Carbon fiber, as its name implies, is not only the inherent intrinsic property of carbon materials, but also the soft processability of textile fibers. It is a new generation of reinforcing fibers. Compared with traditional glass fiber (GF), Young's modulus is more than three times; compared with Kevlar fiber (KF-49), not only the Young's modulus is about 2 times, but also in organic solvents. Insoluble in acid and alkali, the corrosion resistance is outstanding. Some scholars immersed PAN-based CF in a strong alkaline NaOH solution in 1981. It has been more than 30 years since it has maintained its fiber shape.
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