TITLE

BaTiO3-carbon nanotube/polyvinylidene fluoride three-phase composites with high dielectric constant and low dielectric loss

AUTHOR(S)
Yao, Sheng-Hong; Dang, Zhi-Min; Jiang, Mei-Juan; Bai, JinBo
PUB. DATE
November 2008
SOURCE
Applied Physics Letters;11/3/2008, Vol. 93 Issue 18, p182905
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A three-phase composite with multiwall carbon nanotube (MWNT) and BaTiO3 particles embedded into polyvinylidene fluoride (PVDF) was prepared. The uniform dispersion of fillers was realized, and the dielectric constant was as high as 151 at 102 Hz when the volume fraction of MWNT and BaTiO3 were 0.01 and 0.15, respectively. The BaTiO3-MWNT/PVDF composite with high dielectric constant displayed relatively low dielectric loss and good flexibility due to the low concentrations of MWNT and BaTiO3. The results can be explained by the space charge polarization at the interfaces between the conductor and the insulator and the evolutions of conductive pathway and microcapacitance structure.
ACCESSION #
35279193

 

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