Carbon fiber is a new type of non-metallic material made of organic matrix fibers (such as viscose filaments, polyacrylonitrile or pitch) using pyrolysis to remove all elements except carbon under an inert gas at a high temperature of 1000-3000 degrees. It has high specific strength, high specific modulus, fatigue resistance, creep resistance, higher temperature resistance than heat-resistant steel, corrosion resistance, wear resistance, dimensional stability, electrical conductivity, heat conduction, low thermal expansion coefficient, self-lubricating and energy absorption than stainless steel A series of excellent performance such as earthquake resistance.
Another important feature is the small proportion. The specific gravity is generally around 1.6, which is one-half of aluminum and one-fifth of steel. Although carbon fiber is light in weight, it has high strength and high "specific strength" (specific strength = material strength limit / material unit weight), and carbon fiber also has an excellent fineness (one of the notation of fineness is 9000 meters) The grams of long fibers are generally only about 19 grams; the tensile force is as high as 300KG/MM2; at present, there are few other materials with so many excellent and valuable electrical, thermal and mechanical properties like carbon fiber.
