Abstract
The blending of mesophase pitch with isotropic PVC pitch was studied to improve their properties as a precursor for carbon fibre. PVC pitch prepared at 420° C which remained almost isotropic was found to be miscible with coal tar-derived mesophase pitch without reducing the anisotropic content and spinnability. The tensile strength of pitch fibres remained unchanged by the blending; however, the reactivity for stabilization was enhanced. The resultant carbon fibres from the blend exhibited slightly higher tensile strength. In contrast, petroleum-derived mesophase pitch failed to dissolve the PVC pitch, leaving a number of isotropic droplets. The structural factors of mesophase pitches with regard to their compatibility with PVC pitches are briefly discussed.
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References
S. Otani, K. Okuda andH. S. Matsuda, “Carbon Fibre” (1983) p. 231.
S. Otani,Carbon 3 (1965) 31.
Idem, Molec. Cryst. Liq. Cryst. 63 (1981) 249.
S. Chwastiak, UK Patent Application GB 2005298 A (1979).
D. Riggs andR. J. Diefendorf, US Patent 4208267 (1980).
S. Otani, K. Okuda andH. S. Matsuda, “Carbon Fibre” (1983) p. 246.
S. Otani, K. Okuda andH. S. Matsuda,ibid. p. 139.
S. Otani andA. Oya, “Carbon Fibre Nyumon” (1983) p. 71.
I. Mochida andY. Korai,J. Fuel Soc. Jpn 64 (1985) 802.
I. Mochida, Y. Sone, Y. D. Park andY. Korai,J. Mater. Sci. 20 (1985) 3177.
I. Mochida andY. Korai, Japan Carbon Society, 11th Annual Meeting, Kyoto, Extended Abstracts (1984) p. 138.
T. Kasu andH. Marsh, Japan Carbon Society, 12th Annual Meeting, Tokyo, Extended Abstracts (1985) p. 60.
Y. Korai andI. Mochida,Carbon 23 (1985) 97.
W. C. Stevens andR. J. Diefendorf, Proceedings of 4th International Conference, Baden-Baden, July (1986) p. 37.
J. L. White andP. M. Sheaffeer, 17th Biennial Conference on Carbon, Lexington, Kentucky, Extended Abstracts (1985) p. 161.
Y. Korai andI. Mochida, 13th Annual Meeting, Tsukuba, Extended Abstracts (1986) p. 12.
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Mochida, I., Toshima, H., Korai, Y. et al. Blending mesophase pitch to improve its properties as a precursor for carbon fibre Part 1 Blending of PVC pitch into coal tar and petroleum-derived mesophase pitches. J Mater Sci 23, 670–677 (1988). https://doi.org/10.1007/BF01174704
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DOI: https://doi.org/10.1007/BF01174704