Designation:D3012−13StandardTestMethodforThermal-OxidativeStabilityofPolypropyleneUsingaSpecimenRotatorWithinanOven1ThisstandardisissuedunderthefixeddesignationD3012;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodprovidesameansforestimatingtheresistanceofpolypropylene,inmoldedform,toacceleratedagingbyheatinthepresenceofairusingaforceddraftoven.1.2Thestabilitydeterminedbythistestmethodisnotdirectlyrelatedtothesuitabilityofthematerialforusewhendifferentenvironmentalconditionsprevailandshallnotbeusedtopredictperformance.NOTE1—Thespecifiedthermallevelsinthistestmethodareconsideredsufficientlyseveretocausefailureofcommercialgradesofheat-stablepolypropylenewithinareasonableperiodoftime.Ifdesired,lowertemperaturescanbeappliedtoestimatetheperformanceofpolypropylenewithlowerheatstabilities.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.NOTE2—ThistestmethodandISO4577–1983aretechnicallysimilarbutdifferentinpreparationoftestspecimens,thicknessoftestspecimen,measurementofthenumberofairflowchangesintheovens,andthenumberofairchangesperhourrequired.2.ReferencedDocuments2.1ASTMStandards:2D618PracticeforConditioningPlasticsforTestingD883TerminologyRelatingtoPlasticsD3641PracticeforInjectionMoldingTestSpecimensofThermoplasticMoldingandExtrusionMaterialsD4101SpecificationforPolypropyleneInjectionandExtru-sionMaterialsD5374TestMethodsforForced-ConvectionLaboratoryOv-ensforEvaluationofElectricalInsulationE77TestMethodforInspectionandVerificationofTher-mometersE...
