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Influence of the compensation phenomena of polymeric matrix composites

  • Polymers
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Abstract

Thermally Stimulated Creepe and Current (TSCr and TSC) have been used for investigating the interface/interphase in DGEBA-DDA matrix and glass beads composites. In all samples, a complex α retardation/relaxation mode is observed near the glass transition of the matrix. A study of the fine structure has shown that, for the elastic processes, the activation enthalpies are ranging from 2 and 8 eV, while for the dielectric ones, they are restricted between 0.5 and 1.5 eV. Moreover, for a given activation enthalpy, the preexponential factor τo and the activation entropy ΔS are characteristic of matrix filler interface.

Zusammenfassung

TSCr und TSC wurden zur Untersuchung der Grenzfäche/Grenzphase in einer DGEBA-DDA Matrix und in Glaskugelverbundstoffen. Bei allen Proben wird in der Nähe des Glasumwandlungspunktes der Matrix eine komplexe Verzögerung/Relaxation beobachtet. Eine Untersuchung der Feinstruktur ergab, daß die Aktivierungsenthalpie für die elastischen Prozesse zwischen 2 und 8 eV liegt, während sie für die dielektrischen auf 0.5 und 1.5 eV beschränkt bleibt. Weiterhin sind präexponentieller Faktor τo und die Aktivierungsentropie ΔS bei vorgegebener Aktivierungsenthalpie charakteristisch für die Matrixfüllstoffgrenzfläche.

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Lavergne, C., Dufresne, A., Chatain, D. et al. Influence of the compensation phenomena of polymeric matrix composites. Journal of Thermal Analysis 40, 705–710 (1993). https://doi.org/10.1007/BF02546642

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  • DOI: https://doi.org/10.1007/BF02546642

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