Hunan MTR Co., Ltd.
Hunan MTR Co., Ltd.
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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℃.
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.