Zhi-xin Dong, Tao Feng, Chao Zheng, et al. Mechanical Properties of Polyimide/Multi-walled Carbon Nanotube Composite Fibers[J]. Chinese Journal of Polymer Science, 2016, 34(11): 1386-1395.
DOI:
Zhi-xin Dong, Tao Feng, Chao Zheng, et al. Mechanical Properties of Polyimide/Multi-walled Carbon Nanotube Composite Fibers[J]. Chinese Journal of Polymer Science, 2016, 34(11): 1386-1395.DOI: 10.1007/s10118-016-1841-1.
Mechanical Properties of Polyimide/Multi-walled Carbon Nanotube Composite Fibers
A series of polyimide (PI)/multi-walled carbon nanotube (MWCNT) composite fibers were prepared by copolymerizing a mixture of monomers and carboxylic-functionalized MWCNTs
followed by dry-jet wet spinning
thermal imidization
and hot-drawing process. The content of the carboxylic groups of MWCNTs significantly increased when treated with mixed acid
whereas their length decreased with treatment time. Both the carboxylic content and length of MWCNTs influenced the mechanical properties of the composite fibers. Fiber added with 0.1 wt% MWCNTs treated for 4 h exhibited the best mechanical properties
i.e
.
1.4 GPa tensile strength and 14.30% elongation at break
which were 51% and 32% higher than those of pure PI fibers
respectively. These results indicated that a suitable MWCNT content strengthened and toughened the resultant PI composite fibers
simultaneously. Moreover
raising draw ratio resulted in the increase of tensile strength and tensile modulus of the composite fibers.
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Related Author
Zhao Yong
Li Guo-min
Liu Fang-fang
Dai Xue-min
Dong Zhi-xin
Qiu Xue-peng
Tanveer ul Haq Zia
Ahmad Nawaz Khan
Related Institution
University of Chinese Academy of Sciences
Department of Materials Engineering, School of Chemical and Materials Engineering, National University of Sciences and Technology, H-12
Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, College of Materials Science and Engineering, Guilin University of Technology
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University
Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link