ASTM D4703-2010 将热塑性材料压塑为试样、饰板或板材的标准实施规程

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【英文标准名称】:StandardPracticeforCompressionMoldingThermoplasticMaterialsintoTestSpecimens,Plaques,orSheets
【原文标准名称】:将热塑性材料压塑为试样、饰板或板材的标准实施规程
【标准号】:ASTMD4703-2010
【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】:D20.09
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:acrylonitrile-butadiene-styrene(ABS);chlorinatedpoly(vinylchloride)(CPVC);compressionmolding;polyethylene(PE);poly(vinylchloride)(PVC);styrene-butadiene;testspecimenpreparation;thermoplastics;Acrylonitrile-butadiene-styrene(ABS)
【摘要】:Themethodsbywhichsamplematerialsarepreparedandmoldedinfluencethemechanicalpropertiesofthespecimen.Unlikeinjectionmolding,theobjectiveofcompressionmoldingistoproducetestspecimensorsheetsthatarebothhomogeneousandisotropic.Moldedspecimensmaybemadefrompowderorpelletssuchasarereceiveddirectlyfromamaterialmanufacturer,particlesproducedinarecyclerecoveryoperation,orfromamilledpreformorsheetpreparedonatwo-rollmill.Thepowder,pellets,particles,preform,orsheetaremeltedandmoldedinamolddesignedtoproduceafinishedspecimenofagivengeometry,size,andthickness,ormeltedandmoldedintheformofasmoothplaqueorsheetofuniformthicknessfromwhichdesiredspecimensarecut,punched,ormachined.Workingacompoundonatwo-rollmillpriortomoldingwilldisperseanddistributethecompoundadditivesinamannerthatwillaffectthephysicalpropertiesofthecompound.Theneedformillingasamplepriortocompressionmoldingmaybedeterminedbyreferencetotherelevantmaterialspecificationorthematerialmanufacturer.Itisimportanttotreatdifferentsamplesofthesametypeofmaterialinthesameway:ifmillingwasdonepriortomoldingonamaterialwhichistobeusedasastandardforcomparison,allnewmaterialstobetestedagainstthispracticeshouldbepreparedandmoldedinasimilarmanner.Theapparatusandexactconditionsrequiredtoprepareadequatespecimensmayvaryforeachplasticmaterial.ApparatusandprocedureswhichshouldbesatisfactoryformoldingmanydifferentplasticmaterialsaregiveninthispracticeinSections5and6.TheapparatusandprocedureswhichhavebeenfoundsatisfactoryformoldingcertainspecificmaterialsaregivenintheAppendix.Inanycase,theapparatusandprocedurestobeusedinproducingcompression-moldedspecimensofagivenmaterialmaybeobtainedbyreferencetotherelevantmaterialspecificationandshouldbeagreeduponbetweenthepurchaserandthesupplier.1.1Thispracticecoversthecompressionmoldingofthermoplasticgranulesandmilledstockforthepreparationoftestspecimens.1.2Whileconditionsforcertainmaterialsaregiven,theprimarysourceofspecificconditionsshallbethematerialspecificationstandardsforeachtypeofmaterial.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThemainbodyofthispracticeisequivalenttoISO293-1986.AnnexA1andISO293-1986differinsomedetails;however,specimenspreparedusingAnnexA1,ProcedureAshouldbeequivalenttothosepreparedusingISO293-1986,CoolingMethodD.SpecimenspreparedusingAnnexA1,ProcedureCshouldbeequivalenttothosepreparedusingISO293-1986,CoolingMethodB.However,duetothegreatercoolingratetolerancesoftheISOstandard,specimenspreparedinaccordancewithISOCoolingMethodBmaynotbeequivalenttoAnnexA1,ProcedureC.
【中国标准分类号】:G33
【国际标准分类号】:
【页数】:12P.;A4
【正文语种】:英语


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【英文标准名称】:Animalandvegetablefatsandoil-Cocoabutterequivalentsincocoabutterandplainchocolate-Part2:quantificationofcocoabutterequivalents.
【原文标准名称】:动物和植物的脂肪和油.可可油和黑巧克力中的等量可可油.第2部分:等量可可油的量化
【标准号】:NFV03-150-2-2009
【标准状态】:现行
【国别】:法国
【发布日期】:2009-03-01
【实施或试行日期】:2009-03-04
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:黄油;化学分析和试验;巧克力糖;色谱法;可可;可可乳;可比性;对照值;定义;检测;等效性;脂肪;食品;食品检验;气相色谱法;实验室间试验;液相色谱法;量化;数量测定;抽样方法;试验;验证
【英文主题词】:Butter;Chemicalanalysisandtesting;Chocolate;Chromatography;Cocoa;Cocoabutter;Comparability;Comparisonvalue;Definition;Definitions;Detection;Equivalence;Fats;Foodproducts;Foodtesting;Gaschromatography;Inter-laboratorytests;Liquidchromatography;Quantification;Quantitativedetermination;Samplingmethods;Testing;Verification
【摘要】:
【中国标准分类号】:X14
【国际标准分类号】:67_190;67_200_10
【页数】:22P;A4
【正文语种】:其他


【英文标准名称】:Soilquality-Extractionoftraceelementsfromsoilusingammoniumnitratesolution
【原文标准名称】:土壤质量.使用硝酸铵溶液萃取土壤中微量元素
【标准号】:BSISO19730-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-03-31
【实施或试行日期】:2009-03-31
【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】:铵;硝酸铵;分析;化学分析和试验;化学试剂;土壤组分;萃取;调查;数学计算;矿质土壤;硝酸盐;盐溶液;土壤分析;土壤试验;土壤;试验;痕量元素分析;痕量元素;水常规
【英文主题词】:Ammonium;Ammoniumnitrates;Analysis;Chemicalanalysisandtesting;Chemicals;Compositionoftheground;Extraction;Investigations;Mathematicalcalculations;Mineralsoils;Nitrates;Salinesolutions;Soilanalysis;Soiltesting;Soils;Testing;Traceelementanalysis;Traceelements;Waterpractice
【摘要】:
【中国标准分类号】:B11
【国际标准分类号】:13_080_10
【页数】:22P;A4
【正文语种】:英语