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【英文标准名称】:StandardPracticeforCarbonBlack,Pelleted-Reduction,Blending,andDryingofGrossSamplesforTesting
【原文标准名称】:碳黑,颗粒缩径和大型样品混合用标准实施规程
【标准号】:ASTMD5817-2003a(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D24.61
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:carbonblack;pelletedcarbonblack;reducingandblendingcarbonblack;Blendingmaterialsprocess;Carbonblack--pelleted;Carbonblacksampling;Dryingconditions/processing;Grosssamples;Reduction
【摘要】:Severaltestmethodsforcarbonblackrequirethereductioninsamplesizeortheblendingofthetestsampletoreducethevariationofthemeasuredcharacteristic.Otherfactorsbeingequal,largersampleswilltendtobemorerepresentativeofthetotalsupply.Thispracticeprovidesproceduresforreducingthelargesampleobtainedfromthebagandbulksamplingpracticestoaconvenientsizeforconductinganumberofteststodescribethematerialandmeasureitsqualityinsuchamannerthatthesmallerportionismostlikelytobearepresentationofthebulksample.Failuretofollowtheproceduresinthispracticecouldresultinprovidinganonrepresentativesampletobeusedinsubsequenttesting.Individualtestmethodsprovideforminimumamountsofmaterialtobetested.TestMethodA,ReductionofSampleSize,istypicallyusedtoobtainanaliquotfromalargesample,splittingablackintotwoormoreequalportions,orreducingablendedblackfromTestMethodBtoaspecifiedsamplesize.Thefinalsampleisalwayssmallerthantheoriginalsampleandwouldnotbeconsideredtobeax201C;wellblendedx201D;sample.TestMethodB,BlendingofCarbonBlack,istypicallyusedtoprepareahomogeneoussample.Thehomogeneoussamplemaybeusedforseveraltests(seeNote3)ormaybereducedinsizebyTestMethodA.Thefinalsamplesizeisthesameastheoriginal.Whenasampleistobeblendedandreduced,thesampleshouldbeblended(TestMethodB)beforereduction(TestMethodA).Theblendingandreductionmustbedonebeforethesampleisdried(TestMethodC).1.1Thispracticedescribestheprocedureforblendingofpelletedcarbonblack,theprocedureforthereductionofgrosssamplesofpelletedcarbonblacktotheappropriatesizefortestingandthepreparationofthesamplefortesting.Thesetechniquesareintendedtominimizevariationsinmeasuredcharacteristicsbetweentestsamples.StandardterminologyrelatingtocarbonblacksamplesisfoundinTerminologyD3053.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G49
【国际标准分类号】:71_060_10
【页数】:3P.;A4
【正文语种】:英语