Polyacrylonitrile-based carbon fiber enjoys a combined feature of high performance and low specific gravity. It is the material of the first choice for structures of light-weight high-strength and light-weight high-modulus. It is a typical representative of highperformance fiber and finds promising applications around the world. Focusing on the structural properties, the relationship between the preparation process, the structure and the performance of the Polyacrylonitrile-based carbon fiber is discussed. Since the invention of the high-strength carbon fiber, one sees four key stages in the development of the Polyacrylonitrile-based carbon fiber technology in the development of high-strength medium-modulus carbon fiber according to the demand, the continuous innovation of higher-performance carbon fiber, and with the emphasis on high-performance and low-cost in the new century. The development history of domestically produced carbon fibers, and the independent innovations of dimethyl sulfoxide and other process technologies are reviewed, from the highstrength, high-strength medium-modulus, high-modulus and high-modulus high-strength carbon fibers, to low-cost large tow carbon fiber. At the end of the paper, some suggestions are put forward with the new Polyacrylonitrile fiber forming technology, the raw material innovation and the new heat source technology in carbon fiber preparation process as the focus.

Polyacrylonitrile-based carbon fiber  /  preparation technology of high performance carbon frber  /  development history of carbon fiber in China