【英文标准名称】:StandardTestMethodforLinearDensityofYarn(YarnNumber)bytheSkeinMethod
【原文标准名称】:用绞纱法试验纱线线密度(纱线支数)用标准试验方法
【标准号】:ASTMD1907-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:延伸能力;材料性能;绞纱;试验;纱
【英文主题词】:yarnlineardensity,yarnnumber
【摘要】:1.1Thistestmethodcoversthedeterminationofthelineardensityofalltypesofyarninpackageform,subjecttothelimitationsofsizeandstretchgiveninand.Provisionismadeforexpressingyarnlineardensityinallthetraditionalyarnnumberingsystems.1.2Thismethodisapplicabletoyarnsthatstretchlessthan5%whentensionontheyarnisincreasedfrom0.25to0.75cN/tex(0.25to0.75gf/tex).Bymutualagreement,anduseofalowerthanspecifiedreelingtension,thismethodmayalsobeadaptedtomeasurethelineardensityofyarnsthatstretchmorethan5%,undertheaboveforce.1.3Thismethodisapplicabletoyarnsfinerthan2000tex.However,itmaybealsoadaptedtocoarseryarnsbytheuseofskeinsofshorterthanspecifiedlengths,andalternatereelingconditions,agreeabletotheinterestedparties.1.4Dependingontheprocedureusedtocalculatethemoisturecontentoftheyarnbeingtested,anditsactualmoisturecontent,orfinishcontent,orboth,oneormoreofthefollowingoptionsmaybeutilized.1.4.1UnscouredYarnOption1-Yarnatequilibriumwiththestandardatmospherefortestingtextiles.Option2-Oven-driedyarn.Option3-Oven-driedyarn,pluscommercialmoistureregain.1.4.2ScouredYarnOption4-Scouredyarnatequilibriumwiththestandardatmospherefortestingtextiles.Option5-Oven-dried,scouredyarn.Option6-Oven-dried,scouredyarn,pluscommercialmoistureregain.Option7-Oven-dried,scouredyarn,pluscommercialallowance(commercialmoistureregain,plusanallowanceforfinish).1.5Specimensusedtodetermineyarnlineardensitymayalsobeusedtodeterminetheskeinbreakingstrengthoftheyarn.Hence,thismethodprovidesthesequenceofstepstobefollowed,todetermineboththeseyarnproperties.Note1Thelineardensityofyarnsproducedwithjute,orglass,mayalsobedeterminedbythefollowingapprovedmethods:SpecificationsD541,D578,andD681.Thelineardensityofshortyarnsegments,raveledfromfabrics,maybedeterminedbyTestMethodD1059.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.ThevaluesshowninparenthesesareapproximateconversionstoU.S.customaryunitequivalents.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W04
【国际标准分类号】:59_080_20
【页数】:9P.;A4
【正文语种】: