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Electrical resistivity behavior of mold‐cast metal‐filled polymer composites
Author(s) -
Yang Lei,
Schruben Dale L.
Publication year - 1994
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760341403
Subject(s) - materials science , composite material , electrical resistivity and conductivity , mold , composite number , percolation (cognitive psychology) , polymer , particle (ecology) , metal , electrical resistance and conductance , aluminium , electrode , methyl methacrylate , metallurgy , monomer , chemistry , neuroscience , oceanography , geology , electrical engineering , biology , engineering
Mold‐cast, metal‐filled composites made of poly(methyl methacrylate) and aluminum or nickel exhibited electrical resistance qualitative behavior as predicted by the percolation and tunneling mechanisms. A precipitous change in resistivity of about 10 4 ohm‐cm was found at volume concentrations of filler in the range of 18.5 to 19.8 vol%. Details of the electrode system are given for making these measurements. Using different polymers does not change the resistance behaviour of the composite to any great degree, suggesting that particle features of shape, size, arrangement, and so forth are the more important parameters. Such particle morphological details are indicated in the included photomicrographs.