronics manufacturing, semiconductors, and solar photovoltaics. With its ability to withstand temperatures up to 3000°C, carbon felt insulation helps optimize energy efficiency, reduce heat loss, and ensure consistent temperature control in high-stakes processes such as vacuum furnaces and heat treatment systems.
What Is Carbon Felt Insulation?
Carbon felt insulation is a non-woven material made by compressing high-purity carbon fibers into a felt-like structure. The fibers used in carbon felt are typically derived from PAN (polyacrylonitrile) or Rayon, both of which undergo high-temperature processing to form a stable, rigid structure. The resulting material is known for its exceptional thermal conductivity resistance, low density, and chemical inertness, making it perfect for use in harsh thermal environments.
Unlike traditional insulation materials, carbon felt insulation has isotropic properties, meaning its physical performance remains consistent in all directions, ensuring reliable insulation across complex geometries. This makes it a preferred choice in high-precision industries like electronics and semiconductor manufacturing.
Key Features & Benefits
- High Purity Carbon Content – Carbon felt is created using high-quality carbon fibers, offering high purity for superior thermal performance and chemical stability.
- Low Thermal Conductivity – Efficient heat retention and insulation, reducing energy consumption in high-temperature applications.
- Thermal Shock Resistance – Withstands rapid temperature changes without cracking or deforming, ensuring long-lasting reliability.
- Superior Durability – Resistant to wear and tear, making it ideal for continuous use in challenging environments.
- Customizable Shapes and Sizes – Available in standard sheets, cylinders, and custom 3D forms, tailored to fit specific furnace designs or insulation needs.
- Corrosion Protection Options – Surface treatments like laminated graphite foil enhance protection against harsh chemicals and gases.
TAICHIRON@ Series Carbon Felt insulation
Graphite-Based Rigid Felts
| Grade | Type | Bulk Density (g/cm³) |
Compressive strength (MPa) |
Flexural strength (MPa) |
Vacuum Thermal conductivity 1200℃ (W/m.k) |
Available sizes |
Available Designs |
| TCR-L14 | Rayon Base Long Fiber |
0.14 | 1.00 | 0.80 | 0.39 | 1000x1500mm Thickness Designed to customer request |
Board/Cylinder |
| TCR-S18 | Rayon Base Short Fiber |
0.18 | 1.10 | 1.03 | 0.32 | 1500x1500x250mm | Board/Cylinder/Disk/ Components |
Graphite-Based Soft Felts
| Grade | Type | Bulk Density(g/cm³) | Vacuum Thermal conductivity 1000℃ (W/m.k) |
Ash Content (ppm) | Thickness | Application | |
| TCS-20 | Rayon Base Long Fiber |
0.095±10% | 0.13 | ≤100 | 10mm±10% | Thermal Field for Fiber Optics and Quartz Industries |
|
| TCS-21 | 0.095±10% | 0.13 | ≤20 | 10mm±10% | Semiconductor Crystal Growth Furnace Insulation Spare Parts |
||
| TCS-22 | 0.095±10% | 0.13 | ≤5 | 10mm±10% | Insulation for Finished Semiconductor Crystal Growth Furnaces |
||
| TCS-23 | 0.1±10% | 0.15 | ≤100 | 10mm±10% | General-purpose thermal field material | ||
| TCS-24 | 0.1±10% | 0.15 | ≤20 | 10mm±10% | Insulated Soft Felt for Powder Handling in the Semiconductor Industry |
||
Applications for Carbon Felt Insulation
in High-Temperature Industries
Carbon felt insulation is essential for applications where reliable, high-temperature insulation is a must. In electronics manufacturing, it provides precise thermal management for circuit board production and component sintering. The semiconductor industry depends on carbon felt insulation for crystal growth systems, wafer processing, and vacuum chamber insulation. In solar photovoltaic applications, it acts as a reliable lining for both polycrystalline casting furnaces and single-crystal growth systems.
in Thermal Management
Carbon felt insulation is highly reliable in vacuum and inert gas furnaces, providing structural integrity and consistent thermal performance during ultra-high-temperature sintering and brazing processes. It also plays a key role in heat-treatment and induction furnaces, where it helps maintain stable and uniform temperatures. Additionally, carbon felt insulation is used in welding and soldering operations as backing strips, heat shields, and work surfaces to protect against high heat exposure. In the automotive industry, it is an essential material for high-temperature exhaust linings and other thermal management components, where long-lasting durability and heat resistance are crucial.
Why Choose SHJ CARBON
Technology First
We offer a variety of transmission components
25+ Years of Industry Experience
Proven expertise in carbon and graphite insulation for high-tech manufacturing.
Trusted by Top Manufacturers
Long-term supplier to leading electronics, semiconductor, and solar PV companies.
Custom Engineering Support
Tailored designs in boards, cylinders, and complex 3D shapes to match exact specifications.
Advanced Production & Purification
Secondary high-temperature treatment up to 2800 °C for exceptional purity.
Surface Treatment & Customization Options
SHJ CARBON offers a range of surface treatments and customization options to meet your specific operational requirements:
- Edge Sealing – Prevents particle shedding and improves material integrity.
- Corrosion Protection – Specialized coatings that enhance the material's resistance to chemical damage in harsh environments.
- Laminated Graphite Foil Layers – Adds extra strength and heat resistance, perfect for more demanding applications.
- 3D Shaped Processing – Custom-made to fit complex furnace geometries or specialized heat shield designs.
- Custom Finishes for Different Applications – Tailored surface treatments to enhance durability, energy efficiency, and performance.
|
Surface Treatment Type |
Protection Against Dust |
Airtightness |
Surface Protection |
Shock Resistance |
Key Advantages |
|
No Surface Treatment |
– |
– |
– |
– |
– |
|
Graphite Paper Lamination |
○ |
○ |
○ |
○ |
Good air permeability and low cost |
|
Carbon Cloth Lamination |
○ |
○ |
○ |
○ |
Anti-dust penetration and heat loss |
|
Special Coatings |
◎ |
◎ |
◎ |
◎ |
High protection strength, long service life |
|
Special Coatings (Enhanced) |
◎ |
◎ |
◎ |
◎ |
Anti-dust penetration, high protection performance, high purity |
FAQs for Graphite Rigid Felt
Graphite rigid felt manufacturing varies by region. Japan predominantly uses pitch-based materials, Europe and the U.S. favor rayon-based, and China relies on PAN-based products. PAN-based felts are known for their high strength and oxidation resistance, making them ideal for high-temperature applications. Rayon-based felts are more flexible but have lower strength. In single-crystal silicon furnaces, PAN-based felts are often combined with graphite composites for improved erosion resistance and heat stability.
PAN-based felts offer higher mechanical strength, making them ideal for structural stability. Rayon-based felts are better for ultra-high temperatures and provide superior thermal insulation, making them suited for clean environments like crystal growth furnaces.
Graphite rigid felt can last for thousands of cycles in a controlled environment, with factors like temperature and handling influencing its longevity. Proper surface treatments can further extend its service life.
Yes, we offer tailored solutions, including custom shapes (boards, cylinders, and 3D forms) and additional surface treatments such as lamination and corrosion protection to suit your specific needs.
Our MOQ varies based on size and customization. We offer flexible options for both small and large orders, including prototypes and bulk supply agreements.
Get in Touch – Request a Quote
Ready to enhance your thermal management systems with high-performance carbon felt insulation? Reach out today for expert advice, customized solutions, and fast delivery.
Contact Us Now or Request a Quote.
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