Injection and stabilization of mesophase pitch in the fabrication of carbon-carbon composites. Part I. Injection process

被引:30
作者
Fathollahi, B [1 ]
Chau, PC [1 ]
White, JL [1 ]
机构
[1] Univ Calif San Diego, Chem Engn Grp, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA
关键词
carbon/carbon composites; mesophase pitch; stabilization; optical microscopy; microstructure;
D O I
10.1016/j.carbon.2004.08.030
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The fabrication of carbon-carbon composites by injection of low viscosity mesophase pitch through a fiber preform followed by stabilization and carbonization was examined. The fully transformed mesophase MOMP and AR pitches were injected through either soft or rigidized disk preforms 35 mm thick and 68 mm in diameter. Injection provided good even filling of major flow channels and fiber bundles. Flow-induced fibrous microstructures were retained by quenching and preserved by stabilization upon carbonization. A second injection cycle was effective in filling voidage created by thermal densification. A third cycle was applied, but required severe injection conditions and provided only incremental improvement. The carbon-carbon composite reached a density of 1.8g/cm(3) after three injection cycles. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:125 / 133
页数:9
相关论文
共 15 条
[1]  
Alam MK, 2004, EXP HEAT TRANSFER, V17, P227, DOI [10.1080/08916150490449055, 10.1080/0891615490449055]
[2]  
BRUCKMANN H, 1983, THESIS U KARLSRUHE
[3]   CARBON-FIBER-REINFORCED CARBON COMPOSITES FABRICATED WITH MESOPHASE PITCH [J].
CHRIST, K ;
HUTTINGER, KJ .
CARBON, 1993, 31 (05) :731-750
[4]   POLARIZED-LIGHT OBSERVATIONS OF FLOW-INDUCED MICROSTRUCTURES IN MESOPHASE PITCH [J].
FATHOLLAHI, B ;
WHITE, JL .
JOURNAL OF RHEOLOGY, 1994, 38 (05) :1591-1607
[5]  
FATHOLLAHI B, IN PRESS CARBON
[6]   Mesophase pitches as matrix precursor of carbon fiber reinforced carbon .2. Stabilization of mesophase pitch matrix by oxygen treatment [J].
Liedtke, V ;
Huttinger, KJ .
CARBON, 1996, 34 (09) :1067-1079
[7]   MESOPHASE PITCH CATALYTICALLY PREPARED FROM ANTHRACENE WITH HF BF3 [J].
MOCHIDA, I ;
SHIMIZU, K ;
KORAI, Y ;
SAKAI, Y ;
FUJIYAMA, S ;
TOSHIMA, H ;
HONO, T .
CARBON, 1992, 30 (01) :55-61
[8]   COMPARATIVE-STUDY OF ISOTROPIC AND MESOPHASE PITCHES DERIVED FROM C9 ALKYLBENZENES [J].
SAKANISHI, A ;
KORAI, Y ;
MOCHIDA, I ;
YANAGIDA, K ;
NODA, M ;
THUNORI, I ;
TATE, K .
CARBON, 1992, 30 (03) :459-466
[9]  
Savage G, 1993, CARBON CARBON COMPOS, P277, DOI 10.1007/978-94-011-1586-5_8
[10]  
White J.L., 1975, PROG SOLID STATE CH, V9, P59