(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China)
Keywords:
-
CLC:
PACS:
-
DOI:
10.7502/j.issn.1674-3962.2012.10.03
DocumentCode:
Abstract:
Polyimide is a class of polymers containing the imide ring in the main chains. This unique conjugation structure endows the polyimide fibers with many useful properties, such as excellent mechanical properties, outstanding thermal and thermooxidative stabilities and chemical resistance. Therefore, the high performance fibers will be extensively used in many areas, such as aeronautics and astronautics, environmental protection, etc. However, most of the polyimides have high melting or softening temperatures, resulting in a poor solubility in most organic solvents, which have restrict their preparation and application. The improvements of design of various chemical structures and synthesis technology enhance their performances such as high strength and high modulus, thermostability and radiationresistant. Spinning technology and further progress of macromolecular aggregation on the fibers motivate the rapid development of the high performance fibers . In this review, we give an overview of the excellent performances, preparation and applications of polyimide fibers. Moreover, the recent achievements and industrialization progress of the fibers are introduced.