EN ISO 26985-2012 弹性覆地材料.油毡的标识和粘结剂及无机添料含量测定
时间:2024-05-27 03:00:27 来源: 标准资料网 作者：标准资料网 阅读：9749
【英文标准名称】:Resilientfloorcoverings-Identificationoflinoleumanddeterminationofcementcontentandashresidue(ISO26985:2008);GermanversionENISO26985:2012
【原文标准名称】:弹性覆地材料.油毡的标识和粘结剂及无机添料含量测定
【标准号】:ENISO26985-2012
【标准状态】:现行
【国别】:
【发布日期】:2012-04-01
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Bindingagents;Cementcontent;Definitions;Determinationofcontent;Elastic;Extenders;Fittedcarpets;Floorcoverings;Inorganic;Inorganicmaterials;Linoleum;Residuesonignition;Samplingmethods;Testperformance;Testreports;Testing
【摘要】:
【中国标准分类号】:W56
【国际标准分类号】:97_150
【页数】:10P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforTwistinSingleSpunYarnsbytheUntwist-RetwistMethod
【原文标准名称】:退捻加捻法测定单细纱捻数的标准试验方法
【标准号】:ASTMD1422-1999(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【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】:D13.58
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:spunyarn;twist;Twist--textiles
【摘要】:Thistestmethodisusedforacceptancetestinginthetradeforeconomicreasonseventhoughitislessaccuratethanthedirectmethod,TestMethodD1423.Iftherearedifferencesorpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestsshouldbeperformedtodetermineiftheirisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,thetestsamplesshouldbeusedthatareashomogeneousaspossible,thataredrawnfromthematerialfromwhichthedisparatetestresultsareobtained,andthatareassignedrandomlyinequalnumberstoeachlaboratoryfortesting.Othermaterialswithestablishedtestvaluesmaybeusedforthispurpose.Thetestresultsfromthetwolaboratoriesshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsmustbeadjustedinconsiderationoftheknownbias.Thex201C;settingx201D;oftwistinsomefiberscausesexcessivecontractionwhentheyarnisretwistedinthereversedirection.Therefore,thenumberofturnsrequiredtobringthespecimenbacktoitsoriginallengthmaybelessthanthenumberofturnsremovedinuntwisting.Thiseffectmaybepartiallyoffsetbytheuseofhigherpretensioningloads;butthisincreasesthedangerofstretchingtheyarn.Littleinformationisavailableonthecorrecttensionstouseforyarnsmadefromdifferentfibersorwithdifferentamountsoftwist.Inadditiontobeinglesstedious,thistestmethodrequiresfewerspecimensthanthedirect-countingmethodandtheresultsmaybesufficientlyaccurateforcertainpurposes.Thistestmethodcanbeusefulinthosecaseswherethemainobjectiveistomeasurevariationsfromanaveragevalue.Anotherpossibleapplicationiswherealargeamountoftwisttestingisrequiredonyarnsofsimilartypeandtwist.Inthiscasepreliminarytestscomparingthismethodandthedirectmethodcouldbeusedtodeterminethecorrectpretension.Twisthasimportanteffectsonthephysicalpropertiesofyarn.Low-twistyarnisloftyandisusuallypreferredforknittingbecauseofitssoftness,coveringpower,andwarmth.Increasingtheamountoftwistcausesanincreaseinyarnstrengthbyincreasingfibercohesion,butasthetwistangleincreasesbeyondanoptimumpoint,strengthdecreasesduetoalossineffectivefibercontribution.Maximumyarnstrengthisobtainedbyinsertingamediumamountoftwisttoobtainanoptimumbalancebetweenthesetwoopposingforces.Hightwistproducesyarnsofhighdensity(x201C;hardx201D;orx201C;wiryx201D;)andhighelongationandmayimprovetheabrasionandimpactresistanceoffabrics.Theoptimumtwistforeithermanufacturingefficiencyorphysicalpropertiesusuallyincreasesasstaplelengthdecreases.Thetwistinayarnbeforeitispackagedmaybedifferentfromthatoftheyarnafterithasbeenwithdrawnfromthepackagebecauseofchangesintensionandtheeffectofthemethodofwithdrawal.Iftheyarniswithdrawnover-end,aslightincreaseordecreaseintwistwilltakeplace,dependinguponthedirectionofthetwistintheyarn,thedirectionofwindingonthepackage,andthelengthoftheturn(orwrap)onthepackage.Note28212;Thedifferenceintwistbetweenunwindingfromthesideandover-endis1/x03C0;d,wheredisthediameterofthepackage.Thus,fora25-mm(1-in.)diameterpacka......【英文标准名称】:StandardPracticesforGeneralTechniquesofInfraredQuantitativeAnalysis
【原文标准名称】:红外线定量分析的一般技术的标准操作规程
【标准号】:ASTME168-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:分析方法;量;红外线;工艺学;分析
【英文主题词】:Analysis;Analyticalmethods;Infra-red;Quantity;Technology
【摘要】:
【中国标准分类号】:A43
【国际标准分类号】:71_040_50
【页数】:17P;A4
【正文语种】:英语