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  • Composites of electrically conducting particles dispersed in non-conducting polymer matrix rank among new polymer materials with unique electrical properties. Recently a special attention has been paid to composites containing particles of conducting polymers as a filler, such as polypyrrole (PPy), polyaniline (PANI), etc., whose intrinsic conductivity can be controlled by chemical treatment. Below percolation threshold together with the DC conductivity also ?AC was close to a value of the silicone rubber matrix and its change with deformation of the composite was negligible. Consequently for maximum pressure loaded and unloaded sample the frequency dependences of ?AC merged. Above percolation threshold in contrast to #switching effect# of DC conductivity, the AC conductivity in the whole frequency range used at pressure deformation decreased only continuously.
  • Composites of electrically conducting particles dispersed in non-conducting polymer matrix rank among new polymer materials with unique electrical properties. Recently a special attention has been paid to composites containing particles of conducting polymers as a filler, such as polypyrrole (PPy), polyaniline (PANI), etc., whose intrinsic conductivity can be controlled by chemical treatment. Below percolation threshold together with the DC conductivity also ?AC was close to a value of the silicone rubber matrix and its change with deformation of the composite was negligible. Consequently for maximum pressure loaded and unloaded sample the frequency dependences of ?AC merged. Above percolation threshold in contrast to #switching effect# of DC conductivity, the AC conductivity in the whole frequency range used at pressure deformation decreased only continuously. (en)
  • Kompozity elektricky vodivých částic dispergovaných v nevodivé polymerní matrici patří mezi nové polymerní materiály s jedinečnými elektrickými vlastnostmi. Současně speciální pozornost byla věnována kompozitům obsahujícím částice vodivých polymerů jako plniv, takových jako polypyrol (PPy), polyanilín (PANI) aj. jejichž vnitřní vodivost může být kontrolována chemickou úpravou. Pod perkolačním prahem společně se stejnosměrnou vodivostí také střídavá vodivost byla blízko hodnotě silikonové elastomerní matrice a její změně s deformací kompozitů byla zanedbatelná. Následně sloučena pro maximální tlakové zatížení a odtížení vzorků frekvenčně závislých střídavých vodivostí. Nad perkolačním prahem i v porovnání se spínacím efektem,, stejnosměrné vodivosti, střídavá vodivost v celém frekvenčním rozsahu během tlakové deformace klesala jen nepřetržitě. (cs)
Title
  • Dielectric and conductive properties of silicone rubber/polypyrrole composites
  • Dielektrické a vodivé vlastnosti silikonových elastomerních kompozitů s polypyrolem (cs)
  • Dielectric and conductive properties of silicone rubber/polypyrrole composites (en)
skos:prefLabel
  • Dielectric and conductive properties of silicone rubber/polypyrrole composites
  • Dielektrické a vodivé vlastnosti silikonových elastomerních kompozitů s polypyrolem (cs)
  • Dielectric and conductive properties of silicone rubber/polypyrrole composites (en)
skos:notation
  • RIV/70883521:28110/06:63504671!RIV07-MSM-28110___
http://linked.open.../vavai/riv/strany
  • 269-270
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  • Z(MSM7088352101)
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  • 471567
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  • RIV/70883521:28110/06:63504671
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  • percolation threshold; pressure deformation; composites of electrically conducting particles; dielectric properties (en)
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  • [89A2C74A494F]
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  • Bratislava
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  • 20th Bratislava International Conference on Macromolecules , Book of Abstracts
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  • Sáha, Petr
  • Kazantseva, Natalia
  • Vilčáková, Jarmila
  • Omastová, Marie
http://linked.open...n/vavai/riv/zamer
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  • Ústav polymérov SAV
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  • 80-968433-3-8
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  • 28110
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