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Microwave dielectric properties of PTFE/rutile nanocomposites

Rajesh, S., Nisa, V. S., Nurali, K. P. and Ratheesh, R. 2009, Microwave dielectric properties of PTFE/rutile nanocomposites, Journal of alloys and compounds, vol. 477, no. 1-2, pp. 677-682, doi: 10.1016/j.jallcom.2008.10.092.

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Title Microwave dielectric properties of PTFE/rutile nanocomposites
Author(s) Rajesh, S.
Nisa, V. S.
Nurali, K. P.
Ratheesh, R.
Journal name Journal of alloys and compounds
Volume number 477
Issue number 1-2
Start page 677
End page 682
Publisher Elsevier B.V.
Place of publication Amsterdam, The Netherlands
Publication date 2009-05
ISSN 0925-8388
1873-4669
Keyword(s) composite materials
dielectric properties
PTFE
packaging
Summary The effects of nano-size rutile filler on the microwave dielectric properties of PTFE composites were investigated and the results were compared with that of micron size rutile filled composites. Nano-size rutile powder was prepared through sol–gel route and the filled PTFE composites were fabricated through SMECH process. Different characterization techniques such as powder X-ray diffraction, SEM, BET, TEM and TG/DSC were employed to analyze the nature of ceramic filler. The dielectric properties of filled composites were evaluated at microwave frequency region using waveguide cavity perturbation technique. Different theoretical models have been employed to predict the variation of dielectric constant with respect to filler loading. The moisture absorption characteristics of nano-rutile filled PTFE composites were measured as per IPC-TM-650 2.6.2 standards. Composites show high dielectric constant at X-band frequency region with relatively high loss tangent compared to micron size counterpart.
Language eng
DOI 10.1016/j.jallcom.2008.10.092
Field of Research 091209 Polymers and Plastics
Socio Economic Objective 870303 Polymeric Materials (e.g. Paints)
HERDC Research category C1.1 Refereed article in a scholarly journal
HERDC collection year 2009
Copyright notice ©2008, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30029279

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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