ASTM D 1129-2001 与水相关的标准术语

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【英文标准名称】:Plastics--Determinationofflexuralproperties
【原文标准名称】:塑料制品.柔韧性能的测定
【标准号】:JISK7171-2008
【标准状态】:现行
【国别】:日本
【发布日期】:2008-03-20
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonChemicalProducts
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1.1ThisStandardspecifiesamethodfordeterminingthefiexuralpropertiesofrigidandsemi-rigidplasticsbythreepointloadingtest(itappliestoafreelysupportedbeam,loadedatmidspan)andspecifiesthespecimenstobetested.1.2Themethodisusedtoinvestigatethefiexuralbehaviourlitofthetestspecimensandfordeterminingthefiexuralstrength,fiexuralmodulusandotheraspectsofthefiexuralstress/strainrelationshipundertheconditionsdefined.1.3Themethodissuitableforusewiththefollowingrangeofmaterials:--thermoplasticsmouldingandextrusionmaterials,includingfilledandreinforcedcompoundsinadditiontounfilledtypes;rigidthermoplasticssheets;--thermosettingmouldingmaterials,includingfilledandreinforcedcompounds;ther-mosettingsheets.InagreementwithJISK7140-1andJISK7140-2,thisStandardappliestofibre-reinforcedcompoundswithfibrelengths≤7.5mmpriortoprocessing.Forlong-fibre-reinforcedmaterials(laminates)withfibrelengths＞7.5mm,seebibliography[2].Themethodisnotnormallysuitableforusewithrigidcellarmaterialsandsand-wichstructurescontainingcellularmaterial.NOTE:Forcertaintypesoftextile-fibre-reinforcedplastics,afour-pointbend-ingtestispreferred.Itisdescribedinbibliography[2].1.4Themethodisperformedusingspecimenswhichmaybemouldedtothespeci-fieddimensions,machinedfromthecentralportionofastandardmultipurposetestspecimen(seeJISK7139)ormachinedfromfinishedorsemi-finishedproductssuchasmouldings,orextrudedorcastsheet.1.5Themethodspecifiespreferreddimensionsforthetestspecimen.Testswhicharecarriedoutonspecimensofdifferentdimensions,oronspecimenswhicharepre-paredunderdifferentconditions,mayproduceresultswhicharenotcomparable.Otherfactors,suchasthetestspeedandtheconditioningofthespecimens,canalsoinflu-encetheresults.Especiallyforsemi-crystallinepolymers,thethicknessoftheorientedskinlayer,whichisdependentonmouldingconditionsandthickness,affectstheflex-uralproperties.Consequently,whencomparabledataarerequired,thesefactorsmustbecarefullycontrolledandrecorded.1.6Flexuralpropertiescanonlybeusedforengineeringdesignpurposesformateri-alswithlinearstress/strainbehaviour.Fornon-linearbehaviour,theflexuralprop-ertiesareonlynominal.Thebendingtestshouldpreferentiallybeusedwithbrittlematerials,forwhichtensiletestsaredifficult.NOTE~TheInternationalStandardcorrespondingtothisStandardisasfollows.ISO178:2001Plastics--Determinationofflexuralproperties(IDT)andAmendmentI(2004)Inaddition,symbolswhichdenotethedegreeofcorrespondenceinthecontentsbetweentherelevantInternationalStandardandJlSareIDT(identical),MOD(modified),andNEQ(notequivalent)accordingtoISO/IECGuide21.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:18P;A4
【正文语种】:日语

标准名称：	工业没食子酸
中标分类：	农业、林业 >> 林业 >> 林产化工原料
替代情况：	原标准号GB 5309-1985;被LY/T 1301-2005代替
发布日期：
实施日期：	2005-12-01
首发日期：
作废日期：
出版日期：
页数：	5页

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