Effects of Mesophase Pitch Pre-Oxidation on Structure and Flexural Strength of 2D C/C Composites

Zhi Hai Feng; Xiu Jun Liu; Tong Qi Li; Zhen Fan

doi:10.4028/www.scientific.net/AMR.774-776.654

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 774-776Effects of Mesophase Pitch Pre-Oxidation on...

Effects of Mesophase Pitch Pre-Oxidation on Structure and Flexural Strength of 2D C/C Composites

Abstract:

Two dimensional carbon/carbon composites (2D C/C) were prepared by the low temperature-heat molding technique with PAN based carbon fabric as reinforcement and pre-oxidation mesophase pitch as matrix precursors. The effect of pre-oxidation for mesophase pitch on microstructure and flexural strength of 2D C/C composites has been evaluated using polarized light optical microscope, scanning electron microscope and three-point bending tests. As pre-oxidation temperature rising, the softening point of mesophase pitch increases, oxygen-containing functional groups increases as well, QI (quinoline insoluble) content increases significantly. The flexural strength dependence of pre-oxidation temperature has been studied and correlated with microstructure of 2D C/C composites. Results show that flexural strength increase when the pre-oxidation temperature rising, and meet its peak at 140°C, reached 44.7514MPa.

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Periodical:

Advanced Materials Research (Volumes 774-776)

Pages:

654-659

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.774-776.654

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Online since:

September 2013

Authors:

Zhi Hai Feng, Xiu Jun Liu, Tong Qi Li, Zhen Fan

Keywords:

2D c/c Composites, Flexural Strength, Mesophase Pitch, Pre-Oxidation

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