Graphite Hard Felt Features:
High rigidity /high strength
Excellent ablation resistance
No short fiber drop
Low thermal conductivity
Thermal shock resistance
Airflow erosion resistance
Thermal insulation performance
Graphite Hard Felt Sheet is mainly used in vacuum and various metallurgical industrial furnaces (single crystal growth furnace, polycrystalline casting furnace, polycrystalline reduction furnace, polycrystalline ingot furnace, high-pressure gas quenching furnace, hot isostatic pressing furnace, thermal balance furnace, low-pressure sinter Furnace, pressure vacuum sintering furnace, etc.
| Material: | Polyacrylonitrile |
| Product Type: | Thermal insulation sheet |
| Thermal conductivity: | 0.15-0.25 |
| Refractory temperature: | above 2000 ℃ |
| Material thickness: | 5-300mm |
| CUSTOM Size | Plate length: 10--3000mm Plate width: 10-2000mm Plate thickness: 5-300mm |
| Form: | Microporous |
| temperature | Operating temperature in air: < 350 ℃ Working temperature in vacuum: < 2200 ℃ Operating temperature in atmosphere: < 3000 ℃ |
| Carbon content: | above 98% |
| Density: | 0.20-0.30g.cm3 |
| Core material: | polyacrylonitrile |
| Grade: | A customized processing |
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.
Graphite Hard Felt Sheet is also widely used in defense, metallurgy, chemical industry, and other industries.
Especially with the rapid development of polycrystalline silicon and monocrystalline silicon industries,
as an ideal material for thermal insulation of high-temperature furnaces, the demand for high-quality hard carbon fiber felt has reached an unprecedented height.
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 the environment | air(℃) | ≦350 |
| ash content(ppm) | ≦200 | vacuum(℃) | ≦2200 |
| Processing temperature | First ≧1800 Second≧2200 | Inert atmosphere(℃) | ≦3000 |
Product Tags:
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