Study on dielectric behavior of a three-phase CF/(PVDF+BaTiO3) composite

被引：94

作者：

Dang, ZM ^{[1
]}

Fan, LZ ^{[1
]}

Shen, Y ^{[1
]}

Nan, CW ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 369卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/S0009-2614(02)01992-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A three-phase composite with a conductive carbon-fiber (CF) and ferroelectric phase (BaTiO3) embedded into polyvinylidene fluoride (PVDF) was prepared by using a simple blending and hot-molding technique. The dielectric properties of composites containing CF in (PVDF + BaTiO3) matrix as a function of the frequency and the volume fraction of CF were studied. The dielectric constant has a weak dependence on the frequency below 1 MHz and increases rapidly when the CF content is very close to the percolation threshold. The temperature has little effect on the variation of the dielectric constant. The percolation theory and the microstructure of the composites with CF are used to explain the experimental results. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：95 / 100

页数：6

共 32 条

[21] Novel polymer-ceramic nanocomposite based on high dielectric constant epoxy formula for embedded capacitor application [J].

Rao, Y ;

Ogitani, S ;

Kohl, P ;

Wong, CP .

JOURNAL OF APPLIED POLYMER SCIENCE, 2002, 83 (05) :1084-1090

[22] EXPERIMENTAL-STUDY OF THE 3-DIMENSIONAL AC CONDUCTIVITY AND DIELECTRIC-CONSTANT OF A CONDUCTOR-INSULATOR COMPOSITE NEAR THE PERCOLATION-THRESHOLD [J].

SONG, Y ;

NOH, TW ;

LEE, SI ;

GAINES, JR .

PHYSICAL REVIEW B, 1986, 33 (02) :904-908

[23] Influence of PANI-complex on the mechanical and electrical properties of carbon fiber reinforced polypropylene composites [J].

Taipalus, R ;

Harmia, T ;

Friedrich, K .

POLYMER COMPOSITES, 2000, 21 (03) :396-416

[24] Short fibre reinforced PP/PANI-complex blends and their mechanical and electrical properties [J].

Taipalus, R ;

Harmia, T ;

Friedrich, K .

APPLIED COMPOSITE MATERIALS, 1999, 6 (03) :167-184

[25] The electrical conductivity of carbon-fibre-reinforced polypropylene/polyaniline complex-blends: experimental characterisation and modelling [J].

Taipalus, R ;

Harmia, T ;

Zhang, MQ ;

Friedrich, K .

COMPOSITES SCIENCE AND TECHNOLOGY, 2001, 61 (06) :801-814

[26]

Tanaka K., 1994, Advanced Composite Materials, V4, P1, DOI 10.1163/156855194X00105

[27] Predicting the mesophases of copolymer-nanoparticle composites [J].

Thompson, RB ;

Ginzburg, VV ;

Matsen, MW ;

Balazs, AC .

SCIENCE, 2001, 292 (5526) :2469-2472

[28] SIMULATION OF PERCOLATION BEHAVIOR OF ANISOTROPIC SHORT-FIBER COMPOSITES WITH A CONTINUUM MODEL AND NONCUBIC CONTROL GEOMETRY [J].

WANG, SF ;

OGALE, AA .

COMPOSITES SCIENCE AND TECHNOLOGY, 1993, 46 (04) :389-398

[29] Microstructure and volume resistivity of composites of isotactic polypropylene reinforced with electrically conductive fibers [J].

Weber, M ;

Kamal, MR .

POLYMER COMPOSITES, 1997, 18 (06) :726-740

[30] Scaling behavior of the complex conductivity of graphite boron nitride percolation systems [J].

Wu, JJ ;

McLachlan, DS .

PHYSICAL REVIEW B, 1998, 58 (22) :14880-14887

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