【英文标准名称】:StandardTestMethodforPolyurethaneRawMaterials:DeterminationofBasicityinPolyols,ExpressedasPercentNitrogen
【原文标准名称】:聚氨脂原材料的标准试验方法:可以表示为氮的百分量的多元醇中碱度的测定
【标准号】:ASTMD6979-2003
【标准状态】:现行
【国别】:
【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(ASTM)
【起草单位】:D20.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:alkalinity;polyols;polyurethane;rawmaterials;testmethod;titration;
【摘要】:Thistestmethodissuitableforqualitycontrol,asaspecificationtest,andforresearch.Theresultsaremeasuresofbatch-to-batchuniformityandmaybeusefulinestimatingreactivity.5.1.1Thepercentnitrogencanbeusedtocharacterizeapolyolorindicateamountsofcertaincomponentsinapolyolblend.5.1.2Itispermissibletoalsoexpresstheresultsinequivalentsofbasepergramofsample,ifdesired.1.1Thistestmethodmeasuresthebasicconstituentsinpolyolsthataresolubleinglacialaceticacidandreactivewithperchloricacid.Samplescontaining0.3-10%nitrogenhavebeenevaluatedbythismethod.Thistestmethodisapplicabletopolyetherpolyolsandpolyetherpolyolblendsthatareusedinurethanereactions.(SeeNote1.)1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnoequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_100
【页数】:3P.;A4
【正文语种】: