The performance of carbon fiber precursor determines the final performance of carbon fiber to a great extent. Few defects

fine denier

high orientation and high purification are the basic requirements of high-performance precursor. The orientation degree of precursor largely determines the orientation structure of graphite like lamella formed during the pre oxidation and carbonization of carbon fiber

which will affect the final strength and modulus of carbon fiber. Therefore

it is of great significance to prepare highly oriented carbon fiber precursor. This paper focuses on the preparation process of highly oriented carbon fiber precursor

first analyzes the importance of highly oriented precursor

then summarizes and analyzes the influence of spinning method and drafting process on the degree of orientation in the precursor preparation process

and introduces the calculus nano stacking method and the preparation process of highly oriented composite fiber precursor. It is pointed out that high-quality primary fiber and precursor with stable orientation arrangement are the key to the preparation of highly oriented carbon fiber precursor

which is expected to contribute to the research on improving the orientation of precursor and then improving the properties of carbon fiber in the future.