The graphite felt is normally classified into asphaltic based graphite felt, PAN based graphite felt &rayon-based graphite felt. The mainly application is electric conduction in the photovoltaic industry, as the heat retaining material, thermal insulation material for the smelting furnace and vacuum furnace, and in chemical industry it could be the filtration material.
Heat insulation materials
Electrical elements
Absorptive materials
Reinforcing structure for C/C composite components and other products .
Low ash content / High carbon content / Low gas evolution
Excellent heat insulation / Low thermal conductivity
Long life time / Good anticorrosion / High oxidation resistance
Easy Handling / Good Strength
Normal dimension
Specification | PAN based graphite felt | Rayon-based graphite felt |
Length
|
≤25m | ≤30m |
Width
|
≤1.2m | ≤1.35m |
Thickness | 1-10mm | 4-8 |
Item | PAN based graphite felt | Rayon-based graphite felt |
Bulk density g/cm3 |
0.1-0.15 | 0.05-0.15 |
Carbon content % |
≥99 | ≥99 |
Ash % |
0.05-0.1 | 0.5-0.6 |
Strength N⊥ |
60-70 | 5-10 |
Thermal conductivityW/m.k | 0.06(34.6℃) |
The graphite felt is formed after above 2000℃ high temperature treatment under inert gas or vacuum.