ASTM D3939/D3939M-2010 织物防钩丝性的标准试验方法(钉锤法)

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【英文标准名称】:StandardTestMethodforSnaggingResistanceofFabrics(Mace)
【原文标准名称】:织物防钩丝性的标准试验方法(钉锤法)
【标准号】:ASTMD3939/D3939M-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D13.59
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:knittedfabric;snaggingresistance;wovenfabric;Macetestmethod;Man-madetextilefibers;Nonwoventextilefabrics;Snaggingresistance;Textilefabrics(general);Yarnproperties
【摘要】:Thistestmethodisnotconsideredsatisfactoryforacceptancetestingofcommercialshipmentsoffabricsbecausethebetween-laboratoryprecisionofthetestmethodispoor(see15.1).Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestshouldbeperformedtodetermineifthereisastatisticalsignificantdifferencebetweenthem,usingcompetentstatisticalassistance.Asaminimum,usethesamplesforsuchacomparativetestthatareashomogeneousaspossible,drawnfromthesamelotofmaterialasthesamplesthatresultedindisparateresultsduringinitialtestingandrandomlyassignedinequalnumberstoeachlaboratory.Thetestresultsfromthelaboratoriesinvolvedshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifbiasisfound,eitheritscausemustbefoundandcorrectedorfuturetestingforthatmaterialmustbeadjustedinconsiderationofthestatisticallysignificantdifferences.Thistestmethodmaybeusedforqualitycontroltestingoffabricsduringmanufacturingandproductcomparisonsofdifferentfabricsbymanufacturers,retailers,andusers.Thistestmethodmayalsobeusedbyresearcherstoexaminetheeffectofnewfibers,yarns,fabricconstructions,andfinishesonthesnaggingresistanceoffabrics.Thistestmethodmaybeusedtotestthesnaggingresistanceofmostapparelandhomefurnishingsfabrics.However,adifferenttestmethodmaybeneededfordifferenttypesoffabricsanddifferentend-uses(suchastowels,pants,andupholstery)(see5.3.1).Somefabricsthatmaynotbesuitableforthistestmethodaredescribedin1.2.ManyopenconstructionfabricscanbetestedforsnaggingresistanceusingAATCCTestMethod65.ThesnaggingresistanceofmanypilefloorcoveringscanbetestedbyTestMethodD1335.TestMethodD5362(BeanBag)mayalsobeconsideredasanalternativefortestingthesnaggingresistanceoffabrics.ThistestmethoddoesnotapplytotheABCSnagTester.Sincefabricsnaggingcanbeaffectedbylaunderingordrycleaning,itmaybeadvisabletotestthesnaggingresistanceofafabricbeforeandafterlaunderingordrycleaning.Thesnaggingresistanceofaspecificfabricvarieswithindividualwearersandgeneralconditionsofuse.Therefore,itcanbeexpectedthatgarmentsofthesamefabricwillshowafairlywidesnaggingresistancespectrumafterwearandmuchgreatervariationinwearthaninreplicatefabricspecimenssubjectedtocontrolledlaboratorytests.Thisfactorshouldbeconsideredwhenadoptinglevelsofacceptabilityforanyspecificationthatincludessnaggingresistance.Snagsobservedinworngarmentsvaryappreciablyinnumberandappearance.Theappearanceofasnagdependsparticularlyon(1)thedegreeofcolorcontrastbetweenthesnagandthesurroundingareaofthefabricor(2)thepresenceoflongdistortionsorlongprotrusions.Theseconditionsarenotevaluatedwhensnaggingisratedsolelyonthenumberofsnags.SeeSection13foradescriptionofcolorcontrast,distortion,andprotrusionasusedinthistestmethod;andseeFigs.1through3inTestMethodD5362forpicturesoffabricdefectsduetosnagging.Becausetheoverallacceptabilityofaspecificfabricisdependentonboththecharacteristicsofthesnagsandotherfactorsaffectingfabricappearance,itisrecommendedthatfabricstestedinthelaboratorybeevaluatedwithregardtothedefectsthatmaybeobservedvisuallyandnotra......
【中国标准分类号】:W55
【国际标准分类号】:59_080_30
【页数】:8P.;A4
【正文语种】:英语