ASTM B 821-1992 粒度分析用金属粉末和相关化合物的液体分散标准指南
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【英文标准名称】:StandardGuideforLiquidDispersionofMetalPowdersandRelatedCompoundsforParticleSizeAnalysis
【原文标准名称】:粒度分析用金属粉末和相关化合物的液体分散标准指南
【标准号】:ASTMB821-1992
【标准状态】:作废
【国别】:美国
【发布日期】:1992
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:粒径分析;金属粉末;分析;液体分散;金属粉末的液体分散;粒径分析-金属材料;粉末金属材料;分散;导则
【英文主题词】:
【摘要】:
【中国标准分类号】:H71
【国际标准分类号】:19_120
【页数】:3P;A4
【正文语种】:英语
MIL-HDBK-2084, DEPARTMENT OF DEFENSE HANDBOOK FOR MAINTAINABILITY OF AVIONICS AND ELECTRONIC SYSTEMS AND EQUIPMENT (31 JUL 1995) [SUPERSEDES MIL-STD-2084(AS)]., This standard covers the common maintainability design requirements to be used in military specifications for avionic and electronic systems and equipment.【英文标准名称】:StandardTestMethodforWaterinLiquidNavalStores
【原文标准名称】:液体松脂中水含量的标准试验方法
【标准号】:ASTMD890-1998(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:D01.34
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:azeotropic;coulometric,KarlFischer;moisture;navalstores;pineoil;talloil;terpenes;turpentine;water;Moistureanalysis--paints/relatedcoatings/materials;Watercontent--paints/relatedcoatings/materials;Dipentene;Iodine-pyridine-sulfurdioxi
【摘要】:Manynavalstoresproductscontainwaterasaresultoftheprocessesusedfortheirproduction.Typicallyrefinedproductssuchasterpenes,pineoil,talloilfattyacids,anddistilledtalloilcontainonlytracesofwater,butcrudetalloilmightcontain0.5to2.5%ofwater.AlthoughtheKarlFischerandcoulometricmethodsaremostapplicabletolowlevelsofmoisture,thesecanbeandareusedathigherlevels.Theazeotropicdistillationmethodisgenerallyusedathigherlevels.1.1Thesetestmethodscoverthequantitativedeterminationofdissolvedoroccludedwaterpresentinanyproportioninliquidnavalstores,suchasturpentine,pinene,dipentene,pineoil,talloil,andtalloilfattyacids.Threemethodsofmoisturetestingareincluded.TheKarlFishertitrationmethodisthepreferredmethodfortestingtalloil,TestMethodsD803.1.1.1TheKarlFischerTitrationmethodisbasedonthereactionbetweenwaterandacomplexreagentconsistingofiodine,sulfurdioxide,pyridine,andmethanol,wherebytheiodineisconvertedtoacolorlesscompound.Theappearanceofapersistentiodinecolorinthereactionmixtureindicatesthecompleteremovaloffreewaterbyreactionwiththereagent,andtheendpointmaybemeasuredcolorimetrically.Automatictitratorsfindthisendpointbytherestorationofacurrentstrengthwhentheresistanceprovidedbythepresenceofwateriseliminated.Amperometricautomatictitratorsfindthisendpointbydetectingthecurrentflowthatoccursoncewateriseliminated.1.1.2Thecoulometrictitrationmethoddetermineswatercontentbyelectronicintegrationofacurrentsufficienttogeneratethepreciseamountofiodinefromtherequiredreagenttoreactwiththewaterinthesample.1.1.3Theazeotropicmethodutilizestherelativelylowboilingpointofwater,ascomparedwithothersampleconstituents,inatolueneorxylenematrixsothatwateriscollectedinatrapandmeasured.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G50
【国际标准分类号】:87_060_30
【页数】:3P.;A4
【正文语种】:英语