Chapter 19. Potential Qualities of Pitch-Based Carbon Fiber for High Temperature Composites
- John B. Wachtman Jr.
Published Online: 28 MAR 2008
Copyright © 1994 The American Ceramic Society
Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - A: Ceramic Engineering and Science Proceedings, Volume 15, Issue 4
How to Cite
Kohno, T., Mutoh, A., Kude, Y. and Sohda, Y. (1994) Potential Qualities of Pitch-Based Carbon Fiber for High Temperature Composites, in Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - A: Ceramic Engineering and Science Proceedings, Volume 15, Issue 4 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314500.ch19
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375327
Online ISBN: 9780470314500
- interference method;
- gravimetxy method;
The properties of petroleum pitch-based carbon fiber Granoc® XN-C were evaluated for application to high temperature composites such as C/C and CMC. The handleability of the fibers was evaluated by a clip test. XN-C, which has a tensile modulus of 245 GPa and a tensile strength of 3530 MPa, exhibited much higher clip strength than other pitch-based carbon fibers. After high temperature heat treatment which simulates C/C processing, the modulus of XN-C increased and the strength remaind high. Through heat treatment which simulates the conditions of C/C in use, the modulus and the strength of the fiber were stable. The thermal conductivity of UD-C/C made from XN-C and pitch-based matrix was 660 W/mK after 3000 degrees C heat treatment. Thus, in the first stage of composite fabrication, XN-C is able to put its handleability to practical use for shaped fabrics (2D and 3D) for applications such as space plane model components made of C/C and gas turbine model components made of ceramic matrix conposites (CMC). In the second stage, XN-C reveals its potential qualities (high modulus, high strength and high thermal conductivity) in the composites by heat treatment before or during the densifying process.