DIELECTRIC BEHAVIOR OF NOVEL ACETYLENE BLACK–PVDF/BaTiO3TRI-PHASE COMPOSITE FILM

Qian Chen, Lu Jin, Wenjian Weng, Gaorong Han and Piyi Du ()
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Qian Chen: State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
Lu Jin: State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
Wenjian Weng: State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
Gaorong Han: State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
Piyi Du: State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China

Surface Review and Letters (SRL), 2008, vol. 15, issue 01n02, 19-22

Abstract: A novel three-phase film with conductive acetylene black (AB) and ferroelectric phase(BaTiO3)introduced intoβ-polyvinylidene fluoride (β-PVDF) was prepared by using dip-coating method. The high dielectric constant of 650 can be obtained in the AB–PVDF/BaTiO3composite film when AB content approached the percolation threshold (3.3 vol%), which is 40 times more than that of (PVDF +BaTiO3) matrix. The dielectric constant of the composite film is almost independent of frequency.

Keywords: Composites; PVDF; dielectric properties; percolation (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1142/S0218625X08010889

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