Designation:D6736−08(Reapproved2013)StandardTestMethodforBurnishResistanceofLatexPaints1ThisstandardisissuedunderthefixeddesignationD6736;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversaprocedureformeasuringtheresistanceoflatexpaintstoburnishingunderdryconditions.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D523TestMethodforSpecularGlossD2486TestMethodsforScrubResistanceofWallPaintsD3924SpecificationforEnvironmentforConditioningandTestingPaint,Varnish,Lacquer,andRelatedMaterials3.Terminology3.1Definitions:3.1.1burnishresistance,n—theabilityofacoatingtoresistanincreaseinitsgloss(sheen)valueafterpolishingorrubbing.4.SummaryofTestMethod4.1Testpaintsaredrawndownlengthwiseonplasticpanelsusinga0.18-mm(7.0-mil)applicatorandallowedtoair-dryforoneweek.Glossreadingsaretakenatthreeequallyspacedpoints,lengthwisealongthecenterofthepanel.Thepanelisthenrubbedfor20cyclesonascrubmachine,afterwhichglossreadingsareagaintakenalongthesamepathabradedbythescrubmachine.Theinitialvaluesareaveragedandthefinalvaluesareaveraged.Thedifferencebetweentheinitialandfinalglossreadings,dividedbytheinitialreadingtimes100isaquantitativeindicationofthepaint’sresistancetoburnishing.Higherpercentageincreasesdenotepoorerresistanceandvice-versa.5.SignificanceandUse5.1Interiorflatpaintsmaybecomeburnishedinareaswhereclothingorupholsteredfurniturerubagainstawall.Thisrubbingmaycauseasmoother,glossiersurfaceatthecontactedarea,depending...
