Designation:D4005−92(Reapproved2022)StandardTestMethodforPlastic-CoatedFabrics—CompletenessofFusionofPVCDispersionCoatings1ThisstandardisissuedunderthefixeddesignationD4005;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesasimpleproceduretodeter-minethecompletenessoffusionofpoly(vinylchloride)(PVC)dispersioncoatingsonfabric.Thistestappliesprimarilytocoatingswithamechanicalbondanddoesnotincludetiecoating.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.3Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.SummaryofTestMethod2.1SpecimensofthePVC-coatedfabricareexaminedforsurfacecracksorbreaks,followedbyimmersioninacetone.Subequentappearanceofadditionalcrackingindicatesthatfusionisincomplete.3.SignificanceandUse3.1Poly(vinylchloride)(PVC)isappliedtocoatedfabricsasadispersionofPVCparticlesinaliquidvehicle.DuringtheprocessingofthefabricthePVCisfusedormeltedtoproduceauniformfilmonthefabric.ThistestmeasureswhetherthePVCisconverted,fused,ormeltedtoproduceahomogeneousfilm.3.2Thisconversionprocessisameltingofthecrystallitestructuresinthepolymerparticlesfollowedbysolutionofthemoltenpolymerintheplasticizingvehicle.FusionisimportantintheproductionofPVC-coatedfabrics.4.ApparatusandReagents4.1GlassBeaker,500-mL.4.2Acetone.4.3GlassRods,5-mmdiameter.4.4MetalClips.5.Sampling5.1Selectasampleofcoatedfabrictoadeq...
