ISO 01628-1-2021.docx

INTERNATIONA1.STANDARDISO1628-1editionFourth2021-02P1.asticsDeterminationoftheviscosityofpo1.ymersindi1.uteso1.utionusingcapi1.1.aryviscometers一MR里a1.princip1.esP1.asUques-Determinationde1.aviscositydespo1.ymeresenso1.utiondi1.uteaaidedeViscosimetresCapi1.1.airesPartie1:PrincipesgenerauxReferencenumberISO1628-1.:2021(E)COPYRIGHTPROTECTEDDOCUMENT©ISO2021岫rkdea/山thUcdOthcnviscjft<c三orrtmcehDVBiwixuioiti08phnn11UatiocBhr<1.>hotoc<>p)Mng,ptbcatonpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanherequestedfromeitherISOattheaddressbe1.owOr1.sOXSmemberbodyinthecountryoftherequester.%,tft晒Iandonnet8CH-1214*crnicr,GenevaPhone：M1.22749O1.11Pub1.ishedinSwitzerhnd3.2.3reducedviscosityviscositynumber=Note1toentry:,hcdimensionsofreducedviscosityarc1.aM".quotednumcrica1.Forpractica1.rcduccdsubmu1.tip1.e(ViscoSitynumber)usethesepractica1.convcnicntandthecommon1.y3.2.4 exceptinthecaseofpo1.ymersof1.owmo1.armass,forwhichhigherconcentrationsisnecessary.inherentviscosity1.ogarithmicviscositynumberNote2cxccptc11try:Theinhercntpo1.ymersofIowusua1.1.ydeterminedwhichConcentrationsthanncccssaryTe0.005r/3.2.5 intrinsicviscosity1.imitingviscositj,number1.1.口1.oM¢!0CNoteetTectusua1.1.yneg1.igib1.etheVa1.uesratethefunctionsviscosity,inherentviscosityandintrinsicneg1.ected,since3.2.6Kwa1.ue©ISO2021-A1.1.rightsreserved(normative)Itisessentia1.thata1.1.dust.ofintoorcontac1.within1.iquidundertestiscausefa1.sec1.ean,beobtained.fi1.ters,thetestrc1.eantheASuitab1.eanda1.1.OthermaybeusedAquaregia(3vo1.umesconcentratedhydroch1.oricacidand1vo1.umeconcentratednitricacid)mayberequiredtoremoveinorganicresiduesfromtheg1.assware,andasuitab1.eso1.ventmayherequiredtoremoveoi1.andgrease.Fo1.1.owingthis,drying1.asswiththeandthendeanwithspecia1.1.ypreparedchromic20.Formorethisso1.utionwarmthechromicacidgent1.yonawaterbath.ovenatachromicacidandrinse100orwith1.eastfivetimeswithwater.Dryinhasbeendisti1.1.ed,driedandfi1.tered,dryingtheapparatuswithas1.owstreamoffi1.tereddryairorrpreferab1.y,withavacuum1.ine.sha1.1.bec1.eanedbydrainingoftheefuxtimesofofsimi1.arso1.ventthehasbeendisti1.1.edandfi1.tered.Drytheapparatuswithas1.owstreamoffi1.tereddryairrwithavacuum1.inerorinane1.ectricovenatatemperaturenohigherthan1000C.Theeffectivenessofthec1.eaningcanbeifthenextso1.utiontobemeasuredisofapo1.ymerofthesametypeandofsimi1.arviscosity,itispermissib1.etodraintheviscometer,washitwiththenextso1.utiontobemeasuredandthen1.1.itwithaItisrecommendedthatviscometersusedforsi1.iconef1.uidsandf1.uorocarbonsbereservedexc1.usive1.yforusewiththesef1.uidsandthattheseviscometersbesubjecttoca1.ibrationchecksatfrequenteitherGreatCaresha1.1.So1.vent1.ossesbyevaporationandconcentrationerrorsdependontheparticu1.artestprocedureand13(informative)Guidanceisgiveninthisdocumwtonthedeterminationoftheviscometricpropertiesofpo1.ymersinwithbetterasdefinedinthan3.Theattainedinabso1.utethesepropertiesofusua1.1.ybemanyoftheinstrumenta1.errorsareapproximate1.ythesameforbothso1.ventandso1.ution,andareeffective1.ycance1.1.ed.There1.ativeviscosityandtheotherparametersdefinedinC1.ause3areca1.cu1.atedfromtheeff1.uxtimesofso1.utionandso1.ventTheTheeff1.uxtimestheforceofbegravity,throughtothecapi1.1.aryofasuspended-oftheuids(seeC1.ause4).Thisisequiva1.enttostatingthatthekineticenergyandothererrorsareneg1.igib1.eandthatthedensityoftheso1.ventdiffersneg1.igib1.yfromthedensityoftheso1.utions.Themostimportantsourcesoferrorincapi1.1.aryviscometryarere1.atedtob)capi1.1.aryendeffects,d) viscousheateffects,f) hydrostaticheadvariations,h) errorsinthemeasurementoftheconcentrationandeff1.uxtime,j)errorsintemperaturestabi1.ityandmeasurement,Fortunate1.y,mostoftheseeffectscanbeconsideredneg1.igib1.efortheproposedprocedures.Errorsduetosurfacetension,endeffectsanddrainageeffectsarequitesma1.1.intestswithorganis1.ventsintheareneg1.igib1.ewhenthere1.ativeviscometerisofbyareErrorsdue1.(.Viscousheatthevertica1.andvariationsinthehydrostaticheadareusua1.1.yverysma1.1.withthistypeofviscometer.havebetakenaccount.3n1.dso1.vcntbett)u<ht>1.aJbdw(u2¢ufttrabu'dbktuQ90idIdngNofSrik1.netineasuituqnradoh1.)j(so1.utions.Theeffectofshearratecanbeserious,sincepo1.ymerso1.utionsareoftennon-Newtonian(4,(sj.Strict1.y懈期时报琳eaM%enh嗨加即酷iedFortunateW吊战墟ar品翩/脾曲f三闻邸,蜘加esareverysma1.1.un1.essthemo1.armassofthepo1.ymerishig1.wrthan106gmo1.,whichse1.domhappenswithcommercia1.po1.ymers.Furthermore,itisimpractica1.totakeaccountofshearrateeffectsfor瓶BHiwSofdiMna痢三站搬Sh谢“ebetiF端恒achrcdb1.cdE田1.三酶nestestingthesamepo1.ymersamp1.e.IS而展圉椒用沏MatC艇吸Qb1.e斶Jortan蝴猴JitOfaPR眼幅ate临池如Cme枢由力rofoM俪瞅nergyUhbe1.ohdeviscometerhavingacapi1.1.arydiameterof0r58mm.Theresu1.tanterrorinthereducedviscositywi1.1.beofI1.ieorderof30%and,forspecia1.workoutsidethescopeofthisdocument,itmightSV½hfjW1.tf1.iHfifteraiWfitW!Mergyth