Polyacrylonitrile-based carbon fiber is an indispensable key material in the field of aerospace, defense, and civil industry. It plays an important role in national defense security and national economic development. Polyacrylonitrile carbon fiber production technology mainly has two technical routes, wet spinning and dry-jet wet spinning. Dry-jet wet-spinning technology has the advantages of high production efficiency, good carbon fiber quality, and low production costs. At present, the world's high-end grade carbon fiber mainly uses dry spraying. Production by wet spinning technology.
Researcher Zhang Shouchun of Shanxi Coal Chemical Research Institute has undertaken a key deployment project of the Chinese Academy of Sciences around T1000-class ultra-high-strength carbon fiber preparation, and recently passed the acceptance inspection organized by the Chinese Academy of Sciences. This technology adopts the dry-jet wet spinning route, carries out the optimization design of the precursor chain structure, the spinning fluid rheology control, the fiber micro-nano structure control and the key equipment technology system research, and achieves the breakthrough of the key core technology of dry-jet wet spinning. The prepared T1000-class ultra-high-strength carbon fiber has both high tensile strength and high elastic modulus. After testing by a third-party agency, the performance indicators have reached the advanced level in the industry.