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http://dx.doi.org/10.7234/composres.2018.31.6.385

The Effect of Heat Treatment Condition on the Mechanical Properties of oxi-PAN Based Carbon Fiber  

Choi, Kyeong Hun (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
Heo, So Jeong (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
Hwang, Sang-Ha (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
Bae, Soo Bin (Agency for Defense Development)
Lee, Hyung Ik (Agency for Defense Development)
Chae, Han Gi (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
Publication Information
Composites Research / v.31, no.6, 2018 , pp. 385-391 More about this Journal
Abstract
In this study, carbon fibers were fabricated via carbonization of oxidized polyacrylonitrile (oxi-PAN) under different carbonization conditions. Carbonization of oxi-PAN fiber was performed under four different temperature (1300, 1400, 1500, $1600^{\circ}C$) with four different fiber tensions (14, 25, 35, 45 MPa). Effect of carbonization process on the structural development and mechanical properties of carbon fiber were characterized by single filament fiber tensile test and Raman spectroscopy. A clear correlation exists between the Raman spectrum and the tensile modulus of carbon fiber and effect of carbonization temperature on the tensile modulus showed increased tendency only at higher fiber tension (${\geq}25MPa$) while tensile strength showed decreased or random tendency. Therefore, it may be concluded that the optimization of carbonization temperature of oxi-PAN fiber also requires optimization of fiber tension.
Keywords
Carbon fiber; Mechanical properties; Structural analysis; Carbonization temperature;
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