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Percolation in carbon black filled epoxy resin
Author(s) -
Schueler Ruediger,
Petermann Juergen,
Schulte Karl,
Wentzel HansPeter
Publication year - 1996
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19961040122
Subject(s) - percolation threshold , agglomerate , carbon black , materials science , composite material , epoxy , percolation (cognitive psychology) , volume fraction , particle (ecology) , fractal dimension , fractal , electrical resistivity and conductivity , mathematics , physics , mathematical analysis , oceanography , natural rubber , quantum mechanics , neuroscience , geology , biology
The conditions to form a conductive network in carbon black filled epoxy resin were examined. It was found that the formation is controlled by particle‐particle interaction which can be influenced by shear forces or by the ionic concentration of the resin. Therefore the network morphology and thus the percolation threshold depends strongly upon the processing route. On best conditions the percolation threshold was reduced to 0.06 vol.‐%. That a continuous network can form with such a low volume fraction can be explained by the fractal dimension of agglomerates the network is made of.