A New Microwave Ceramic – Polymer Composite with 0-3 Connectivity

Archives of Metallurgy and Materials

J. Micior¹  A. Lisińska-Czekaj¹  D. Czekaj¹ 

[1] UNIVERSITY OF SILESIA, DEPARTMENT OF MATERIALS SCIENCE, 2 SNIEZNA STR., 41-200 SOSNOWIEC, POLAND

关键词: Keywords: BiNbO4;    microwave ceramics;    PVDF;    ceramic-polymer composite;    0-3 connectivity;    dielectric properties;   

DOI  :  10.2478/amm-2014-0037

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Goal of the present research was to fabricate and study two-phase BiNbO4//PVDF composites with 0-3 connectivity. Such composite consists of there-dimensionally connected polymer matrix loaded with dielectric ceramic particles. In the present case BiNbO4 powder acted as an active phase (dispersed phase) whereas polyvinylidene fluoride (PVDF) acted as a non-active (passive) phase (matrix). BiNbO4//PVDF composites with the volume fraction of the ceramic phase cν =2, 4, 6, 8, 10, 16 and 20 vol. % were prepared. Average grain size of BiNbO4 powder was =1.86 μm. It was found that BiNbO4 powder exhibited orthorhombic symmetry with Pnna (52) space group and PVDF polymer powder was α-phase. Minimum of dielectric losses at room temperature were found within the frequency range Δν =103-104 Hz. It was found that composite with cν =10% of ceramic powder exhibited lower values of dielectric permittivity.

【 授权许可】

Unknown