Abstract
The properties of four kinds of Type II carbon fibers, which had been precarbonized at 300 °C, 400 °C, 500 °C, and 600 °C, respectively, during two-stage continuous carbonization, were measured after being air oxidized for periods of 1 to 6 min at 550 °C. The effects of precarbonization temperature on mechanical properties, density, morphology, elemental composition, and microstructure of the carbon fibers during the air oxidation are discussed in this article. The precarbonization process strongly affected the surface properties and mechanical properties of the final oxidized carbon fibers. The carbon fibers developed from the different precarbonization temperatures all had different structures. The carbon fibers that had been precarbonized at 300 °C had a more ordered structure than other fibers after air oxidation. These carbon fibers also had a higher performance than the other fibers. Carbon fibers also showed different oxidation behaviors caused by differences in surface morphology resulting from each different precarbonization temperature. Optimum conditions not only improved the tensile strength and modulus, but also increased the density and oxygen content. Experimental results showed that the tensile strength of the carbon fibers precarbonized at 300 °C increased from 2.4 GPa to 4.3 GPa (80%) after 6 min oxidation at 550 °C.
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References
J.N. Hay, J. Polym. Sci. A1 (6), 2127 (1968).
A.J. Clarks and J.F. Bailey, Nature (London) 243, 146 (1973).
E. Fitzer and D.J. Muller, Carbon 13, 163 (1975).
W. Watt, US Patent 3 367 812 (1968).
J. W. Herrick, Air Force Mater. Lab. Techn. Rep. AFML-TR66-178 (1966).
J. B. Donnet, Carbon, 6, 161 (1968).
D. Clark, N. J. Wadsworth, and W. Watt, Proc. 2nd Carbon Fiber Conf., Plastics Ins., London (1974), p. 44.
O.P. Bahl, R.B. Mathur, and T.L. Dhami, Polym. Eng. Sci. 24, 455 (1984).
D. W. McKee and V. J. Mimeault, in Chemistry and Physics of Carbon, edited by P. L. Walker, Jr. and P. A. Thrower (Marcel Dekker Inc., New York, 1973), p. 151.
J. B. Donnet and R. C. Bansal, Carbon Fibers (Marcel Dekker Inc., New York, 1984), Chap. 3.
T.H. Ko, H. Y. Ting, and C.H. Lin, J. Appl. Polym. Sci. 35, 631 (1988).
T.H. Ko, P. Chiranairadul, H.Y. Ting, and C.H. Lin, J. Appl. Polym. Sci. 37, 541 (1989).
T.H. Ko, SAMPE Quarterly 22, 13 (1991).
T.H. Ko, C.C. Yang, and W.T. Chang, Carbon 31, 583 (1993).
T.H. Ko, J. Appl. Polym. Sci. 42, 1949 (1991).
T.H. Ko, T.C. Day, J. A. Peng, and M.F. Lin, Carbon 31, 765 (1993).
T.H. Ko, P. Chiranairadul, and C.H. Lin, Polym. Eng. Sci. 31, 1618 (1991).
S.C. Bennett and D.J. Johnson, Carbon 17, 25 (1979).
S.E. Stein and R.L. Brown, Carbon 23, 105 (1985).
M. Balasubramanian, M. K. Jain, S. K. Bhattacharya, and A. S. Abhiraman, J. Mater. Sci. 22, 3864 (1987).
T.H. Ko, Carbon (1995, in press).
D.W. Gibson, 18th Int. SAMPE Symp. 18, 165 (1973).
B.D. Cullity, Elements of X-ray Diffraction (Addison-Wesley, Reading, MA, 1978), Chap. 3.
F. Molleyre and M. Bastick, Proc: Conf. Carbon ‘76, Baden-Baden (Deutsche Keram. Gesell., 1976), p. 500.
A. Oberlin, Carbon 17, 7 (1979).
A. Oberlin and M. Oberlin, J. Microsc. 132, 353 (1983).
T.H. Ko, J. Appl. Polym. Sci. 43, 589 (1991).
R. Moreton, Fibre Sci. Technol. 1, 273 (1968).
J.W. Johnson, Appl. Polym. Symp., No. 9, 229 (1969).
J.W. Johnson and D.J. Thorne, Carbon 7, 659 (1969).
R. Moreton and W. Watt, Nature (London) 247, 360 (1974).
J.B. Jones, J.B. Barr, and R.E. Smith, J. Mater. Sci. 15, 2455 (1980).
W.N. Reynolds and J.V. Sharp, Carbon 12, 103 (1974).
D.J. Johnson, J. Phys. D: Appl. Phys. 20, 286 (1987).
S.C. Bennett, D.J. Johnson, and W. Johnson, J. Mater. Sci. 18, 3337 (1983).
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Ko, TH., Li, CH. & Hu, CH. The characterization of high-performance PAN-based carbon fibers developed by continuous carbonization and air oxidation. Journal of Materials Research 10, 1529–1538 (1995). https://doi.org/10.1557/JMR.1995.1529
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DOI: https://doi.org/10.1557/JMR.1995.1529