Abstract
As an electrically conducting filler, multiwall carbon nanotube (MWNT) with a great slenderness ratio was introduced into poly(vinylidene fluoride) (PVDF) to form the MWNT/PVDF nanocomposites. Dielectric properties of these composites before and after stretching were studied at wide frequency ranges from 102to107Hz. The results showed that the dielectric constant and conductivity after stretching were always lower than those before stretching. In the composites with high concentration of MWNT, the decreases in dielectric constant and conductivity were very significant. Rearrangement of MWNT in the composites along with the tensile-strain direction could be charge with the results of dielectric properties.
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