Effects of drawing process on the structure and tensile properties of textile-grade PAN fiber and its carbon fiber

Title
Effects of drawing process on the structure and tensile properties of textile-grade PAN fiber and its carbon fiber
Authors
이화영이로운이승욱조한익조성무이성호
Keywords
carbon fiber; drawing process; tensile properties; XRD; textile polyacrylonitrile
Issue Date
2014-05
Publisher
E-Polymers [electronic resource]
Citation
VOL 14, NO 3, 217-224
Abstract
Carbon fibers (CFs) were prepared using low-cost, textile-grade polyacrylonitrile fibers, which were 200% to 400% drawn in a hot water bath at 90°C or/and in a tubular furnace at 180°C. X-ray diffractograms confirmed that the drawing process led to higher crystallinity and molecular orientation. These fibers were stabilized in a convection oven at 25–255°C for 390 min. After stabilization, carbonization was performed to obtain carbon fibers. The tensile strength of CFs without drawing was ∼0.8 GPa; however, CFs with 200% and 200% drawing in a hot water bath at 90°C and in a tubular furnace at 180°C, respectively, showed a tensile strength of ∼1.7 GPa. These results suggest that the drawing process of precursor fibers affected the tensile properties of the resulting CFs significantly.
URI
http://pubs.kist.re.kr/handle/201004/47539
ISSN
16187229
Appears in Collections:
KIST Publication > Article
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