Introduction to Carbon Fiber Fabric: The Four Major Manufacturing Processes of Carbon Fiber
Release time:
2024-12-03
Source:
Carbon fiber is a new type of material with a high carbon content and high modulus. Its manufacturing mainly includes four processes: spinning, thermal stabilization
Carbon fiber is a new type of material with a high carbon content and high modulus. The manufacturing process mainly includes four major steps: spinning, stabilization, carbonization, and graphitization. The chemical changes involve dehydrogenation, cyclization, pre-oxidation, oxidation, and deoxidation. Below, the editor of carbon fiber fabric will explain in detail.
1. Spinning
As the first step in the carbon fiber production process, it mainly involves separating the raw materials into fibers, which is a physical change. During this process, heat and mass transfer occur between the solidifying liquid and the spinning solution, followed by the precipitation of PAN, forming a gel structure of filaments.
2. Stretching
The requirements for this process are a temperature of 100 to 300 degrees. The operation combines the stretching effect of oriented fibers. It is also an important step for the high modulus, refinement, and densification of PAN fibers.
3. Stabilization
Using a heating oxidation method at 400 degrees allows the thermoplastic PAN linear macromolecular chains to be transformed into a non-plastic heat-resistant trapezoidal structure, ensuring that even under high-temperature conditions, it does not melt or burn, thus maintaining the fiber form and keeping the thermodynamics stable.
4. Graphitization
The temperature needs to be maintained at 1000 to 2000 degrees to drive off the non-carbon elements in PAN, resulting in carbon fibers with a graphite structure containing 90% carbon content.
The above is an introduction to the four major manufacturing processes of carbon fiber fabric. I believe everyone will have a better understanding of this. Future articles will be updated regularly, and we look forward to your continued attention to our site.
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