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热反射复合涂层的设计和性能研究.docx

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热反射复合涂层的设计和性能研究 【Introduction】 Withthewidespreaduseofenergy-savingandenvironmentallyfriendlytechnologies,thedevelopmentofnewthermalinsulationmaterialshasbecomeahottopicintheresearchfield.Inparticular,thestudyofthermalinsulationmaterialswithhighthermalreflectivityandlowthermalconductivityhasattractedmuchattentioninrecentyears.Inordertomeettheneedsoftheindustryandthemarketfornewthermalinsulationmaterials,thedesignandperformanceresearchofthermalreflectioncompositecoatingshavebecomeanimportantresearchdirection. 【Design】 Thedesignofthermalreflectioncompositecoatingsisbasedontheprincipleofradiationheattransfer.Byselectingappropriatethermalreflectorsandbinders,thethermalreflectioncompositecoatingswithhighthermalreflectivity,lowthermalconductivityandexcellentthermalinsulationpropertiescanbeobtained.Commonthermalreflectorsincludemetaloxides,metalsandnon-metals,amongwhichmetaloxidesarewidelyusedduetotheirhighthermalreflectivityandgoodstability.Thebinderactsasabondingmaterialbetweenthethermalreflectors,andalsohasacertainthermalinsulationeffect.Commonbindersincludesilanes,epoxies,andphenolics. 【Performance】 Theperformanceofthermalreflectioncompositecoatingsmainlyincludesthermalreflectivity,thermalconductivity,mechanicalpropertiesandstability.Thermalreflectivityisthemostimportantperformanceparameterofthermalreflectioncompositecoatings,whichdirectlyaffectsthethermalinsulationeffectofthecoating.Ingeneral,thermalreflectioncompositecoatingswithhighthermalreflectivitycaneffectivelyreduceheatloss.Thermalconductivityisanotherimportantperformanceparameter,whichdeterminestheabilityofthecoatingtoconductheat.Lowthermalconductivitycanensureexcellentthermalinsulationpropertiesofthecoating. Themechanicalpropertiesofthecoatingarealsoveryimportant,whichdeterminethedurabilityandservicelifeofthecoating.Thestabilityofthecoatingmainlyreferstoitsabilitytoresistharshconditionssuchashightemperature,UVradiationandweathering.Ahigh-performancethermalreflectioncompositecoatingshouldhaveexcellentmechanical