Mechanical, thermal and microwave Dielectric Properties of Mg2SiO4 Filled Polyteterafluoroethylene Composites

Sasikala, T S; Sebastian, M T

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dc.contributor.author	Sasikala, T S
dc.contributor.author	Sebastian, M T
dc.date.accessioned	2017-05-25T06:40:32Z
dc.date.available	2017-05-25T06:40:32Z
dc.date.issued	2016-01-19
dc.identifier.citation	Ceramics International 42:7551-7563	en_US
dc.identifier.uri	http://hdl.handle.net/123456789/2813
dc.description.abstract	Polytetrafluroethylene (PTFE)–Mg2SiO4 composites havebeenpreparedusingbothmicronandnano-ceramic fillers byhotpressing.The dielectric propertiesofthecompositesareinvestigatedbothatradioandmicrowavefrequencyrangesasafunctionof filler loadingupto 50 vol%.Thedielectricconstantandlosstangentincreaseswith filler volumefraction.Thecompositewith50vol%micro-filler hasadielectric constant of3.2andlosstangent0.009at5GHzwithVickersmicrohardness16HV.Thesurfaceofceramicparticleswasmodified bysilane treatment. Thesurfacemodification reducedporosityandmoistureabsorptionandimprovedthemicrohardness.TheCTEofthecomposite decreased andthermalconductivityincreasedwith filler loading.NanopowdersofMg2SiO4 has alsobeenpreparedbysol–gel methodand composite hasbeenmadewithPTFE.Thenanocompositehashighermoistureabsorption,dielectricconstantandlosstangentbutlowerCTE value. ThePTFE–Mg2SiO4 composites arepossiblecandidateformicrowavesubstratesapplications	en_US
dc.language.iso	en	en_US
dc.publisher	Elsevier	en_US
dc.subject	Hotpressing	en_US
dc.subject	Composites	en_US
dc.subject	Microwavesubstrates	en_US
dc.subject	PTFE–ceramic	en_US
dc.subject	Forsterite	en_US
dc.title	Mechanical, thermal and microwave Dielectric Properties of Mg2SiO4 Filled Polyteterafluoroethylene Composites	en_US
dc.type	Article	en_US