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1、LA-UR-18-28628Approvedforpublicrelease;distributionisunlimited.Title:CharacterizationofVariousMaterialsUsingRefractometryAuthor(s):Yang,DaliYang,MichelleH.Edgar,AlexanderStevenIntendedfor:ReportIssued:2018-09-11Disclaimer:LosAlamosNationalLaboratory,a
2、naffirmativeaction/equalopportunityemployer,isoperatedbytheLosAlamosNationalSecurity,LLCfortheNationalNuclearSecurityAdministrationoftheU.S.DepartmentofEnergyundercontractDE-AC52-06NA25396.Byapprovingthisarticle,thepublisherrecognizesthattheU.S.Govern
3、mentretainsnonexclusive,royalty-freelicensetopublishorreproducethepublishedformofthiscontribution,ortoallowotherstodoso,forU.S.Governmentpurposes.LosAlamosNationalLaboratoryrequeststhatthepublisheridentifythisarticleasworkperformedundertheauspicesofth
4、eU.S.DepartmentofEnergy.LosAlamosNationalLaboratorystronglysupportsacademicfreedomandaresearcher'srighttopublish;asaninstitution,however,theLaboratorydoesnotendorsetheviewpointofapublicationorguaranteeitstechnicalcorrectness.CharacterizationofVariousM
5、aterialsUsingRefractometry*DaliYang,MichelleYang,andAlexanderEdgarMST-7,EngineeredMaterialsLosAlamosNationalLaboratory,LosAlamos,NewMexico,USA87547Abstract:Refractiveindex(RI)isafundamentalphysicalpropertyofamaterial.However,theRIvaluesofseveralbinder
6、s,includingnitroplasticizer(NP),Estanes,andKelF/FK800,arenotavailableinliterature.Further,theirtemperaturedependenciesareundocumentedeither.Inthisstudy,wehavedevelopedasetofmethodologiestoaccuratelyandeffectivelydeterminetheRIsofthesebindermaterialsbe
7、tween20and70°C.TheRIsofthesebinderswithoutagingshowlinearcorrelationswithtemperature,asshowninthefigurebelow.Amongthesematerials,Estane5714hasthehighestRIwhereasFK800hasthelowestRI.Asmaterialsage,thechangesintheirRIsaredifferent,suggestingdifferentagi
8、ngbehaviorofthesebindersuponheating.Typically,NPandEstanedegradedthroughhydrolysisgivelowerRIsthanthebaselinematerials.However,whenKelF/FK800materialsthermallyage,theirRIsincrease.Overall,thisstudydemonstratesData110:13:08PM8/23/18refractometr
