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首页 色差仪分析原理(Analysis principle of colorimeter)

色差仪分析原理(Analysis principle of colorimeter).doc

色差仪分析原理(Analysis principle of c…

zhou王燕
2018-04-01 0人阅读 举报 0 0 0 暂无简介

简介:本文档为《色差仪分析原理(Analysis principle of colorimeter)doc》,可适用于社会民生领域

色差仪分析原理(Analysisprincipleofcolorimeter)色差仪分析原理(Analysisprincipleofcolorimeter)In,CIEestablishedaseriesofcolorspacestandardsforvisiblespectrumThebasicCIEcolorspacestandardisCIEXYZ,whichisbasedonthevisualabilityofthestandardobserverthatis,itreflectsthestandardrangeofthevisiblecolorofthehumaneyeBasedonCIEXYZ,thereareCIExyY,CIELab,CIELchandotherstandardcolorspaceCIELabcolorspaceisthemostcommonlyusedintheindustryCIELabcolorspacetoLcolorvalue,avalueofaindicatesthecolorredandbvaluethatthecoloroftheblueandyellowvalueIfonlytojudgewhetheracolorisnotmuchpracticalsignificancetoagroupofLabvalue,butwhenwecomparetwocolors,wecanLabthedifferenceoftwocolorstodeterminethedifferencebetweenthemForexample:thestandardcolorsampleLabforacustomertoprovideuswithavalueof,Labandwefinishedmeasuringtheactualproductionvalueis,thecalculationoftheLabvaluewere,soweknowthattheLvalueoftheproductishigherthanthestandardpartiallight,avalueishigherthanthestandardorpartialred,belowBthestandardisblue,bycomparingthestandardcoloter"isdividedinto"degree"and"ddegreeintegrationsphere"twomeasurementobservationway:"degrees"canonlybeusedtosmoothsurface,andcannotbeusedforcomputercolormatching"Ddegreeintegratingsphere"canbeusedtomeasurevarioussurfacesforcomputercolormatchingThedifferenceofallkindsof"ddegreeintegratingsphere"colormeasuringinstrument:Mostcompanieschoose"ddegreeintegrationball"colormeasuringinstrument,butitmustbenotedthatthereisstillabigdifferencebetweendifferentbrandsanddifferentmodels,leadingtodifferentmeasurementaccuracyAcolormeasurementinstrumentinadditiontothemicroprocessorandrelevantcircuit,therearefourmajorparts:lightsource,integralball,grating(spectrophotometricdetector)andphotoelectricdetectorThisisalsoameasureoftheadvantagesanddisadvantagesofaninstrumentofthemainindicatorsisittheprincipleofdoublebeammeasurementortheprincipleofsinglebeammeasurement":ThedualbeaminstrumenthastwogratingsandtwodetectorsMeasuringtimesourceflashesonlyonce,ThesamesampleandreferencewhitewerealsomeasuredThisovercomestheerrorscausedbythesystemchanges,andtheaccuracyofthemeasurementdataisveryhighOnlytheinstrumentcostishigherAsinglebeaminstrumenthasonlyonegratingandonedetectorSothetimesourceflashwasmeasuredtwotimes,andthesampleandreferencewhiteweremeasuredrespectivelyThesystemerror(lightintensitydistributiondifference,lightpathchange,temperaturechange,circuitdrift,etc)ofthetwomeasurementisregardedasthedifferencebetweenthesampleandreferencewhite,sotheerrorisrelativelylargelightsource:mostmanufacturerschoose"PulsedXenon",whichhastheadvantagesoflonglife,highlightintensity,highsignaltonoiseratio(measurementsignalnoise),highmeasurementaccuracyandsoonThetungstenlightisselectedbysomemanufacturers,whichhasthedisadvantagesoflowlightintensity,longtermfever,shortlifeandinaccuratemeasurementinthebluelightsectionintegralball:goodquality,yearswillnotturnyellow,poor,yearstochangeyellowtoreplace,JapanMINOLTA(MeiNengda)colormeasurementinstrumentproducedbythecompanyisdividedintotwoseries:CRseries(CR,CR,CR,CR,CR,CR)thetwoistheCMseries(CMd,CMd,CMd,CMd,CMcetc)CRseriescanonlymeasurecolor,butnotcolormatching,andCMseriescannotonlytestcolor,butalsocanbeconnectedwiththecolormatchingsystemforcolormatchingToestablishacolormatchingsystemmusthavethefollowinginstruments:)CMseriesspectrophotometer,)colormatchingsoftware,)selfownedcomputerThesamecolormeasuringinstrument,buttheCMseriesthantheCRseriesmeasurementaccuracyishigh,thepriceishighCRseriesofportableCRanddesktopCRxxdifference:theabsolutevalueofCRcannotmeasurethecolorspaceofacolor,canonlymeasurethecolordifferencebetweenthetwocolorvalue(E)theabsolutevalueofCRxxdesktopcolordifferencemetercanmeasurethecolorspaceofacertaincolorIntheCRseries,fordifferentindustries,therearedifferentmodels(mainlymeasurementdifferences),theusermustbeundertheguidanceofoursalesengineertochoosetheappropriatemodelWhatisthecolormatchingmethodWhatisthecolormatchingmethodWhatcanmatchwhatcolor,helpmeseeThevarietyofcolorvariesendlesslyandgorgeous,buttherearesomeinternalrelationsbetweendifferentcolors,eachkindofcolorColorcanbedeterminedbyparameters,namelyhue,lightnessandsaturationHueisthecolorthatdistinguisheseachotherItdependsonthechromatographiccompositionofthelightsourceandtheperceptionofthehumaneyecausedbythewavelengthsemittedfromtheobjectsurfaceRed,yellow,green,blue,purpleandothercharacteristicsLightness,alsoknownasbrightness,istherepresentationofchangesinthebrightnessoftheobjectsurfaceBycomparingthebrightnessofvariouscolors,thecolorhasthedistinctionbetweenMinganddarkSaturation,alsoknownascolorDegreeoffeaturerepresentationofobjectsurfacecolorshadingvalue,colorisbrightanddarkdonHue,lightnessandharmonySaturationmakesupasolid,andwiththesethreescales,wecanmeasurecolorswithnumbersThecolorofnatureischangeable,butthemostbasicisred,yellow,blue,threekinds,calledprimarycolorsTakethesethreekindsAnothercolor,whichismadeupofdifferentcolors,iscalledcompoundcolor,andthecolormatchingofcolorisshowninFigureRelationForexample,redyellow=orangeblueyellow=greenorangeandgreenarecalledcomplexcolorsFigureshowsthecolormatchingcolorofthefaceColorring,colorcolormosaic,anothercolorinthecolorcirclecorrespondingtothecomplementaryForexample,yellowandblueMakegreen,thecorrespondingredisgreencolorInthecolormatching,addingwhitetodilutetheprimarycolororcompoundcolorcangetdifferentcolorsofsaturationDifferentcomponentsoftheblack,youcanget"Brightness"differentcolorsThiswilladdcolortint,OrevengrayorblackTherelationshipbetweencolor,colorandcolor,seetableTablecolor,coloranditscomplementarycolorColorcolorcolorRedandyellowBlueandyellowHuangyuhongPurpleandgreenGreenandorangeOrangeandpurplegreenorangeolivelemonReddishbrownyellowredblueorangePurpleandredgreenInforeigncoatingsandcoatingsindustry,colorisdividedintotwocategories:metallicflashcolorandnaturalcolorThepaintfilmoftheformerisinJapanLightshiningcanhaveabrightsenseofflash,usuallyinthecoatingwithaluminumpowder,copperpowderorpearlescentpigment,socalledMetalflashcolor,widelyusedinautomotive,electricalandotherindustriesInadditiontothemetallicflashcolor,calledthetruecolor,thefunctionofcolorReasonablecolorarrangementplaysanimportantroleincreatingcomfortablejobs,workingandlivingenvironmentColortuningFestivalscanmaketheenvironmentbrighter,relieveeyeandbodyfatigue,increaseworkpleasure,andimprovelaborefficiencyCreateaspecificenvironment,reflectacertainstyleandemotionalappealreduceaccidentsanddisasters,improvethequalityofworkStrengthenthecareofmaterialpsychologyandsoonReflectedintheinteriorarchitecture,Dangtuinstalledwarmpaint,suchasred,orange,yellowseries,reminiscentoftooAwarmandwarmfeelingcausedbyYangandfireCoatings,suchasgreen,blue,andviolet,thatpaintcoldtonesPeoplefeelcool,asiftheywereinagreenenvironmentWhenthelowerdegreeofcolour,avoidcolorItcanpreventtheeyeandthewholebodyfrombeingtiredwhenthecolorofthelightisclosetothenaturallightLoColoriscloselyrelatedtosecurity,andmanycolorshavebecomeauniversallanguageRed,yesStrongstimuluscolor,alsocalledexcitationcolor,isoftenusedasasignofdangerYellow,iseyecatchingcolor,intrafficmanagementUseaswarningBlueiscool,coolandcool,andusedasamanagementdeviceinindustrySignofpreparationGreen,isthebackgroundcolor,thepsychologicalstimulationofthepeople,noteasytoproducevisualfatigue,tothepeopleInsafetysense,itisusedassafetycolorinindustryOthercolors,alsohaveawiderangeofapplications,especiallywhite,withThesubtractiveeffect,reducetheintensityofthecolor,addingwhitetosolveTwo,thedeterminationandevaluationofcolorForthedeterminationandevaluationofpaintfilmcolor,thenationalstandardGBTspecifiesthecolorstandardofpaintfilm,GBTspecifiesthecolorofthepaintfilm,andGBTspecifiesthecoloursandvarnishesThecolorimetricmethod,GSBTGprovidesastandardcolorcardforthecolorofthepaintfilm,colorstandardToestablishscaleforthreecolors,hue,lightness,andsaturation,wecanmeasurethecolorwithnumbersColorIn,AmericanpainterAHMunsellinventedatypespheremodel,thethreeparametercharacterizationofcolorThenumbersareallexpressed,andeachpartofthesolidmodelrepresentsaparticularcolor,whichiswidelyusedinternationallyPanusingtheMunsellcolorsystem,asamethodofclassificationandcalibrationofsurfacecolor,therepresentationmethodforHVC,HTablehue(Hue),Vrepresentslightness(value),Crepresentssaturation(Chroma)OthersarerepresentedbynumbersThecolormethodwasdevelopedbytheInternationalCommitteeofillumination(CIE),inwhichthetwofamousmethodsareYXYcolorSpacemethodandL*a*b*colorspacemethodTheformerwasinventedinaccordingtoCIE'sthreestimulusvalue,XYZ,ThelatterwasinventedintogiveamoreuniformcolordifferenceinrelativeparallaxThesethreecolorsystemshavesomeConversionrelationAtpresent,thefilmcolorisbasedonMunsellcolorcoordinatesystemrequiredinthecoatingindustry,GBTcolorstandardincludesthecolorofthemaincolorproductswhichareoftenproducedandusedatpresentItismadeupofcolors,Paintfilmcolorstandardcard(colorcard)inphysicalseeGSBGThefullnameofcolorstandardisexpressedbynumberplusname,NumberingconsistsofoneortwocapitalizedEnglishlettersandtwoArabiadigitsEnglishlettersareusedtoindicatetoneTable)theArabianumbersareusedtodistinguishthecolorsofthesamehueThenameofthecolorstandardusesthecustomarynameForexample,red,yellow,green,darkgrayishetcTableliststhecolorstandardsforcommonlyusedcoatingsNumber,name,andcolorordercorrespondingtoGBTandtheordernumberofGSBGThecolorofpaintfilmisdividedintotentypesaccordingtotheirmaincolors,andelevencategoriesareaddedwithoutcolor,suchastable,colorPaintfilmindicating:HVCnocolorexpression:NVTableclassificationandsymbolofhueColorred,HuangHong,yellowgreen,yellowgreen,bluegreenBlue,purple,purple,purplewithoutcolorSymbolRYRYGYGBGBPBPRPNMunsellsystemthreeattributesymbolmeaning:ThehuesymbolisH,indicatingtheobjectisred,yellow,green,blue,purpleorintermediatecolor,oneofthethreeattributesofcolorThearrangementoffigures,suchasFigure,isrepresentedbynumbersandlettersThelightnesssymbolisV,whichrepresentsoneofthethreeattributesofthecolorthatreflectsthelightofanobjectTheblackofreasonis,Thedifferenceoflightnessbetweenand~isdividedbyequaldegreeThesymbolforCsaturation,chroma,colordeviationwiththesamedegreeofgreySaturationcanbedividedFromto,generallylessthanisnocolorsaturationTablename,commonlyusedpaintcolorlabelandthecorrespondingnationalstandardMunsellcolornumberThecolorofthecorrespondingMunsellcolorlabelHVC(huelightnesschroma)correspondingtoGBTThecolornumbercorrespondstotheordernumberofthecolorarrangementofGSBGblackwhitebrownThegrayseaDarkgreyEggwhiteRedivoryPearlRoseredOrangePurpleSkybluePalebluemediumgreenGreenashDarkgreenGrayishCardamomgreenSilvergreyBrightredMedium(phthalocyanine)blueYellowLightgreenYellowOrangeColortoneringWhenjudgingthecolorofthepaintfilmwithnakedeyes,manyexternalconditionsaffectustolookatthecolorSometimesobserver'sThemoodisdifferent,willhavedifferentjudgmenttothecolorTherefore,thetestplatemustbemadeinthedetermination,Lightsourceandotherconditions()thedifferenceoflightsource,inthesunlight,fluorescentlamp,tungstenfilamentlampandotherlightsource,eachkindoflightingmakethesameTheobjecttobemeasuredlooksdifferentTherefore,thenationalstandardGBdoesthevisualcolorimetricevaluationofthecoloredpaintDetailedregulationsaregivenForcolorimetricwork,naturallightorartificialdaylightcanbeusedNaturallightisthenorthernlightofsomeclouds,Lightfromsunrisetosunsetinhours,hoursbeforetheBeikonglight,illuminationuniformity,theilluminationisnotlessthanlxArtificialsunlight,usingCIEstandardlightingbodyDspectrumenergydistributionsimilartoourlightsourceThecolorimetricpositionofthecolorimetricboxshouldbeintherangeoftolx,andthestandardofthecolorboxshouldbeinaccordancewithGBTregulationsFordarkpaint,thecolor,theilluminationshouldbebigger()thedifferencebetweentheeyesoftheobserver,thesensitivityofthefirsteyeisalwaysslightlydifferent,andeventhinkcolorvisionisnormalPeoplemaystillbebiasedtowardsredorblueasageincreases,visionwillalsochangeBecauseofthesefactors,ThesamecolorisdifferentfordifferentpeopleTherefore,theinstrumentcolorimetricevaluationshouldbeusedasmuchaspossibleWhenvisualIncomparison,theobserver'srequirementisthattheobservermustbetakenbythepersonwithnovisualimpairment,iftheobserverWearingglasses,lensesmusthaveuniformspectraltransmittancethroughoutthevisiblespectruminordertoavoideyefatigue,intheeyeTohaveastrongcolorincolor,lightandcolordonotimmediatelymodelmodelcolorinhighbrightcolorIfyoucan'tmakeaquickjudgementwhenthecoloriscolorimetric,theobservershouldtakeafewminutesoftheneutralgraynearitColorimetriciftheobservercarriesonthecontinuouscolorcomparison,WeshouldrestregularlyforafewminutestoensurethequalityofthevisualcolorDon'tlookatcoloredobjectsduringtherestperiod()thedifferenceinsize,aftersomeonecheckedthesmallpiecesofwallpaper,chosewhathethoughtwasagoodoneKindof,butwhenthewallpaperisattachedtothewall,itfeelstoobrightCoveringalargerareaofcolorthancoveringafacetTheproductlooksbrighterandbrighter,whichiscalledtheareaeffectThechoiceoflargeobjectsisbasedonsmallonesThecoloroftheareamakesmistakesInthevisualcolorimetric,thetestboardandreferencestandardboardshouldbeflat,rulerInchshouldnotbelessthanmm*mmThetestboardshallbepreprocessedaccordingtoGBandagreedoragreedtoinaccordancewithGBMethodofpaintingThetestplateshouldbedryenoughandthefilmthicknessshouldbeconsistentwiththestandardplate()thedifferencebetweenthebackgroundandtheobjectbeforethebrightbackgroundismoreobviousthanbeforethedarkbackgroundIt'sgloomy,whichiscalledcontrasteffectIt'snotgoodtojudgecolorsaccuratelyDoingvisualworkWhencolorimetric,theobserver'sjudgmentisalsosusceptibletothesurroundingcolorobjectsTherefore,theclotheswornbytheobservershouldbethesameastheclothesusedbytheobserverNeutralcolorInthefieldofview,noothercolorobjectexistsexceptthetestpanelThereshouldbenocolorwhenusinglightsourceThecolorofobjects(suchasred,greenlightetc)()thedifferenceindirection,whenweobserveanobjectfromtwoslightlydifferentangles,onthemeasuredobjectApointseemstobelightandshade,whichiswhythepainthasdirectionalpropertiesSomekindofcoloredmaterial,especiallygoldCoatingshavestrongdirectionalpropertiesThedistancebetweentheeyesandthesampleisdeterminedbythestatewhenthevisualcolorimetricismademm,whenobservingundernaturallight,itisnecessarytoobservethetestplateinonedirection,suchasneartherightangleObservationInthecolorimetricbox,thelightisobservedatzerodegreeangle,andthehumaneyeisobservedatdegreeangle,thedeterminationofcolorTherearetwokindsofcolordetermination,oneistheuseofinstrumentforcolorimetric,andtheotheristhevisualcolorimetricmethodAtpresent,ChinaTheinspectionofpaintcolorismostlydonebyvisualinspection,whichisstipulatedinthesameexperimentalconditions(includingstrictlyaccordingtotheabove)Aparallelcomparisonismadebetweentherules,thetestboard,theselectionofthelightsource,thebackground,theangleandtheobserver,etcSpecificoperationssuchasUndertheThetestplateisplacedsidebysidewiththereferenceplatetomakethecorrespondingedgescontactoroverlapeachotherThedistancefromtheeyetothesampleItisaboutmmInordertoimprovethecolorimetricaccuracy,thepositionofthetestplateshouldbeinterchangedatanytimeColordifferenceratingisdividedinto:near,grades,like,slightly,andsoonThedifferenceincolordifferenceisconsideredtobequalified,requiringusersandmanufacturersortoningagentsSelfformulated,generallyforhighgradecars,furniturecolorrequirementsareverystrictinalargeareaofpainting,therequirementsWithinthescopeoftheconstructionofthesamespecies,withoutthenakedeyecolordifferencecoating,especiallyintherepairprocess,thecolorslightlyThedifferencewillaffecttheoveralleffect,cannotproduce"patch"errorThismethodofvisualinspection,ifthecolordifferenceisnothighinthecaseissimple,alsodoesnotneedhowmuchtheoryInfrastructureandspecialfacilitiesButifwewanttobeprecise,weneedtohaveacertainobservationconditionandhavecertainchromaticityknowledgeObserverdetectionandobserverexperiencedirectlyaffecttheaccuracyofthetestresultsUndernormalcircumstances,meatonlyAlthoughtheeyeobservationisquiteacute,therearestillsomelimitationsInternationalcolorevaluationgenerallyusecolorcolorDifferentialmeterAmoreaccuratecolordifferencemetercanimmediatelymakethecolorquantizationsimpleandeasytoobtain,inavarietyofcolorspacetableShowthemeasurementresultsandusetheinternationalstandardtoexpressthecolorBecausethecolorimeteralwaysusesthesamelightsourceandilluminationThemethodtomeasure,determinationconditionsarealwaysthesame,nomatterinthedaytimeoratnight,indoororoutdoor,notdopingTheindividualfactoroftheobserverisalwaysquantizedandaccurateColorcolorimeterisgoodatrevealingsubtlecolorsChange,usenumericalvaluetorepresentcolordifference,easytomixcolorandsavedataCommonlyusedcolorimeterathomeandabroadisMINOLTA(MeiNengda)CRseriescolorcolorimeter,CMseriesspectrophotometerBYKGaednerPlusSonora)CompanyCGseriescolorspectrometerandXRite(x)SPseriescolorinstrumentcompanyThree,coloradjustmentandcoatingtintingskillsAllkindsofmonochromepaint(alsoknownasprimarypaint)varieties,althoughquitealot,butstillfarfrommeetingtheneedsofpeopleTothis,itrequiresthepainterinpracticalwork,theuseofexistingprimarycolorspaintmorebeautifulcolors,InordertomeettheneedsofusersinmanyaspectsColormatchingisacomplicatedandmeticulousjob,becausetherearesomanycolorsthatyouneedtoknowallkindsofpigmentsTheperformancealsoneedstojudgethecolordifferenceaccuratelyInforeigndevelopedcountries,colormatchingistheuseofcolormeasurementandcolormatchingTheinstrumentandcomputerprogramareusedtoanalyzethecolorandformationofthesampleswatchesbyphotoelectricspectrophotometerorspectrophotometerTomeasurethecolorindigitalform,inputitintothecolormatchingandcolormatchingsoftwareprogramandcalculatethecolorofeachcolorProportion,andwhatcolorshouldbeaddedtoachievethenumericalindicators,andthencolormatching,bothaccurateandfastInthecarrepairThecomputercolormeasurementandcolormatchingsystemhasbeenwidelyusedintheindustryAnotherkindofartificialcompoundpaint,mainlybasedonpracticalexperience,accordingtotheneedsofthecolorpainttemplatetoidentifytheexistenceofseveralWhatistheapproximateproportionofthemonochromeandthemonochromaticAccordingtothebasicprincipleofcolorscienceThefollowingtechniquesareincludedinthetoningprocess()becarefulwhentoning,trythesamplefirst,andgettheamountofcolormatchingpaintfirst,thenrootAccordingtotheresultsofsamplepreparationandsampleFirsttheminorandsecondarycolorsareadjustedseparatelyinasmallcontainer()firstaddthemaincolor(inlargeamountofcolormatching,smallcolorpower),andthenthedarkcolorofgreatdyeingpower(orcolor)slowlyandintermittentlyjoined,andconstantlystirring,observethecolorchangesatanytime()"fromtheshallowertothedeeper",especiallywhenaddingpowerfulpigments,shouldnotbeexcessive()incolormatching,thereisaslightdifferenceincolorbetweenthecoatingandthedriedfilmColorsofpaintWetfilmisgenerallyshallow,whenthepaintisdried,thecolorisdeepenedTherefore,ifthesampleisdrysample,thenthecolorpaintneedsAfterdrying,thecoloriscomparedifthesampleiswetsample,youcandropthesampleinthecolormatchingpaint,viewCheckwhetherthetwocolorsarethesame()thefloatingdegreeofprimarycolorsincompoundpaintsandthechangeofpaint,especiallytheaminogroups,shouldbeknowninadvanceMoreattentionshouldbepaidtocoatingsandvinylchloridecoatings()whenmixingcomplexcoatings,thesamekindofcoatingsshouldbeselectedandthesolventsystemshouldbemiscible,Ifthecompatibilityisnotgoodpaint,willaffectthequality,evendelaminationandprecipitationorgelationphenomenon,cannotmakeUse()thecoloroftenwithvariouscolordifferent,ifthedistributionisgreen,withyellowandblueingeneralBluewithyellowheadredandblueheadwithredheadshouldbeusedwhenmixedwithpurplishredyellowheadshouldbeusedwhenorangeisusedRedandyellowwithredhead()weshouldpayattentiontowhatauxiliarymaterialsshouldbeaddedintheprocessofcolorblending,suchasdryingagentandcuringagentThecoloroftheagent,diluent,etc,soasnottoaffectthecolor()intheblendingofgray,greenandothercomplexcolorpaint,duetothepreparationofavarietyofpigments,pigmentdensity,oilabsorptionTheamountofdifferent,likely"floating"and"floating"phenomenon,thenbeappropriatetoaddsurfactantortraceLevelingagent,antifloatingcoloragenttosolveAsusual,addsiliconeoiltopreventandcontrol,foreigncompaniesproducedavarietyofsurfaceactivityItisnecessarytodistinguishwhichsolventsystemisused,andtheadditionamountisgenerallybetweenand()thepaintfilmisslightlytransparent
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