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http://localhost:8080/xmlui/handle/123456789/2813| Title: | Mechanical, thermal and microwave Dielectric Properties of Mg2SiO4 Filled Polyteterafluoroethylene Composites |
| Authors: | Sasikala, T S Sebastian, M T |
| Keywords: | Hotpressing Composites Microwavesubstrates PTFE–ceramic Forsterite |
| Issue Date: | 19-Jan-2016 |
| Publisher: | Elsevier |
| Citation: | Ceramics International 42:7551-7563 |
| 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 |
| URI: | http://hdl.handle.net/123456789/2813 |
| Appears in Collections: | 2016 |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| mechanical thermal -sasikala-ceramic international.pdf Restricted Access | 2.94 MB | Adobe PDF | View/Open Request a copy |
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