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防护热板法高温导热系数测定仪关键技术研究.docx

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防护热板法高温导热系数测定仪关键技术研究 Title:KeyTechnologiesforResearchonHigh-temperatureThermalConductivityMeasurementofThermalProtectionPlate Abstract: Inrecentyears,thestudyofthermalprotectionsystemshasgarneredincreasingattentionduetotheever-growingdemandsforhigh-temperatureapplications.Themeasurementofthethermalconductivityofthermalprotectionmaterials,inparticular,playsacrucialroleinunderstandingtheirperformanceandimprovingtheirefficiency.Thispaperfocusesonthekeytechnologiesinvolvedintheresearchofhigh-temperaturethermalconductivitymeasurementofthermalprotectionplates,includingthedesignandconstructionofexperimentaldevices,selectionandfabricationoftestsamples,anddataanalysismethods. 1.Introduction: Thethermalconductivityofamaterialisanessentialpropertythatdeterminesitsabilitytotransferheat.Inhigh-temperatureapplications,suchasinaerospace,nuclearpower,andmetallurgyindustries,accuratemeasurementofthermalconductivitybecomesevenmorecritical.Thethermalprotectionplateisanessentialcomponentintheseindustriesduetoitsabilitytoprotectstructuralelementsfromhigh-temperatureenvironments.Therefore,understandingthefactorsthatinfluencethethermalconductivityofthethermalprotectionplateisvitalforensuringitseffectiveness. 2.ExperimentalDeviceDesign: Thedesignofanexperimentaldeviceforhigh-temperaturethermalconductivitymeasurementmustconsiderfactorssuchassamplesize,temperaturerange,andmeasurementaccuracy.Thedeviceshouldprovideacontrolledandhomogeneousheattransferenvironmenttoensureaccurateandreliableresults.Typically,asteady-stateortransienttechniqueisemployed,dependingonthedesiredmeasurementrange.Thedesignshouldalsoallowforsamplemounting,temperaturecontrol,andheatflowmeasurement.Additionally,thedeviceshouldminimizeheatlossesanduncertaintiesassociatedwithtemperaturemeasurements. 3.SampleSelectionandFabrication: Theselectionofanappropriatesampleforthermalconductivitymeasurementiscrucial.Thesamplemustpossessthenecessarythermalproperties,compatibilitywithhightemperatures,andthermalstability.Variousthermalpr