NF S75-504-1994 手套的一般要求
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来源:标准资料网
【英文标准名称】:GENERALREQUIREMENTSFORGLOVES.(EUROPEANSTANDARDEN420).
【原文标准名称】:手套的一般要求
【标准号】:NFS75-504-1994
【标准状态】:作废
【国别】:法国
【发布日期】:1994-09
【实施或试行日期】:1994-08-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:C73
【国际标准分类号】:13_340_40
【页数】:22P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforIgnitionofMaterialsbyHotWireSources
【原文标准名称】:热丝源法测定材料的点燃性的标准试验方法
【标准号】:ASTMD3874-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D09.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:hotwire;ignition;resistancetoignition;Electricalinsulatingsolids;Electricalresistance/resistivity--insulatingmaterials;Heatingtests--electricalinsulatingmaterials;Hotwiresources/applications;Ignition--electricalinsulatingmaterials;
【摘要】:Duringoperationofelectricalequipment,includingwires,resistors,andotherconductors,itispossibleforoverheatingtooccur,undercertainconditionsofoperation,orwhenmalfunctionsoccur.Whenthishappens,apossibleresultisignitionoftheinsulationmaterial.Thistestmethodassessestherelativeresistanceofelectricalinsulatingmaterialstoignitionbytheeffectofhotwiresources.Thistestmethoddeterminestheaveragetime,inseconds,requiredformaterialspecimenstoigniteunderthespecifiedconditionsoftest.Thismethodissuitabletocharacterizematerials,subjecttotheappropriatelimitationsofanexpectedprecisionofx00B1;15%,tocategorizematerials.Inthisprocedurethespecimensaresubjectedtooneormorespecificsetsoflaboratoryconditions.Ifdifferenttestconditionsaresubstitutedortheend-useconditionsarechanged,itisnotalwayspossiblebyorfromthistesttopredictchangesinthefire-test-responsecharacteristicsmeasured.Therefore,theresultsarevalidonlyforthefiretestexposureconditionsdescribedinthisprocedure.1.1Thistestmethodisintendedtodifferentiate,inapreliminaryfashion,amongmaterialswithrespecttotheirresistancetoignitionbecauseoftheirproximitytoelectrically-heatedwiresandotherheatsources.1.2Thistestmethodappliestomoldedorsheetmaterialsavailableinthicknessesrangingfrom0.25to6.4mm(0.010to0.25in.).1.3Thistestmethodappliestomaterialsthatarerigidatnormalroomtemperatures.Thatis,itappliestomaterialsforwhichthespecimendoesnotdeformduringpreparation,especiallyduringthewire-wrappingstepdescribedin10.1.Examplesofdeformationthatrenderthistestmethodinapplicableinclude:1.3.1Bowing,ineitheratransverseoralongitudinaldirection,ortwistingofthespecimen,duringthewire-wrappingstep,toadegreevisibletotheeye.1.3.2Visibleindentationofthewrappedwireintothespecimen.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareforinformationonly.(Seeforfurtherdetails.)1.5Thistestmethodmeasuresanddescribestheresponseormaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,products,orassembliesunderactualfireconditions.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.7Firetestingisinherentlyhazardous.Adequatesafeguardsforpersonnelandpropertyshallbeemployedinconductingthesetests.Note18212;AlthoughthistestmethodandIEC60695-2-20,differinapproachandindetail,dataobtainedusingeitheraretechnicallyequivalent.
【中国标准分类号】:C80
【国际标准分类号】:29_035_01
【页数】:4P.;A4
【正文语种】:英语
Product Code:SAE AMS7258
Title:Rings, Sealing, Butadiene-Acrylonitrile (Nbr) Rubber Fuel Resistant, Low Shrinkage 65-75
Issuing Committee:Ams Ce Elastomers Committee
Scope:This specification covers butadiene acrylonitrile (NBR) rubber in the form of molded rings. Primarily for use in aircraft fuel systems operating from -55 degrees to +125 degrees C (-67 degrees +257 degrees F). These rings contain less plasticizer than normally used in aircraft fuel seals; therefore, there is less shrinkage when the rings are dried out.
