High Temperature Pitch Based Carbonization Furnace - China Suppliers & Factory for Carbon Fiber Production
Main Functions
Removal of Non-Carbon Elements
High-temperature pyrolysis removes elements such as O, H, and N from pre-oxidized fibers (residual rate <1%), increasing the carbon content to 92%-99%.
Formation of Graphite Structure
High temperatures promote rearrangement of fiber molecular chains, forming a turbostratic graphite structure, which imparts high modulus and high strength to the carbon fibers.
Key Performance Relationships
Process control in the carbonization furnace directly affects the tensile modulus (150-900 GPa) and strength (1-7 GPa) of the carbon fibers. It is a crucial element in the development of high-modulus pitch-based carbon fibers (such as M60J grade for aerospace applications).
Frequently Asked Questions
What is the role of high-temperature pyrolysis in carbon fiber production?
High-temperature pyrolysis removes non-carbon elements like oxygen (O), hydrogen (H), and nitrogen (N) from pre-oxidized fibers, reducing their residual rate to less than 1% and raising the carbon content to 92%-99%.
How do high temperatures affect the structure of carbon fibers?
High temperatures stimulate the rearrangement of fiber molecular chains, leading to the formation of a turbostratic graphite structure which gives the fibers their characteristic high strength and high modulus.
What properties does the turbostratic graphite structure provide?
The turbostratic graphite structure is essential for imparting high modulus and high strength properties to the finished carbon fibers.
How does the carbonization furnace process control affect fiber performance?
Process control within the carbonization furnace directly determines the fiber's final mechanical properties, specifically influencing its tensile modulus (150-900 GPa) and tensile strength (1-7 GPa).
Which grade of carbon fiber is critical for aerospace applications?
High-modulus pitch-based carbon fibers, such as the M60J grade, are critical for aerospace applications, and their development depends heavily on precise carbonization furnace process control.