Advanced High-Temperature Insulation: PAN-Based Rigid Composite Carbon Felt
1. Why Choose Our PAN-Based Rigid Composite Felt?
Our proprietary composite structure — combining graphitized carbon fiber, PAN, and pitch-based components — provides exceptional performance advantages:
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Extreme Thermal Resistance:
Stable up to ≥ 2200°C, and even ≥ 3200°C under inert gas or vacuum conditions. -
Outstanding Durability:
Excellent resistance to thermal shock, ablation, and chemical corrosion (both acids and alkalis). -
Superior Energy Efficiency:
Ultra-low thermal conductivity (0.25 – 1.50 W/m·K at 1150°C) ensures minimal heat loss and higher system efficiency. -
High Purity:
Carbon content ≥ 98%, with ultra-low ash content (≤ 500 ppm) — ideal for sensitive, contamination-free processes. -
Enhanced Structural Strength:
High flexural strength (1.8 – 3.4 MPa) supports large-scale and complex hot zone designs with long service life.
2. Core Technical Specifications
| Parameter | Unit | Value Range |
|---|---|---|
| Maximum Use Temperature (Inert) | °C | ≥ 1800 – 3200 |
| Carbon Content | % | ≥ 98 |
| Density | g/cm³ | 0.17 – 0.35 |
| Ash Content | ppm | ≤ 500 |
| Flexural Strength | MPa | 1.8 – 3.4 |
| Thermal Conductivity | W/m·K | 0.25 – 1.50 |
3. Proven Industrial Applications
Our rigid composite Carbon Felt is the idealhot zone insulation material for minimizing downtime and maximizing operational output in:
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Vacuum & Sintering Furnaces:
Reliable insulation for high-pressure gas quenching, low-pressure sintering, and continuous vacuum systems. -
Metallurgy & Crystal Growth:
Key insulation component for single and multi-crystalline silicon furnaces, powder metallurgy, and high-temperature melting applications (≥ 2200°C). -
Semiconductor & New Energy:
Used in photovoltaic (solar) and semiconductor hot zone assemblies, ensuring clean, stable, and efficient thermal environments.
Unlike standard Soft Felts, our rigid composite material offersgreater strength, higher stability, and a significantly longer service life — ideal for precision manufacturing and large-format furnace systems.
4. Innovation & Customization
At Hebei Huasheng, we apply advanced pre-carbonization and graphitization processes to improve oxidation resistance and reduce brittleness, ensuring consistent performance under extreme conditions.
We also provide custom design and production services to match specific furnace dimensions —
available in lengths and widths from 1000 mm to 1500 mm, and thickness or height up to 3000 mm.
Contact Us
Discuss your high-temperature insulation requirements with our technical team today.
Hebei Huasheng is committed to delivering reliable, high-performance carbon materials tailored to your industry needs.