Graphite Hard Felt Sheet Features:
The main use of Graphite Hard Felt Sheet is as a thermal insulation material for single crystal silicon smelting furnace. In the chemical industry, it can be used as a filter material for high purity corrosive chemical reagents. Under the non-oxidizing atmosphere, the temperature of the graphite felt can reach 2850℃.
- Excellent ablation resistance
- Thermal shock resistance
- Airflow erosion resistance
- Thermal insulation performance
- High rigidity /high strength
- Self-supporting
- No short fiber drop
- Low thermal conductivity
Physical and chemical indicators:
| main material |
PAN-CF / asphalt-CF / viscose-CF |
Sheet specifications |
length(mm) |
10-3000 |
| Bulk density(g/CM3)) |
0.22-0.28 |
width(mm) |
10-2000 |
| Thermal conductivity |
0.15-0.25(25℃)0.40-0.45(1400℃)
|
thickness(mm) |
5-300 |
|
Barrel specifications
|
diameter(Φ) |
Φ100-Φ2500 |
| Carbon content(％) |
≧99 |
Wall thickness(T) |
5-150 |
| bending strength(Gpa) |
1.5-3.2 |
Tube height |
100-3000 |
| Flexural strength(Gpa) |
1.0-2.5 |
Use environment
|
air(℃) |
≦350 |
| ash content(ppm) |
≦200 |
vacuum(℃) |
≦2200 |
| Processing temperature |
First ≧1800
Second≧2200
|
Inert atmosphere(℃) |
≦3000 |
Temperature resistance: 1800 ℃ in vacuum, 2850 ℃ in inert gas
Graphite hard felt (commonly known as carbon fiber composite hard felt, cured felt, carbon fiber-reinforced, etc.) is made by special process that integrates graphite paper, polyacrylonitrile-based carbon felt, and polyacrylonitrile-based carbon cloth into one body, curing After molding, then primary and secondary high-temperature treatment.
Polyacrylonitrile-based graphite felt is stronger and more resistant to oxidation than viscose-based graphite felt, but it has poor flexibility, large bulk density, and good thermal insulation performance. In addition to their high purity, high-temperature resistance, corrosion resistance, and non-melting characteristics, they also have the advantages of elasticity, foldability, tailoring, and sewing with graphite yarn.
Product Tags:
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