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The carbon fiber is a performance of the new material , widely used in aerospace and other high-tech fields , is the peak of the overall performance of the materials in the world today , has been hailed as the black revolution of the 21st century . Therefore, the study of the carbon fibers is of great significance . The development and production of carbon fiber in China has made some achievements , but in general , the level of development and production is still relatively low , is equivalent to only abroad in the 1970s , the final level . Pitch-based carbon fiber production capacity of earlier research and development , but there is a large gap compared with foreign countries in the development, production and application . Pitch carbon fiber developed through the modulation of refining raw bitumen , asphalt , and then the formation of pitch carbon fiber precursor pitch carbon fiber precursor must be pre - oxidation and carbonization treatment , in order to become industrial carbon fiber thread available . In this paper, the pitch carbon fiber closing wire system part to discuss , design , develop and produce a set of one thousand meters pitch carbon fiber filament wire resumption and stable operation closing wire control device . Pitch carbon fiber closing wire system using closed-loop control scheme , PLC as the control core of the control system , and design a humane man-machine interface . The system through experiments run to reach the desired goals , to close out a one thousand meters of asphalt carbon fiber thread , the whole system is stable . At present, the development and production of asphalt carbon fiber thread has been started practical application . The development of carbon fiber thread of one thousand meters of asphalt , filling the domestic blank , the major contribution of the development and production of carbon fiber .
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