Carbon fibers are PAN fiber, asphalt fiber, viscose filament or phenolic fibers obtained by carbonization; according to the state of divided filament, staple fibers and chopped fibers; divided by the mechanical properties and high-performance general-purpose type. General-purpose carbon fiber strength of 1,000 megapascals (MPa), a modulus of about 100GPa. High-performance carbon fiber is divided into high strength (strength 2000MPa, modulus 250GPa) and high model (modulus 300GPa above). Strength greater than 4000MPa, also known as ultra-high-strength type; modulus is called ultra-high model of 450GPa. With the development of aerospace and aviation industry, but also the emergence of high strength and high elongation carbon fiber, its elongation greater than 2%. The largest amount of polyacrylonitrile PAN-based carbon fibers.
Currently more common applications of carbon fiber is mainly polyacrylonitrile carbon fibers and pitch carbon fibers. Carbon fiber manufacturing process includes four fiber spinning, thermal stabilization (pre-oxidation), carbon, graphite, and so on. During chemical changes accompanying include dehydrogenation, cyclization, pre-oxidation, oxidation and deoxidation. Carbon fibers are PAN fiber, asphalt fiber, viscose filament or phenolic fibers obtained by carbonization; according to the state of divided filament, staple fibers and chopped fibers; divided by the mechanical properties and high-performance general-purpose type. General-purpose carbon fiber strength of 1,000 megapascals (MPa), a modulus of about 100GPa. High-performance carbon fiber is divided into high strength (strength 2000MPa, modulus 250GPa) and high model (modulus 300GPa above). Strength greater than 4000MPa, also known as ultra-high-strength type; modulus is called ultra-high model of 450GPa. With the development of aerospace and aviation industry, but also the emergence of high strength and high elongation carbon fiber, its elongation greater than 2%. The largest amount of polyacrylonitrile PAN-based carbon fibers.
Currently more common applications of carbon fiber is mainly polyacrylonitrile carbon fibers and pitch carbon fibers. Carbon fiber manufacturing process includes four fiber spinning, thermal stabilization (pre-oxidation), carbon, graphite, and so on. During chemical changes accompanying include dehydrogenation, cyclization, pre-oxidation, oxidation and deoxidation.