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【英文标准名称】:StandardTestMethodforMicronaireReadingofCottonFibers
【原文标准名称】:棉纤维的马克隆尼读数的标准试验方法
【标准号】:ASTMD1448-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:D13.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:棉花;细度;马克隆尼气流式纤维细度测试仪读数;气流阻力;棉布/纤维;成熟度-棉纤维;纱线支数
【英文主题词】:cotton;fineness;micronairereading;Airflowresistance;Cottonfabrics/fibers;Maturity--cottonfibers;Yarnnumber
【摘要】:Thistestmethodisconsideredsatisfactoryforacceptancetestingwhenthelevelsofthelaboratoriesarecontrolledbytheuseofthesamereferencestandardcottonsamplesbecausethecurrentestimatesofbetween-laboratoryprecisionareacceptableundertheseconditions.Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestsshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,ensurethetestsamplestobeusedareashomogeneousaspossible,aredrawnfromthematerialfromwhichthedisparatetestresultswereobtained,andarerandomlyassignedinequalnumberstoeachlaboratoryfortesting.Thetestfromthetwolaboratoriesshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Themicronairereadingofcottonfibersisafunctionofbothfinenessandmaturityandisrelatedtomillprocessingperformanceandtothequalityoftheendproducts.Factorscorrelatedwithmicronairereadingincludecleaningefficiency,neppiness,andthestrengthanduniformityoftheyarn.Note28212;Amodificationofthistestmethodisusedincommercialtradingtoselectbaleswhichwillconformtocontractguaranteesforspecifiedmicronairereadings(refertoD5867).Forthispurpose,itisusualpracticetotestonlyonespecimenpersample.1.1Thistestmethodcoversthedeterminationofthemicronairereadingofloosecottonfibersbymeasuringtheresistanceofaspecificmass(plug)ofcottonfiberstoairflowunderprescribedconditions.Note18212;Forothermethodsfordeterminingthefinenessoffibersbasedontheair-flowprinciple,refertoTestMethodD1449,TestMethodforSpecificAreaandImmaturityRatioofCottonFibers(ArealometerMethod),andtoTestMethodD1282,TestMethodforResistancetoAirFlowasanIndicationofAverageFiberDiameterofWoolTop,CardSliver,andScouredWool.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W10
【国际标准分类号】:59_060_10
【页数】:3P.;A4
【正文语种】: