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Determination of the activation energies for α and β transitions of a system containing a diglycidyl ether of bisphenol a (DGEBA) and 1,3-bisaminomethylcyclohexane (1,3-BAC)

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Abstract

Using dynamic mechanical analysis (DMA) we have studied the variation with the frequency of the dynamic mechanical properties (storages modulus,E'; loss modulus,E'' and loss tangent or tan σ) for a system containg a diglycidyl ether of bisphenol A (DGEBA) and 1,3-bisaminomethylcyclohexane (1,3-BAC). These properties were measured both in the glass transition and β transition regions. An increase in frequency caused a shift of tan σ peak positions in both regions toward higher temperature. Finally, we report the activation energies of a DGEBA/1,3-BAC expoxy system for α and β transitions.

Zusammenfassung

Mittels DMA wurde für ein System aus einem Diglycidylether von Bisphenol A (DGEBA) und 1,3-Bisaminomethylcyclohexan (1,3-BAC) die Abhängigkeit der dynamischen mechanischen Eigenschaften (SpeichermodulE' VelustmodulE'' und Verlustangens oder tan σ) von der Frequenz untersucht. Diese Eigeschaften wurden sowholh in der Glasumwandlungs- als auch in der β-Übergangsregion gemessen. Die Erhöhung der Frequenz verursacht in beiden Regionen ein Verschieben des tan σ Peaks zu höheren Temperaturen. Letztlich beschreiben wir die Aktivierungsenergie des Epoxysystems DGEBA/1.3-BAC für die α-und β-Übergänge.

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References

  1. R. E. Wetton, ‘Developments in Polymer Characterization’, J. V. Dawkins (Ed.), Elsevier, Amsterdam 1986, p. 179.

    Google Scholar 

  2. L. H. Sperling, Introduction to Physical Polymer Science, Wiley, 2nd ed., New York 1992, chapter 8

    Google Scholar 

  3. N. G. McCrum, B. E. Read and G. Williams, Anelastic and Dielectric Effects in Polymeric Solids, Wiley, New York 1987, p. 478–4.

    Google Scholar 

  4. Ch. D. Wingard and Ch. L. Beatty, J. Appl. Polym. Sci., 41 (1990) 2539.

    Article  CAS  Google Scholar 

  5. C. Jordan, J. Galy and J. P. Pascault, J. Appl. Polym. Sci., 46 (1992) 859.

    Article  CAS  Google Scholar 

  6. F. Galloudec, F. Costa-Torro, F. Laupretre and B. Jasse, J. Appl. Polym. Sci., 47 (1993) 823.

    Article  Google Scholar 

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Barral, L., Cano, J., López, A. et al. Determination of the activation energies for α and β transitions of a system containing a diglycidyl ether of bisphenol a (DGEBA) and 1,3-bisaminomethylcyclohexane (1,3-BAC). Journal of Thermal Analysis 41, 1463–1467 (1994). https://doi.org/10.1007/BF02549942

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  • DOI: https://doi.org/10.1007/BF02549942

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