Hunan MTR Co., Ltd.
Hunan MTR Co., Ltd.
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Graphite Hard Felt Sheet Features:
High rigidity /high strength
Excellent ablation resistance
Thermal shock resistance
Airflow erosion resistance
Thermal insulation performance
No short fiber drop
Low thermal conductivity
Self-supporting
| 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 Felt Application:
1. Aerospace industry: hot isostatic pressing furnace, heat treatment, sintering, brazing, hot pressing furnace
2. Semiconductor industry: drawing silicon single crystal furnace, vacuum metallurgy
3. Metal heat treatment: heat treatment furnace, sintering furnace, brazing furnace
4. Carbon fiber production: induction heating or resistance heating carbonization furnace, graphitization furnace
5. The production of composite materials: pyrolytic carbon and pyrolytic graphite, chemical vapor deposition, or other composite materials
6. Energy materials: vanadium or other redox battery materials
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.
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 the environment |
air(℃) | ≦350 |
| ash content(ppm) | ≦200 | vacuum(℃) | ≦2200 | |
| Processing temperature |
First ≧1800 Second≧2200 |
Inert atmosphere(℃) | ≦3000 |
Temperature resistance: 1800 ℃ in a vacuum, 2850 ℃ in inert gas
Hunan MTR New Material Technology Co., Ltd. has perfect production technology and equipment, we can customize products of various sizes and shapes to meet your needs for various vacuum and high-temperature furnace insulation materials. Sincerely welcome your inquiries.