ASTM D 4670-1992 聚氨酯原材料的试验方法:多元醇中悬浮物的测定
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来源:标准资料网
【英文标准名称】:TestMethodforPolyurethaneRawMaterials:DeterminationofSuspendedMatterinPolyols
【原文标准名称】:聚氨酯原材料的试验方法:多元醇中悬浮物的测定
【标准号】:ASTMD4670-1992
【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】:醇;塑料;试验;聚氨酯
【英文主题词】:alcohol;plastics;testing;polyurethane
【摘要】:
【中国标准分类号】:G31
【国际标准分类号】:71_080_60
【页数】:1P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminationofIodineValueofTallOilFattyAcids
【原文标准名称】:妥尔油脂肪酸碘值测定的标准试验方法
【标准号】:ASTMD5768-2002(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:iodinevalue;talloilfattyacids;Unsaturation;WIJSprocedure(iodinevalue);Fattyacids--tests;Iodinevalue;Talloilfattyacids
【摘要】:Theiodinevalueofafattyacidproductisameasureoftheunsaturatedfattyacidcontentofthatproductandconsequentlyameasureoftheeaseofoxidationordryingcapacityofthatfattyacidproduct.Thistestmethodmeasurestheunsaturationasiodinevaluebyadditionofaniodine/chlorinereagent.Theamountofreagentabsorbedisdeterminedbybacktitratingtheexcessreagentandcomparingittoablankdetermination.Insamplescontainingconjugateddoublebonds,theiodinevalueobtainedisempiricalsincethereagentdoesnotreactstoichiometricallywithconjugatedunsaturation.Wherenoconjugationispresent,theiodinevalueobtainedisameasureofthetotalunsaturation.Byusingproperspecimenweights,theempiricalvaluesobtainedareusefulforcomparativepurposes.Thistestmethodwasdevelopedinordertoreplacethehazardoussolvent,carbontetrachloride,usedinTestMethodD1959withthelesshazardousandmoreavailablesolvents,iso-octaneandcyclohexane.Asdataonthesatisfactoryuseofothersolventsbecomesavailable,thistestmethodwillbeamendedtoincludethosesolvents.Thistestmethodshouldhaveapplicabilitytofattyacidsandoilsotherthantalloilfattyacidbutthatpossibilityhasnotbeeninvestigated.1.1ThistestmethodcoverstheWijsprocedurefordeterminationofunsaturation(iodinevalue)oftalloilfattyacids.1.2Iodinevalueisameasureoftheunsaturationofoilsandfattyacidsandisexpressedintermsofthenumberofcentigramsofiodinepergramofsample(weightpercentofabsorbediodine).1.3Whenthistestmethodisusedtodeterminetheiodinevalueoffattyacidshavingconjugatedsystems,theresultisnotameasureoftotalunsaturated,butratherisanempiricalvaluethataffordsacomparisonofunsaturation.TotalunsaturationofconjugatedsystemsmaybemeasuredinaccordancewithTestMethodD1541.1.4Thetestmethoddescribedhereisnotreliablefortalloilfattyacidscontaininganappreciablequantityofrosin.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G52
【国际标准分类号】:87_060_20
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:Founding-Greycastirons.
【原文标准名称】:铸造.灰口铸铁
【标准号】:NFA32-101-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-12-01
【实施或试行日期】:2011-12-30
【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】:
【英文主题词】:Alloy-treated;Brinellhardness;Castingconstitution;Castings;Cast-iron;Definitions;Foundries;Foundrypractice;Graphite;Greycast-iron;Hardness;Inspection;Lamellargraphite;Mechanicalproperties;Metals;Properties;Rigidity;Specification(approval);Strengthofmaterials;Tensilestrength;Tensiletesting;Testing;Unalloyedcast-iron;Wallthicknesses
【摘要】:
【中国标准分类号】:J31
【国际标准分类号】:77_080_10
【页数】:31P;A4
【正文语种】:其他
