Effect of silver incorporation into PVDF-barium titanate composites for EMI shielding applications

被引：155

作者：

Joseph, Nina ^{[1
]}

Singh, Santosh Kumar ^{[2
]}

Sirugudu, Roopas Kiran ^{[2
]}

Murthy, Vemuri Rama Krishna ^{[2
]}

Ananthakumar, Solaiappan ^{[1
]}

Sebastian, Mailadil Thomas ^{[1
]}

机构：

[1] Natl Inst Interdisciplinary Sci & Technol, Mat Sci & Technol Div, Trivandrum 695019, Kerala, India

[2] Indian Inst Technol, Dept Phys, Madras 600012, Tamil Nadu, India

来源：

MATERIALS RESEARCH BULLETIN | 2013年 / 48卷 / 04期

关键词：

Ceramics; Composites; Metals; Polymers; Dielectric properties; MICROWAVE-ABSORPTION PROPERTIES;

D O I：

10.1016/j.materresbull.2012.11.115

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Composites of polyvinylidene fluoride (PVDF) with micron and nano sized BaTiO3 powders were developed for electromagnetic interference (EMI) shielding applications in the X band. PVDF-nano BaTiO3 composites show better shielding property compared to PVDF-micron sized BaTiO3 composites. The composite of PVDF with 40 vol% of nano BaTiO3 showed the best EMI shielding effectiveness and is about 9 dB. The contributions from reflection and absorption to the total EMI shielding effectiveness is same for the PVDF-BaTiO3 composites. Addition of small amount of silver particles improved the shielding properties of these composites due to the increased conductivity. An EMI shielding effectiveness of about 26 dB is obtained in the measured frequency range for the PVDF-20 vol% nano BaTiO3-10 vol% Ag composite of thickness 1.2 mm. Novel three phase composite combining the advantages of metal, nano ceramic and polymer is obtained with the potential for effective EMI shielding applications. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1681 / 1687

页数：7

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