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Journal of Thermal Analysis and Calorimetry

, Volume 78, Issue 1, pp 113–124 | Cite as

Cure behavior of epoxy resin/MMT/DETA nanocomposite

  • W. B. Xu
  • Z. F. Zhou
  • P. S. He
  • W.-P. Pan
Article

Abstract

The Flory's gelation theory, non-equilibrium thermodynamic fluctuation theory and Avrami equation have been used to predict the gel time t g and the cure behavior of epoxy resin/organo-montmorillonite/diethylenetriamine intercalated nanocomposites at various temperatures and organo-montmorillonite loadings. The theoretical prediction is in good agreement with the experimental results obtained by dynamic torsional vibration method, and the results show that the addition of organo-montmorillonite reduces the gelation time t gand increases the rate of curing reaction, the value of k, and half-time of cure after gelation point t1/2 decreases with the increasing of cure temperature, and the value of n is ~2 at the lower temperatures (<60°C) and decreases to ~1.5 as the temperature increases, and the addition of organo-montmorillonite decreases the apparent activation energy of the cure reaction before gelation point, but has no apparent effect on the apparent activation energy of the cure reaction after gelation point. There is no special curing process required for the formation of epoxy resin/organo-montmorillonite/diethylenetriamine intercalated nanocomposite.

montmorillonite Avrami equation nanocomposite cure diethylenetriamine epoxy resin gel time non-equilibrium thermodynamic fluctuation theory 

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Copyright information

© Kluwer Academic Publisher/Akadémiai Kiadó 2004

Authors and Affiliations

  • W. B. Xu
    • 1
  • Z. F. Zhou
    • 1
  • P. S. He
    • 1
  • W.-P. Pan
    • 2
  1. 1.Department of Polymer Science and EngineeringHefei University of Technology Hefei 230009AnhuiChina E-mail
  2. 2.Department of Chemistry, Materials Characterization CenterWestern Kentucky University Bowling GreenKYUSA

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