ASTM D7570-2009 绒头纱线地板覆盖物的尺寸稳定性评价的标准试验方法

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【英文标准名称】:StandardTestMethodforEvaluationofDimensionalStabilityofPileYarnFloorCovering
【原文标准名称】:绒头纱线地板覆盖物的尺寸稳定性评价的标准试验方法
【标准号】:ASTMD7570-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D13.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:carpet;dimensionalstability;modularcarpet;pileyarnfloorcovering;textilefloorcovering
【摘要】:Thedeterminationofdimensionalchangeofpileyarnfloorcoveringisusefulinqualityandcostcontrolduringmanufactureofpileyarnfloorcovering.Theappearanceandperformancemaybeaffectedbythechangesinthedimensionsofpileyarnfloorcovering.Thistestmethodisconsideredsatisfactoryforacceptancetestingofcommercialshipmentbecausecurrentestimatesofbetweenlaboratoryprecisionareacceptable,andthismethodiscommonlyusedinthetradeforacceptancetesting.Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestsshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthemusingcompetentstatisticalassistance.Asaminimumusethesamplesforsuchcomparativeteststhatareashomogenousaspossible,drawnfromthesamelotofmaterialasthesamplesthatresultedindisparateresultsduringinitialtestingandrandomlyassignedinequalnumberstoeachlaboratory.Thetestresultsfromthelaboratoriesinvolvedshouldbecomparedusingastatisticaltestforunpaireddata,aprobabilitylevelchosenpriortothetestingseries.Ifabiasisfoundeitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.1.1Thistestmethodcoversthedeterminationofdimensionalchangesinthelengthwiseandwidthwisedirectionanddistortionlikelytooccurwhenpilefloorcoveringsareexposedtovariousconditionsofmoistureandheat.Thismethodisapplicabletoallpilefloorcoveringsincludingcarpetmoduleform.1.2Thismethodisapplicabletomachinemadepileyarnfloorcovering.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversiontoSIunitsthatareprovededforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W56
【国际标准分类号】:59_080_60
【页数】:4P.;A4
【正文语种】:英语