ASTM D1601-1999(2004) 乙烯聚合物稀溶液粘度的标准试验方法

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【英文标准名称】:StandardTestMethodforDiluteSolutionViscosityofEthylenePolymers
【原文标准名称】:乙烯聚合物稀溶液粘度的标准试验方法
【标准号】:ASTMD1601-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:乙烯;高聚物;稀释;塑料;试验
【英文主题词】:dilutesolutionviscosity;ethylenepolymers;inherentviscosity(logarithmicviscositynumber);intrinsicviscosity(limitingviscositynumber);reducedviscosity(viscositynumber);relativeviscosity;specificviscosity;viscosityratio
【摘要】:Theknowledgeofdilutesolutionviscosityservesasanadditionaltoolincharacterizingethylenepolymers.Viscositydataalonemaybeoflimitedvalueinpredictingtheprocessingbehaviorofthepolymer.However,whenusedinconjunctionwithotherflowandphysicalpropertyvalues,thesolutionviscosityofethylenepolymersmaycontributetotheircharacterizations.Satisfactorycorrelationbetweensolutionviscosityandcertainotherpropertiesispossiblefrompolymersofasinglemanufacturingprocess.Thesolutionviscositytestisnotsensitivetosomemolecularconfigurationalpatternsthatmayoccuramongpolymersfromdifferentmanufacturingprocesses.Hence,itscorrelationwithotherpropertiesofpolymersproducedbydifferentprocesses,byevenonemanufacturer,maybelimited.Theviscosityofpolymersolutionsmaybedrasticallyaffectedbythepresenceofknownorunknownadditivesinthesample.Theuseofsolutionviscositymaybeofquestionablevaluewhereethylenepolymersareknownorsuspectedtocontaincolorants,carbonblack,lowmolecularweighthydrocarbons,fillers,orotheradditives.Themeasurementofdilutesolutionviscosityofethylenepolymerspresentsproblemsnotordinarilyencounteredinviscosimetry.Ethylenepolymersarenotsolubleatroomtemperatureinanyknownsolvent.Someofthehigherdensitymaterialsareinsolublebelow100x00B0;C.Extremecaremustbeexercisedintransferringthesolutiontotheviscometerforthetestifthecorrectsolutionconcentrationistobemaintained.Thistesthasnosignificanceunlessthesampleiscompletelysoluble.Thesolutionviscosityisafunctionoftheroot-mean-squaresizeofthepolymermoleculesinsolution.Itisknownthatthesolventselectedandthetemperatureofthedeterminationhaveaneffectontheroot-mean-squaresizeoftheparticles.Hence,whereaviscometer,solvent,ortemperatureotherthanspecifiedisused,datamaynotbecomparabletothatobtainedbythisprocedure.1.1Thistestmethodcoversthedeterminationofthedilutesolutionviscosityofethylenepolymersat135176;C.Itisapplicabletoareasonablywidespectrumofethylenepolymershavingdensitiesfrom0.910to0.970g/cm2.Directionsaregivenforthedeterminationofrelativeviscosity(viscosityratio),inherentviscosity(logarithmicviscositynumber),andintrinsicviscosity(limitingviscositynumber)(seeAppendixX4).1.2ThevaluesasstatedinSIunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThistestmethodistechnicallyequivalenttoISO1628-3.Note28212;AppendixX1-AppendixX3containmaterialfromthepreviousversionofTestMethodD1601andareincludedforinformationonly.
【中国标准分类号】:G63
【国际标准分类号】:83_080_20
【页数】:6P.;A4
【正文语种】: