Designation:D3855−84(Reapproved2010)StandardTestMethodforRubberThread—DeteriorationDuetoStandardWashingSolutionTreatment1ThisstandardisissuedunderthefixeddesignationD3855;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthemeasurementoftherelativedeteriorationresistanceofbarerubberthreadssubjectedtoastandardwashingsolutionwhentheyaredriedatroomtemperatureandheataged.1.2Theresultsobtainedbythistestmethodareonlycomparativesinceitmaynotbepossibletoabsolutelycorrelatesuchresultswithactualservicelifeofthethreadsorofanarticlecontainingthethreads.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D2433TestMethodsforRubberThread(Withdrawn2012)3E145SpecificationforGravity-ConvectionandForced-VentilationOvens3.SummaryofTestMethod3.1TheinitialpropertiesofthethreadaredeterminedbytheappropriatetestmethodsinaccordancewithTestMethodsD2433.Thesametestspecimens,extendedto100%elonga-tion,aresubjectedtoonecycleofwashing,drying,andair-ovenaging.3.2ThephysicalpropertymeasuredinthetestmaybeanyoneofthosedescribedinSections18to37ofTestMethodsD2433;however,themostsuitablearetheSchwartzvalue(Section25)orstressretention(Section35).4.SignificanceandUse4.1Rubberthreadsorgarmentscontainingrubberthreadsareveryoftensubjectedtowashingtreatmentsthatdifferconsiderablyinthecompositionandtemperatureofthewash-ingsolutionused.Informationonthecompositionofcommer-cialdetergentsusedisnotreadilyavailable,andthesamebrandnamemaycontainvariatio...
