Polyimide Fibers with High Strength and High Modulus: Preparation, Structures, Properties, and Applications

• Published in: Macromolecular rapid communications. Vol. 39; no. 20; pp. e1800141 - n/a
• Main Authors: Zhang, Mengying, Niu, Hongqing, Wu, Dezhen
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01.10.2018
• Subjects: Aerospace engineering; Aerospace industry; Elastic Modulus; Fabrication; Fibers; high modulus; High strength; Imides - chemical synthesis; Imides - chemistry; Materials Testing; Molecular Structure; Morphology; Nuclear energy; Organic fibers; polyimide fibers; Production methods; property; structure; Surface Properties; Tensile Strength; polyimide fibers; property; high modulus; structure
• ISSN: 1022-1336; 1521-3927; 1521-3927
• DOI: 10.1002/marc.201800141

High strength and high modulus polyimide (HSHMPI) fibers are a type of novel high‐performance organic fiber with an initial modulus higher than 90 GPa and extremely high tensile strength over 2.5 GPa realizing broad applications in the fields of electronic, engineering, aerospace, and atomic energy industries. There are currently two synthetic pathways, i.e., one‐step and two‐step methods, developed for the manufacture of HSHMPI fibers. An integrated fabrication process involving wet‐spinning followed by thermal imidization is accepted as a typical two‐step synthetic route for industrialization of HSHMPI fibers. In this article, the classification, synthetic method and technology, molecular structure, morphology, microstructures, and properties of HSHMPI fibers are summarized extensively. The effects of molecular structure and synthetic technology on the microstructures and overall performance of HSHMPI fibers are discussed. In addition, the trend in development and the application prospect of HSHMPI fibers are analyzed accordingly. High strength and high modulus polyimide (HSHMPI) fibers have received broad applications in the fields of electronic, engineering, and aerospace industries due to the outstanding overall performance. The molecular structure, fabrication pathways, microstructures, properties, industrialization, and current applications of HSHMPI fibers are summarized extensively. The significant topics about the correlations between structure and properties of HSHMPI fibers are discussed.