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Mechanical, thermal, and electrical properties of metal fiber‐filled polymer composites
Author(s) -
Bigg Donald M.
Publication year - 1979
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.760191610
Subject(s) - materials science , composite material , composite number , ultimate tensile strength , metal , fiber , thermal , electrical conductor , aluminium , aspect ratio (aeronautics) , electrical resistivity and conductivity , thermal conductivity , polymer , physics , meteorology , electrical engineering , metallurgy , engineering
The critical concentration at which a metal‐filled composite becomes electrically conductive can be dramatically reduced by adding the metal as randomly dispersed fibers. The higher the aspect ratio of the fibers, the lower the concentration needed to induce electrical conductance. Composites exhibiting resistivities below 20 ohm‐cm have been produced with less than 8 volume percent aluminum fibers, having an aspect ratio of 24:1. At low fiber loadings the tensile strength of the composites is similar to that of the unfilled polymer. The thermal properties of these composites are shown to increase monotonically in accordance with the theoretical development of Nielsen.