Effect of sonication applied during production of carbon fiber/epoxy resin composites evaluated by differential scanning calorimetry and thermo-gravimetric analysis

Authors

  • Gordana Bogoeva-Gaceva Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University, Skopje
  • Dimko Dimeski Goce Delčev University, Štip
  • Niko Heraković Faculty of Mechanical Engineering, University in Ljubljana, Ljubljana

DOI:

https://doi.org/10.20450/mjcce.2011.34

Keywords:

carbon fibers, epoxy composites, ultrasound treatment, DSC, thermal degradation

Abstract

The influence of ultrasonic treatment, applied during the impregnation of carbon fiber bundle by
epoxy resin system, on thermal behavior of carbon fiber/epoxy resin composites in the course of crosslinknetwork
formation has been analyzed by differential scanning calorimetry (DSC). It was previously
shown [1] that this treatment has resulted in drastically increased interlaminar shear strength (ILSS) of
the bulk composites, produced by hot pressing. The enhanced ILSS was attributed to the formation of
more homogeneous and dense network, as revealed by epoxy consumption rate and increased Tg. In this
paper, DSC analysis is applied to further investigate peculiarities of carbon fiber/epoxy systems, exposed to
ultrasonic treatment, during isothermal and non-isothermal curing and post-curing. The acceleration of the
curing reaction as a consequence of sonication effects was found for all fiber/polymer systems, regardless
the surface chemistry of the fibers. The stronger interfacial bond in epoxy sized carbon fiber composites,
favored by ultrasound treatment, has also generated differences in thermal behavior of the composites
during their degradation followed by TGA/DTG.

References

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Published

2011-12-05

How to Cite

Bogoeva-Gaceva, G., Dimeski, D., & Heraković, N. (2011). Effect of sonication applied during production of carbon fiber/epoxy resin composites evaluated by differential scanning calorimetry and thermo-gravimetric analysis. Macedonian Journal of Chemistry and Chemical Engineering, 30(2), 189–195. https://doi.org/10.20450/mjcce.2011.34

Issue

Vol. 30 No. 2 (2011)

Section

Materials Chemistry

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