【英文标准名称】:Rubber,vulcanizedorthermoplastic.Determinationoftearstrength.Trouser,angleandcrescenttestpieces
【原文标准名称】:硫化或热塑性橡胶.撕裂强度的测定.裤形、直角形和新月形试片
【标准号】:BSISO34-1-2004
【标准状态】:作废
【国别】:英国
【发布日期】:2004-04-06
【实施或试行日期】:2004-04-06
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:撕裂扩展力;热塑性聚合物;试验设备;合成橡胶;扯裂试验;试样;试样;抗撕裂性;尺寸;试验;机械试验;弹性体;抗拉强度;撕裂扩展试验;材料强度;裤形试验件;直角试验;测定;橡胶;硫化橡胶;定义
【英文主题词】:Angletests;Definitions;Determination;Dimensions;Elastomers;Forcemeasurement;Mechanicaltesting;Plasticsandrubbertechnology;Rubber;Samples;Shape;Strengthofmaterials;Syntheticrubber;Tearpropagationforce;Tearpropagationtests;Tearresistance;Teartests;Tensilestrength;Tensiletesting;Testequipment;Testspecimens;Testing;Testingconditions;Tests;Thermoplasticpolymers;Trousertestpiece;Vulcanizedrubber
【摘要】:ThispartofISO34specifiesthreetestmethodsforthedeterminationofthetearstrengthofvulcanizedandthermoplasticrubber,namely—MethodA,usingatrousertestpiece;—MethodB,usinganangletestpiece,withorwithoutanickofspecifieddepth;—MethodC,usingacrescenttestpiecewithanick.Thevalueoftearstrengthobtaineddependsontheshapeofthetestpiece,speedofstretchingandtemperatureoftest.Itmayalsobesusceptibletograineffectsinrubber.MethodA:UsingatrousertestpieceMethodA,usingthetrousertestpiece,ispreferredbecauseitisnotsensitivetothelengthofthecut,unliketheothertwotestpiecesinwhichthenickhastobeverycloselycontrolled.Inaddition,theresultsobtainedaremoreeasilyrelatedtothefundamentaltearpropertiesofthematerialandarelesssensitivetomoduluseffects(providedthatthelegextensionisnegligible)andtherateofpropagationofthetearisdirectlyrelatedtotherateofgripseparation.Withsomerubbers,thepropagationoftearisnotsmooth(knottytear),andanalysisofresultsmaybedifficult.MethodB,procedure(a):UsinganangletestpiecewithoutnickThistestisacombinationoftearinitiationandpropagation.Stressisbuiltupatthepointoftheangleuntilitissufficienttoinitiateatearandthenfurtherstressespropagatethistear.Howeveritisonlypossibletomeasuretheoverallforcerequiredtorupturethetestpiece,and,therefore,theforcecannotberesolvedintwocomponentsproducinginitiationandpropagation.'1'MethodB,procedure(b):UsinganangletestpiecewithnickThistestmeasurestheforcerequiredtopropagateanickalreadyproducedinthetestpiece.Therateofpropagationisnotdirectlyrelatedtothejawspeed.'21MethodC:UsingacrescenttestpieceThistestalsomeasurestheforcerequiredtopropagateanickalreadyproducedinthetestpieceandtherateofpropagationisnotrelatedtothejawspeed.NOTEAseparatemethodforthedeterminationofthetearstrengthofsmalltestpiecesofrubber(Delfttestpieces)isspecifiedinISO34-2.[3]
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:20P.;A4
【正文语种】:英语