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- Carbon Felt / Graphite Felt
Thermal Insulation Graphite Barrel
BZNCarbon manufactures precision-engineered graphite insulation barrels using rigid graphite felt, either PAN-based or Rayon-based, for extreme-temperature thermal protection applications. These barrels are processed at 2200°C or 2600°C and tailored to meet diverse industrial furnace and insulation needs.
Description
Graphite insulation barrels are cylindrical insulation structures made from rigid graphite felt. These parts are engineered to provide exceptional thermal stability, low thermal conductivity, and dimensional consistency in ultra-high-temperature environments. They are widely used as insulation walls in vacuum and inert gas furnaces.
Available in PAN or Rayon-based options, barrels can be customized in height, thickness, and internal diameter. Both offer excellent carbon purity and low ash content, with Rayon-based barrels providing slightly lower thermal conductivity for improved energy efficiency.
Application Areas
Thermal insulation for crystal growth furnaces
Semiconductor and photovoltaic manufacturing equipment
Vacuum and high-temperature processing furnaces
Aerospace and nuclear shielding applications
Custom reactor linings and chamber enclosures
Technical Specifications – BZN-3 (Rayon Based Graphite Felt, 2200°C)
| Property | Value |
|---|---|
| Carbon Content | 99.5 – 99.9% |
| Ash Content | 0.1 – 0.5% |
| Bulk Density | 0.08 – 0.12 g/cm³ |
| Fiber Diameter | 15.5 μm |
| Thermal Conductivity | 0.026 W/m·K |
| Specific Resistance | 0.12 – 0.16 Ω·cm |
| Tensile Strength | 0.10 – 0.12 MPa |
| Processing Temperature | ≥2200°C |
| Application Temperature | ≥2200°C (Vacuum), ≥2800°C (Inert Gas) |
Available Dimensions – Graphite Barrels
| Parameter | Range |
|---|---|
| Thickness | 10 – 100 mm |
| Width | 10 – 1500 mm |
| Height | up to 3000 mm (3 meters) |
| Material | PAN-based or Rayon-based rigid felt |
Custom barrel designs can be manufactured based on specific drawings.
Packaging and Storage
Packed in protective plastic film and cartons
Store in dry, ventilated areas; avoid humidity
Shipped as non-hazardous goods
