Preox Fiber - Oxidized PAN Staple Fiber - LOI more than 40% - high temperature resistance

FLame retardant check:    

Process of oxidized pan staple fiber:

What is oxidized pan staple fiber and its usage.

Our pre-oxidized yarn is oxidized from carbon fiber precursor polyacrylonitrile (PAN), pre-oxidized yarn is a heat-stable polyacrylonitrile (PAN) oxidized fiber that will not burn, melt, soften or drip melt, very suitable for yarn Processing of threads, fabrics, nonwovens and felts. The LOI (Limiting Oxygen Index) of the preoxidized fiber we supply exceeds 40%, which is far superior to other organic fibers in this respect, and the flame retardant grade is S-a

Crimped PAN staple fibers are made from continuous fiber tow. They are supplied with a special sizing that improves cohesion. Together with a carefully optimized crimp level, this ensures that carding processes run continually and reliably, with good productivity. Crimped staple fibers are available in a range of lengths to suit different non-woven or spun yarn processes and equipment, .

Due to its good thermal stability and chemical resistance, it has very good electrical insulating properties. It can be used in various fire source and heat protection applications, such as heat protective clothing, spark protection welding blanket, bellows compensator, carbon fiber reinforced carbon clutch and gearbox fabric, aircraft seat fireproof fiber, flame retardant mattress, automobile pan Fabrics for brake and clutch discs, industrial seals and packings. It is even used as a precursor in the manufacture of carbon/carbon aircraft brake pads and automotive refractory felts.

Pre-oxidized fiber is a black fiber with a partially cyclized structure formed by air oxidation of polyacrylonitrile fiber at a certain temperature, and is an intermediate product of carbon fiber. The density is about 1.39g/cm3. Strength 2.1cN/dtex. Elongation 20%. Modulus 5GPa. The limiting oxygen index is 40-60. Decomposition temperature ≥ 640°C. Moisture regain 9%. The preparation method is to pre-oxidize polyacrylonitrile filaments in air at 200-300°C.

The Property of Staple oxidized pan fiber

1.  Pre-oxidized yarn can be blended with para-aramid fiber to form yarn, which is non-flammable, has no droplet, no heat shrinkage, no thermal cracking, and the heat-resistant and flame-retardant effect is better than that of pure para-aramid yarn. The fabric made of yarn blended with para-aramid has excellent performance in antistatic, flame retardant, wear-resistant, acid and alkali resistance, and corrosion resistance.

2. Excellent high temperature resistance, it can be used for a long time at 350 degrees Celsius, it is difficult to burn under an open flame, and it will spontaneously ignite without extension of the flame.

3. Good chemical resistance, resistant to various acid and alkali solvents, and can be used in harsh corrosive media.

4. Excellent thermal insulation performance, small thermal conductivity

5. Excellent thermal stability, no softening, shrinkage and no droplet in high temperature environment.

Factory capacity：

Production lines：    2

Capacity：                3000 tons/year

PAN oxidization product line

Warehouse