Pre-oxidized fiber felt, also known as pre-oxidized PAN
(polyacrylonitrile) fiber felt, is a type of non-woven textile
material made from pre-oxidized PAN fibers. PAN fibers are
high-strength, high-modulus synthetic fibers that are commonly used
in the manufacture of carbon fiber.
To create pre-oxidized fiber felt, the PAN fibers are first
pre-oxidized, which involves heating the fibers in an oxygen-rich
environment to convert them into a heat-stable state. The
pre-oxidized fibers are then carded and needle-punched to create a
non-woven felt fabric.
Pre-oxidized fiber felt has a number of desirable properties,
including high temperature resistance, good thermal stability, and
excellent chemical resistance. It is often used in high-temperature
applications such as insulation in furnaces, boilers, and other
industrial equipment. It can also be used as a filter medium in air
and liquid filtration systems due to its high porosity and
filtration efficiency.
Technical data:
| Property | Unit | Carbon fiber felt | Graphite fiber felt |
| Code Number | -- | PFF-900 | PFF-2000 |
| Working Temperature | ℃ | 900±50 | 2200 |
| Thermal conductivity (350℃) | W/m.k | 0.06~0.09 | 0.08~0.30 |
| Thermal conductivity (1550℃) | W/m.k | 0.22~0.30 | 0.50~0.65 |
| Carbon Content | % | ≥85 | ≥99.85 |
| Ash Content | ppm | ≥3000 | 500~1500 |
| Bulk Density | g/cm3 | 0.10~0.12 | 0.08~0.10 |
| Width | cm | ≤160 | ≤140 |
| Thickness | mm | 3, 5, 8, 10±0.5 | 3, 5, 8, 10±0.5 |
Pre-oxidized fiber felt, also known as carbon fiber felt, has
several advantages:
- High temperature resistance: Pre-oxidized fiber felt can withstand
high temperatures up to 2000°C, which is much higher than most
other materials.
- Excellent thermal insulation: Due to its low thermal conductivity,
pre-oxidized fiber felt is an excellent thermal insulator. It can
be used in high-temperature applications to prevent heat loss.
- Chemical resistance: Pre-oxidized fiber felt is resistant to most
chemicals, including acids, bases, and organic solvents. This makes
it suitable for use in harsh chemical environments.
- Lightweight: Pre-oxidized fiber felt is very lightweight, making it
easy to handle and install. It is also ideal for use in
applications where weight is a critical factor.
- High strength and stiffness: Pre-oxidized fiber felt has high
strength and stiffness, making it suitable for use in structural
applications. It can be used to reinforce composites or as a
standalone material.
- Corrosion resistance: Pre-oxidized fiber felt is highly resistant
to corrosion, making it suitable for use in corrosive environments.
- Electrically conductive: Pre-oxidized fiber felt is electrically
conductive, making it suitable for use in applications where
electrical conductivity is required.
Overall, pre-oxidized fiber felt offers a unique combination of
high-temperature resistance, thermal insulation, chemical
resistance, lightweight, high strength and stiffness, corrosion
resistance, and electrical conductivity, making it a versatile
material for a wide range of applications.
