Designation:D1823−16StandardTestMethodforApparentViscosityofPlastisolsandOrganosolsatHighShearRatesbyExtrusionViscometer1ThisstandardisissuedunderthefixeddesignationD1823;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthemeasurementofplastisolandorganosolviscosityathighshearratesbymeansofanextrusionviscometer.1.2ApparentviscosityatlowshearratesiscoveredinTestMethodD1824.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesinparenthesesaregivenforinformationonly.1.4Thisstandarddoesnotpurporttoaddressthesafetyconcernsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.NOTE1—ThisstandardandISO4575-2007addressthesamesubjectmatter,butdifferintechnicalcontent.2.ReferencedDocuments2.1ASTMStandards:2D1475TestMethodForDensityofLiquidCoatings,Inks,andRelatedProductsD1755SpecificationforPoly(VinylChloride)ResinsD1824TestMethodforApparentViscosityofPlastisolsandOrganosolsatLowShearRatesE1SpecificationforASTMLiquid-in-GlassThermometersE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod2.2ISOStandard:ISO4575-2007PolyVinylChloridePastes—DeterminationofApparentViscosityUsingtheSeversRheometer33.SummaryofTestMethod3.1Thesampleisconditionedtothepropertemperature,placedintoanextrusionchamber,andextrudedunderstandardconditions.Theviscosityiscalculatedfromtheextrusionpressureandtherateofflowthroughtheorifice.4.SignificanceandUse4.1Thesuitabilityofadispersionresinforanygivenapplicationisdependentuponitsviscositycharacteristics.4.2Theextrusionviscositydefinestheflowbehaviorofaplastisolororganosolunderhighshear.Thisviscosityrelatestotheconditionsencounteredinmixing,pumping,knifecoating,r...
