This workreportstheinfluence ofporeformingagents,theirincorporationcontentandparticlesizedistributiononthebi-layeredceramics
porosity, mechanicalresistanceandthermalconductivity.
The resultsdemonstratethattheporositylevelonthebi-layeredceramicsbottomlayercanbeeasilycontrolledbytheporogenamount,while
porogen particlesizeaffectsboththenumberandsizedistributionofthepores.Twodifferentporeformingagentswereevaluated,namely
polypropylene (PP)andpolymethylmethacrylate(PMMA).Thenatureoftheporeformingagent,however,didnotaffectthebi-layeredceramics'
properties.
The incorporationofporosityintothebi-layeredceramicspromotesthermalconductivityattenuation(upto79%)incomparisonwith
conventional porcelainstonewareceramics,yetmaintainingsuitablemechanicalstrength.Thermalconductivitydecreaseisadjustableasa
function ofthevolumeandsizeofthegeneratedpores,thusenablingmaterialstobetailoredfortheenvisagedapplications.
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