Carbon fiber (CF) is a new type of fiber material with high strength and high modulus fiber with carbon content above 95%. It is a microcrystalline graphite material obtained by stacking organic fibers such as flake graphite crystallites along the axial direction of the fiber and carbonizing and graphitizing. Carbon fiber is "extra-soft inside", its quality is lighter than that of metal aluminum, but its strength is higher than that of steel, and it has corrosion-resistant and high-modulus properties, and is an important material in defense military and civilian use. It not only has the inherent intrinsic properties of carbon materials, but also has the soft processability of textile fibers. It is a new generation of reinforcing fibers.
Carbon fiber has many excellent properties. Carbon fiber has high axial strength and modulus, low density, high specific performance, no creep, high temperature resistance in non-oxidizing environment, good fatigue resistance, specific heat and conductivity between non-metal and Between the metals, the coefficient of thermal expansion is small and anisotropic, the corrosion resistance is good, and the X-ray permeability is good. Good electrical and thermal conductivity, good electromagnetic shielding and so on.
Compared with traditional glass fiber, carbon fiber has more than three times the Young's modulus; compared with Kevlar fiber, the Young's modulus is about 2 times, and it is insoluble in organic solvents, acids and alkalis. Excellent corrosion resistance.
In February 2018, China completely developed its first 100-ton T1000 carbon fiber production line.