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Curing of epoxy resins by dicyandiamide

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Summary

The reaction course, the final structure and the thermal behaviour of dicyandiamide cured epoxy resins were studied by HPLC, Carbon-13 NMR (liquid and solid state), IR, gel time determination, DSC and evolved gas analysis. N, N-dimethyl-benzylamine, imidazole and Monuron were applied as three different accelerator types. Dimethylformamide was used as solvent to obtain homogeneous reaction mixtures. Two reaction pathways depending on tautomeric dicyandiamide structures are suggested explaining the reaction mechanism.

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Authors and Affiliations

  1. Chemie und Fachbereich, Technische Hochschule Merseburg, Fachbereich, Geusaer Strasse, O-4200, Merseburg, Federal Republic of Germany

    A. Pfitzmann, K. Fryauf & M. Fedtke

  2. Physik, Technische Hoschschule Merseburg, Fachbereich, Geusaer Strasse, O-4200, Merseburg, Federal Republic of Germany

    A. Fischer

Authors
  1. A. Pfitzmann
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  2. A. Fischer
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  3. K. Fryauf
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  4. M. Fedtke
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Pfitzmann, A., Fischer, A., Fryauf, K. et al. Curing of epoxy resins by dicyandiamide. Polymer Bulletin 27, 557–564 (1992). https://doi.org/10.1007/BF00300604

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