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Preparation of Binary Conductive Polymer Composites with Very Low Percolation Threshold by Latex Blending
Author(s) -
Hu Ji Wen,
Li Ming Wei,
Zhang Ming Qiu,
Xiao Ding Shu,
Cheng Gen Shui,
Rong Min Zhi
Publication year - 2003
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200300014
Subject(s) - materials science , composite material , percolation threshold , carbon black , ultimate tensile strength , polyurethane , percolation (cognitive psychology) , polymer , conductivity , electrical resistivity and conductivity , natural rubber , chemistry , biology , engineering , neuroscience , electrical engineering
The communication reports a way to prepare carbon black (CB)/waterborne polyurethane conducting composites with percolation thresholds as low as 0.2 vol.‐% through conventional latex blending. CB particles in the composites appear segregated in their distribution and are located in the two‐dimensional interstices among the polymer domains. The intimate filler/matrix interaction also improves the tensile strength of the matrix at the CB content corresponding to the electrical percolation threshold.Room temperature conductivity, σ , and tensile strength as a function of carbon black (CB) concentration of the waterborne‐polyurethane‐based composites prepared by latex blending.