摘要
Compressedthinlayersofceramicfiberinsulationareusedashightemperatureinsulatinglayersaswellasmechanicalsupportforcatalystcoatedceramicmonolithsinautomotiveemissioncontroldevices.Minimizationofenergylosses,choiceofmaterialandthicknessofcompressedinsulatinglayerarebasedonknowledgeoftheirthermalphysicalproperties.Currently,consistentmeasurementsofmaterialsinacompressedstate,astheywouldbeinemissioncontrolapplications,areabsentduetotheabsenceofsuitablemethodsforsuchtests.Atestmethodwasdevelopedformeasurementofthethermalconductivityofcompressedthinfiberlayers.Thispapersummarizestheresultsofthermalconductivityanddiffusivitymeasurementsof27compressedfiberalumina-silica-vermiculitematerialsintherangeof200-950℃.Thermalphysicalpropertiesasafunctionoftemperature,density/mechanicalpressure,thicknessandcompositionofinsulatinglayersarepresented.Thewholesetofexperimentaldataisgeneralizedon3Dsurfaceplotsanddescribedbypolynomialfunctions.Thepossibleheattransfermechanismsgoverningapparentthermalconductivityofpressedinsulationlayersarediscussed.
出版日期
2016年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
