Extraordinary synergy in the thermal and electric properties of polymer matrix reinforced with hybrid fillers
| Autor: | Ludmila Vovchenko, Ludmila Matzui, Alexander Zhuravkov, A. V. Trukhanov, Oleksandra Lazarenko, Yulia Perets |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
02 engineering and technology Carbon nanotube Dielectric 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound Thermal conductivity Electrical resistance and conductance law Electrical resistivity and conductivity General Materials Science Graphite Composite material Mechanical Engineering Epoxy 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences chemistry Mechanics of Materials Boron nitride visual_art visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Materialwissenschaft und Werkstofftechnik. 47:278-287 |
| ISSN: | 0933-5137 |
| DOI: | 10.1002/mawe.201600493 |
| Popis: | The effect of the incorporation of different combinations of electric conducting and non-conducting nanofillers into epoxy resin on the thermal and electric conductivity was studied. Graphite nanoplatelets (GNPs), multi-wall carbon nanotubes (MWCNTs) and carbon fibers (CFs) were used as the conductive fillers. The non-conductive ones were boron nitride (BN) or barium hexaferrite (BaFe12O19). The content of nanocarbon in composite materials (CMs) was varied from 1.0 to 6.0 vol%, the content of dielectric filler in composite materials was equal to 15.0 vol% boron nitride and 8.0 vol% BaFe12O19, respectively. The combination of electroconductive nanocarbon and non-conductive boron nitride particles showed an increase of the thermal conductivity (by a factor of 2 for hybrid composite materials boron nitride/graphite nanoplatelet/epoxy (4.5 vol% of nanocarbon) compared to the thermal conductivity of composite materials with single graphite nanoplatelets filler) and the electric conductivity, whereas the hybrid conductive fillers of various morphology (graphite nanoplatelets/carbon nanotubes or graphite nanoplatelets/carbon fibers) did not show an improvement. On the other hand, the use of graphite nanoplatelets/carbon nanotubes and graphite nanoplatelets/carbon fibers hybrid fillers lead to the anisotropy of the electric conductivity and a reversible change of the electric resistance after a compression up to 50 MPa due to improved elastic properties. |
| Databáze: | OpenAIRE |
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