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Journal of Materials Science

, Volume 30, Issue 5, pp 1225–1232 | Cite as

Dynamic mechanical properties of carbon-carbon composites

  • Wen-Chi Chang
  • Nyan-Hwa Tai
  • Chen-Chi M. Ma
Papers

Abstract

The dynamic mechanical analysis (DMA) method was utilized to investigate the dynamic mechanical properties of the carbon-phenolic composite, and of carbon-carbon (C/C) composites carbonized at 1000°C, and graphitized at 2200°C. The measurements were performed in the temperature range 50–450°C. Results show that the carbon-phenolic composite has the highest storage modulus, while the carbonized C/C composites possess higher storage modulus than the graphitized C/C composite. The storage moduli of carbonized and graphitized C/C composite do not change significantly in the test temperature range. The tan δ, loss factor, of carbonized C/C composites increases 59.5% during the tests from 50 to 450°C, and that of the graphitized C/C decreases 9.74% in the same temperature range; graphitized C/C shows the highest tan δ at 50 °C. The carbon-phenolic composite shows a damping peak at 250 °C, which is probably due to the transition from glassy state to rubbery state of the phenolic matrix. The higher tan δ of the graphitized C/C composite may be due to matrix graphitization, fibre-matrix debonding and crack formation, which were observed on the micrographs.

Keywords

Polymer Material Processing Test Temperature Storage Modulus Mechanical Analysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • Wen-Chi Chang
    • 1
  • Nyan-Hwa Tai
    • 2
  • Chen-Chi M. Ma
    • 1
  1. 1.Institute of Chemical EngineeringNational Tsing Hua UniversityHsin-ChuTaiwan
  2. 2.Materials Science CenterNational Tsing Hua UniversityHsin-ChuTaiwan

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