Paper number 1173
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ELECTRICALLY CONDUCTIVE COMPOSITE : INFLUENCE OF POLYPYRROLE PARTICLES ON DYNAMIC MECHANICAL CHARACTERISTICS OF AN EPOXY MATRIX |
Philippe Olivier1, Caroline Cassignol2, Bruno Medda3
1 Laboratoire de Génie Mécanique de Toulouse, IUT Paul Sabatier, Dept. GMP,
50 Chemin des maraîchers 31077 Toulouse cedex 4 France
2 Laboratoire des Procédés de Polymérisation
ENSIGC, INPT, 18 Chemin de la loge 31078 Toulouse cedex 4 France
3 Aérospatiale, A/BTE/CD/MP, 316 Rte. de Bayonne
31060 Toulouse cedex 3 France
| Summary | Having in mind to produce electrically conductive carbon/epoxy composites, we have filled an insulating epoxy matrix with an electronic polymer, polypyrrole (PPy). In a previous work the characterization of epoxy/PPy particulate composites showed that the percolation threshold can be reached for PPy particles volume fraction of about 8.1%. We are now focusing our work on the dynamic mechanical behavior of particulate composites with PPy particles volume fraction laying between 0 and 14.1%. This study shows that the behavior of these composites exhibits a singularity when PPy particle volume fraction reaches 6.8%. A first analysis of this singularity has been carried out. |
Keywords | electrically conductive composites, percolation threshold, dynamic mechanical properties, polypyrrole, particulate filled composites. |