Polystyrene/Sr2Ce2Ti5O15 composites with low dielectric loss for microwave substrate applications

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Title:	Polystyrene/Sr2Ce2Ti5O15 composites with low dielectric loss for microwave substrate applications
Authors:	Subodh, G Deepu, V Mohanan, P Sebastian, M T
Keywords:	Polymer ceramic composites Barium titanate
Issue Date:	2009
Publisher:	Wiley
Citation:	Polymer Engineering and Science 49(6):1218-1224;Jun 2009
Abstract:	Sr2Ce2Ti5O15 (Strontium Cerium Titanate or SCT) ceramic was prepared by solid-state route. A composite of polystyrene/Sr2Ce2Ti5O15 was made using melt mixing technique in a Kneading machine. The microstructure of the composite was investigated using a Scanning Electron Microscope. The dielectric properties of the composites were studied at radio frequency and microwave frequencies. It is observed that relative permittivity and loss tangent increase with volume fraction of the ceramics. The mechanical properties of the composites were investigated using microhardness tester. For 50 volume percentage loading of the ceramic, the composite has relative permittivity of 13.6 and dielectric loss of 4.28 x 10(-4). The experimentally observed permittivity was compared with the theoretical models
URI:	http://ir.niist.res.in:8080/jspui/handle/123456789/812
ISSN:	0032-3888
Appears in Collections:	2009

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