Designation:D6606−00(Reapproved2010)StandardTestMethodforViscosityandYieldofVehiclesandVarnishesbytheDukeViscometer1ThisstandardisissuedunderthefixeddesignationD6606;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheprocedurefordeterminingtheviscosityofvarnishes,inkvehicles,andsimilarliquidsthatareessentiallynonvolatileandunreactiveunderordinaryroomconditionsusingtheDukeAutomatedhigh-shearrodandcollarviscometer.21.2Theinstrumentinthistestmethodissimilarinprincipletothefalling-rodviscometerdescribedinTestMethodD4040exceptthatthecollarismotordrivenandtherangeofavailableshearstressesisconsiderablygreater.Thisinstrumentiscapableofmeasuredandextrapolatedviscosityandyieldvaluesprovidedthepropermodelischosenforthegivenapplication.SeeSection6fortherangesofspecifiedmodels.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,thatmaybeassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishanyappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3D4040TestMethodforRheologicalPropertiesofPastePrintingandVehiclesbytheFalling-RodViscometer3.Terminology3.1Definitions—TermsrelativetothistestmethodaredefinedinTestMethodD4040exceptforthosefoundin3.2.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1yieldvalue,n—TheLehman’syieldvaluethatisdefinedasthestressat2.5s−1.3.2.1.1Discussion—Thisvaluecanbeeitherextrapolatedormeasured.3.2.2shortnessratio,n—aratiotodeterminetheshortnesscharacteristicofthefluidwhereSR=yieldvalue/apparentviscosity.4.SummaryofTestMethod4.1Thisautomatedtestmethodisbaseduponaccuratemeasurementoftheforcethati...
