【英文标准名称】:StandardTestMethodforCoefficientofFriction,YarntoSolidMaterial
【原文标准名称】:固体材料纱线摩擦系数的标准试验方法
【标准号】:ASTMD3108-2007
【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】:系数;摩擦;摩擦系数;固体;试验;纺织试验;纺织材料;纱
【英文主题词】:coefficientoffriction;yarn
【摘要】:1.1Thistestmethodcoversthemeasurementofthekineticfrictionalpropertiesofamovingyarnincontactwithasolidmaterial.Fordeterminingyarn-to-yarnfriction,refertoTestMethodD3412.1.2Thistestmethodspecifiesarelativespeedof100m/min.Thetestmethodmaybeusedatotherspeeds,althoughwithapossiblechangeinprecisionandcoefficientoffriction.1.3Thistestmethodcoversthemeasurementofthecoefficientofkineticfrictionbetweenyarnandsolidsurfaceorsurfacesofconstantradiusinthecontactarea.Ifayarnofuniformvalueisused,comparisonsoffrictionalpropertiesofdifferentsolidmaterialscanbemadewithrelationtothatyarn.Ifagivensolidmaterialisused,comparisonsoffrictionalpropertiesofdifferentyarns,oryarnswithdifferentfinishes,canbemadewithrelationtothatparticularsolidmaterial.1.4Thistestmethodspecificallyrecommendswrapanglesof3.14and6.28radian(180and360),butotherwrapanglesmaybeused,againwithapossiblechangeinprecisionandlevel.Theangleofwrapshouldnotbesogreat,especiallyforyarnshavinghighcoefficientsoffriction,thatitcausestheoutputtensiontoexceedtheyieldvaluefortheyarnbeingtested.Also,ineverycasetheangleofwrapshouldnotbelessthan1.57rad(90).1.5Thistestmethodhasbeenappliedtoyarnshavinglineardensitiesrangingbetween10and80tex(90and720denier)andhavingcoefficientsoffrictionrangingbetween0.1and0.5butmayalsobeusedwithyarnsoutsidetheserangesoflineardensitiesandcoefficientsoffriction.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection7.
【中国标准分类号】:W04
【国际标准分类号】:59_080_20
【页数】:6P.;A4
【正文语种】: