Hostname: page-component-8448b6f56d-c4f8m Total loading time: 0 Render date: 2024-04-24T15:30:27.476Z Has data issue: false hasContentIssue false
  • English
  • Français

Preferred orientation of pitch precursor fibers

Published online by Cambridge University Press:  31 January 2011

T. Hamada ,
M. Furuyama ,
Y. Sajiki ,
T. Tomioka  and
M. Endo
T. Hamada
Affiliation:
Nippon Steel Corporation, R & D Laboratories-1, 1618 Ida, Nakahara-ku, Kawasaki 211, Japan
M. Furuyama
Affiliation:
Nippon Steel Corporation, R & D Laboratories-1, 1618 Ida, Nakahara-ku, Kawasaki 211, Japan
Y. Sajiki
Affiliation:
Nippon Steel Corporation, R & D Laboratories-1, 1618 Ida, Nakahara-ku, Kawasaki 211, Japan
T. Tomioka
Affiliation:
Nippon Steel Corporation, R & D Laboratories-1, 1618 Ida, Nakahara-ku, Kawasaki 211, Japan
M. Endo
Affiliation:
Faculty of Engineering, Shinshu University, 500, Wakasato, Nagano 380, Japan
Get access

Abstract

Spinning condition dependences of the microstructures of a pitch precursor fiber which is a raw material for carbon fiber preparation were studied in detail. The degree of preferred orientation of the molecules in a pitch precursor fiber along the fiber axis was higher when spinning was done at a lower mesophase pitch viscosity. An intermediate diameter gave the highest degree of preferred orientation. The degree of preferred orientation of the molecules in an extruded pitch rod was especially low. The crystallite size Lc(002) of the pitch precursor fiber also was varied by controlling the spinning conditions, and exhibited a good correlation with the degree of preferred orientation. Mesophase pitch at a higher temperature possessed a smaller Lc(002) and a larger d002. The small Lc(002) observed at high temperature was maintained by a rapid cooling to room temperature, but the large d002 relaxed to a small value at room temperature, even with rapid cooling. A qualitative model for the formation of a preferred orientation through spinning is proposed.

Type
Articles
Information
Journal of Materials Research , Volume 5 , Issue 6 , June 1990 , pp. 1271 - 1280
Copyright
Copyright © Materials Research Society 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Ruland, W., Appl. Polym. Symp., No. 9, 293 (1969).Google Scholar
2Singer, L.S., Carbon 16, 409 (1978).CrossRefGoogle Scholar
3Matsumura, Y., Sekiyu-Gakkai-Shi 30 (5), 291 (1987) (in Japanese).Google Scholar
4Matsumura, Y., Kagaku-to-Kogyo 41 (1), 133 (1988) (in Japanese).Google Scholar
5Shimizu, J., Toriumi, K., and Tamai, K., Sen-i Gakkai-Shi 33 (5), 208 (1977) (in Japanese).CrossRefGoogle Scholar
6White, J.L., Pure & Appl. Chem. 55 (5), 765 (1983).Google Scholar
7Dees, J. R. and Spruiell, J. E., J. Appl. Polym. Sci. 18, 1053 (1974).Google Scholar
8Nadella, H., Henson, H. M., Spruiell, J. E., and White, J. L., J. Appl. Polym. Sci. 21, 3003 (1977).CrossRefGoogle Scholar
9Koyama, K., Aoki, K., and Ishizuka, O., Sen-i Gakkaishi 44 (2), 59 (1988) (in Japanese).Google Scholar
10Diefendorf, R. J. (private communication) and D. S. Kurtz, Thesis submitted to the Graduate Faculty of Rensselaer Polytechnic Institute, Troy, NY for the Degree of Master of Science (1983).Google Scholar
11Hamada, T., Nishida, T., Sajiki, Y., Matsumoto, M., and Endo, M., J. Mater. Res. 2 (6), 850 (1987).Google Scholar
12Inagaki, M., Tanso Zairyo Nyumon, edited by Tanso Zairyo Kenkyu Kai, 11 (1973) (in Japanese).CrossRefGoogle Scholar
13Hamada, T., Sajiki, Y., Furuyama, M., and Tomioka, T., J. Mater. Res. 4 (4), 1027 (1989).CrossRefGoogle Scholar
14Hamada, T., Furuyama, M., Sajiki, Y., and Tomioka, T., Preprint for the 15th Annual Meeting of Carbon Society of Japan, 106 (1988).Google Scholar
15Hamada, T., Nishida, T., Furuyama, M., and Tomioka, T., Carbon 26 (6), 837 (1988).Google Scholar
16Chen, K. J. and Diefendorf, R. J., 18th Bienn. Conf. Carbon, 1987, Extended Abstract, p. 292.Google Scholar
17Hamada, T., Nishida, T., Sajiki, Y., Furuyama, M., and Tomioka, T., 18th Bienn. Conf. Carbon, 1987, Extended Abstract, p. 225.Google Scholar
18Nelson, J. B. and Riley, D. P., Proc. Phys. Soc. 57, 477 (1945).Google Scholar
19Riley, D. P., Proc. Phys. Soc. 57, 486 (1945).Google Scholar
20Herzberg, G., Molecular Spectra and Molecular Structure I (Spectra of Diatomic Molecules) (Van Nostrand Reinhold Company, New York, 1950), 2nd ed., p. 90.Google Scholar
21Stevens, W.C. and Diefendorf, R. J., Proc. of 4th Int. Carbon Conf. Carbon 1989, Baden-Baden, FRG, 61 (1986).Google Scholar
22Matsumoto, T., Pure & Appl. Chem. 57 (11), 1553 (1985).CrossRefGoogle Scholar
23Yoshida, Y., Kajiwara, T., and Funatsu, K., Preprint for 36th Annual Meeting of Rheology Society of Japan, 5 (1988).Google Scholar
24Bagley, E. B., Storey, S. H., and West, D. C., J. Appl. Polym. Sci. 7, 1661 (1963).Google Scholar
25Kaito, A., Nakayama, K., and Kanetsuna, H., Preprint for Conf. of Annual Meeting of Polym. Society of Japan, 2605 (1983) (in Japanese).Google Scholar
26Nanzai, Y., Kobunshi 34, 444(1985) (in Japanese).Google Scholar
27Chen, S. H. and Diefendorf, R. J., 16th Bienn. Conf. Carbon, 1983, Extended Abstract, p. 11.Google Scholar
28Diefendorf, R. J., ACS Symp. Ser. No. 260, 209 (1984).Google Scholar