Semicorex PAN-based graphite rigid felt is the rigid graphite composite material manufactured from polyacrylonitrile fibers. Featuring excellent thermal insulation performance, PAN-based graphite rigid felt is the optimal solution engineered specially to optimize internal heat distribution and improve heat insulation efficiency for the critical high-temperature field in diverse industrial furnace systems.
Semicorex PAN-based graphite rigid felt is made from a polyacrylonitrile continuous fiber preform processed by weaving and needling, and then this fiber preform is subjected to high-temperature processes like pre-oxidation, carbonization and graphitization, followed by densification molding. After undergoing the above series of processes, PAN-based graphite rigid felt boasts multiple excellent properties. It is extensively used in the high-temperature heat treatment systems, such as crystal growth furnaces, powder metallurgy furnaces, vacuum sintering furnaces, and deposition furnaces.
1. High temperature resistance
2. Low thermal conductivity
3. High mechanical strength
4. Superior chemical corrosion resistance
5. High purity and low ash content
6. Lightweight
|
Properties |
Unit |
Semicorex PAN-Based Graphite Rigid Felt |
|
Thermal Conductivity (1550℃) |
W/m.k |
0.75-0.85 |
|
Carbon Content |
% |
≥99.8 |
|
Ash Content |
ppm |
≤200 |
|
Bulk Density |
g/cm2 |
0.15-0.22 |
|
Working Temperature |
℃ |
≥2200 |
|
Max operating temperature in oxygen-free environments |
℃ |
2000-2400 |
|
Max operating temperature in oxygen environments |
℃ |
280-320 |
PAN-based graphite rigid felt is usually fabricated into some essential components like furnace covers, guide cylinders and thermal insulation cylinders. These components can optimize the thermal field of crystal growth furnaces to ensure stable and uniform heat distribution during operation.
As the high-performance thermal insulation materials, PAN-based graphite rigid felt is used in the monocrystalline silicon, polycrystalline silicon, SiC single crystal furnaces and vacuum sintering furnaces. It can contribute to improving higher efficiency and better yield in semiconductor crystal growth systems.
PAN-based graphite rigid felt is able to provide exceptional thermal insulation and mechanical support for heat treatment equipment like high-temperature sintering furnaces and vacuum high-pressure gas quenching furnaces, facilitating the improvement of powder metallurgy product quality.
PAN-based graphite rigid felt can be used as the ablation-resistant composite material in the rocket engines and spacecraft thermal protection systems to protect them from high-temperature airflow erosion.