What is the difference between carbon felt and graphite felt?
The carbonization temperature of carbon fiber is around 1000℃, and the carbon content after making carbon fiber felt is around 90%, so the temperature of carbon fiber felt is also around 1000℃.
Graphite fiber is formed when carbon fiber felt is heated to more than 2000 ℃ in an oxygen-free environment. The carbon content of carbon fiber felt can reach more than 99% after being made, and the temperature of graphite felt can reach 2000℃.
Further reactions occur if carbon fiber felt is used at temperatures above 2000 ℃. The ash content and volume density of carbon fiber felt and graphite felt are also different due to different treatment temperature. See the following table for details:
|
Property |
PAN-based Carbon fiber felt |
PAN-based Graphite fiber felt |
| Thermal conductivity, W/m.k | 0.12-0.17 | 0.10-0.15 |
| Carbon content, % | ≥90 | ≥99.00 |
| Ash content, ppm | 1000-2000 | ≤800 |
| Bulk density, g/cm3 | 0.11-0.16 | 0.10-0.15 |
| Width, mm | ≤1200 | ≤1200 |
| Thickness, mm | 10/8/6 | 10/8/6 |
| Produce Temperature,℃ | 1000 | 2000 |
Post time: Dec-26-2020
