1、BRITISH STANDARD BS EN ISO 2884-1:2006 BS 3900-A7-1:2006 Incorporating amendment no. 1 to BS 3900-A7-1:2000 (renumbers the BS as BS EN ISO 2884-1:2006) Paints and varnishes Determination of viscosity using rotary viscometers Part 1: Cone-and-plate viscometer operated at a high rate of shear The Euro
2、pean Standard EN ISO 2884-1:2006 has the status of a British Standard ICS 87.040 BS EN ISO 2884-1:2006 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effe
3、ct on 15 January 2000 BSI 2007 ISBN 0 580 35856 9 National foreword This British Standard was published by BSI. It is the UK implementation of EN ISO 2884-1:2006. It is identical with ISO 2884-1:1999. The UK participation in its preparation was entrusted to Technical Committee STI/10, Test methods f
4、or paints. A list of organizations represented on STI/10 can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity
5、from legal obligations. Amendments issued since publication Amd. No. Date Comments 16865 28 February 2007 Renumbers the BS as BS EN ISO 2884-1:2006EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO28841 June2006 ICS87.040 EnglishVersion PaintsandvarnishesDeterminationofviscosityusingrotary viscome
6、tersPart1:Coneandplateviscometeroperatedata highrateofshear(ISO28841:1999) PeinturesetvernisDterminationdelaviscositau moyendeviscosimtresrotatifsPartie1:Viscosimtre cneetplateaufonctionnantgradientdevitessede cisaillementlev(ISO28841:1999) BeschichtungsstoffeBestimmungderViskosittmit Rotationsvisko
7、simeternTeil1:KegelPlatteViskosimeter beihohemGeschwindigkeitsgeflle(ISO28841:1999) ThisEuropeanStandardwasapprovedbyCENon18May2006. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalterati
8、on.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberinto
9、itsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Pol
10、and,Portugal, Romania, Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2006CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENn
11、ationalMembers. Ref.No.ENISO28841:2006:E Foreword The text of ISO 2884-1:1999 has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 2884-1:2006 by Technical Committee CEN/TC 139 “Paints
12、and varnishes“, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2006, and conflicting national standards shall be withdrawn at the latest by Decem
13、ber 2006. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
14、Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 2884-1:1999 has been approved by CEN as EN ISO 2884-1:2006 without any modifications. EN ISO 2884-1:2006A Refere
15、ncenumbe r ISO28841:1999 (E) INTERNATIONAL STANDARD ISO 28841 Firstedition 19991001 PaintsandvarnishesDetermination ofviscosityusingrotaryviscometers Part1: Coneandplateviscometeroperatedatahigh rateofshear PeinturesetvernisDterminationdelaviscositaumoyende viscosimtresrotatifs Partie1:Viscosimtrecn
16、eetplateaugradientdevitesselev EN ISO 2884-1:2006ii Foreword ISO (the InternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasu
17、bjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnongovernmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstand
18、ardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtoth ememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. In
19、ternationalStandardISO 28841waspreparedbyTechnicalCommitteeISO/TC 35,Paintsandvarnishes, SubcommitteeSC9, Generaltestmethodsforpaintsandvarnishes. Togetherwiththeotherparts(seebelow),thispartofISO 2884cancelsandreplacesISO 2884:1974,whichhas beentechnicallyrevised.Themainchangesare: a) onlyaconeandp
20、lateviscometerisnowspecified; b) theshearrateiswithinanarrowerrange. ISO 2884consistsofthefollowingparts,underthegeneraltitle PaintsandvarnishesDeterminationofviscosity usingrotaryviscometer s: Part1:Coneandplateviscometeroperatedatahighrateofshear Part2:Discorballviscometeroperatedatasinglespecifie
21、dspeed Part3:Discandspindleviscometeroperatedatdifferentspeeds Part4:Paddleviscometeroperatedatasinglespecifiedspeed AnnexAofthispartofISO2884isforinformationonly. EN ISO 2884-1:20061 PaintsandvarnishesDeterminationofviscosityusingrotary viscometers Part1: Coneandplateviscometeroperatedatahighrateof
22、shear 1Scope ThispartofISO2884isoneofaseriesdealingwiththesamplingandtestingofpaints,varnishesandrelated products. ItsupplementsISO2431:1993, PaintsandvarnishesDeterminationofflowtimebyuseofflowcups . Itspecifiesthegeneralproceduretobefollowedindeterminingthedynamicviscosity ofpaints,varnishesand re
23、latedproductsatarateofshearbetween9 000s 1 and12 000s 1 . Thevalueobtainedgivesinformationabouttheresistanceofferedbythematerialtobrushing,sprayingandroller coatingduringapplication. The method specified in this part of ISO 2884 is suitableforallpaintsandvarnisheswhethertheyareNewtonianin behaviouro
24、rnot.Materialscontainingdispersionsoflargeparticleswillproducespuriousresults. 2Normativereferences The following normativedocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsof this part ofISO 2884.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthesepublicat
25、ions, donotapply.However,partiestoagreementsbasedonthispartofISO 2884areencouragedtoinvestigatethe possibilityofapplyingthemostrecenteditionsofthenormativedocumentsindicate dbelow.MembersofISOand IECmaintainregistersofcurrentlyvalidInternationalStandards. ISO1513:1992, PaintsandvarnishesExaminationa
26、ndpreparationofsamplesfortesting. ISO15528: 1) , PaintsandvarnishesSampling. 3Apparatus 3.1 Viscometer, with coneandplat e geometry,workingatarateofshearbetween9 000s 1 and12 000s 1 .The actualapparatususedshallbeagreedbetweentheinterestedparties,andthedetails giveninthetestreport.A simpleapparatusf
27、orroutineuseisdescribedinannexA. 1)Tobepublished.(RevisionofISO842:1984andISO1512:1991) EN ISO 2884-1:20062 4Sampling Takearepresentativesampleoftheproducttobetested,asdescribedinISO 15528.Thenexaminethesample andprepareitfortesting,asdescribedinISO 1513.Ifthesamplehasatendencytosedimentorseparateon
28、 standing, stirituntilitishomogeneous,takingcarenottoincorporateairbubbles.Thesampleshallbefreeofany foreignmatterorlumps.Thevolumeofthesampleshallbesufficienttofillthegapbetweentheconeandplate. NOTE Samplescontaininglargeparticleswillproduceanomalousresultsandcancauseda magetotheinstru ment.For con
29、eandplat e viscometerswithtruncatedcones,thelargerparticlesinthesa mpleshouldbelessthanatenththesizeofthe gapbetweentheconeandtheplate. 5Checkingtheapparatus Checktheapparatusonaregularbasisinaccordancewithth emanufacturersrecommendationsandfrom experiencegainedintheuseoftheinstrument,comparingthere
30、sultsagainstthos efrompreviouschecksand henceestablishingthefrequencyofcheckingrequired.Checkbycarryingoutthedeterminationasoutlinedin clause7,usingstandardrefinedmineraloilshavingNewtoniancharacteristicsandknownviscosities(usethree mineraloilswithviscositiescertifiedbyanapprovedlaboratoryandlyingbe
31、tween0,0 5 Pa sand0, 5 Pa s).Check theconesregularlyforwearandreplacethemiftheyshowsignsofscoringor,for conesthatarenottruncated, signsofflattening. Ifthereadingsobtaineddifferfromtheknownviscositiesofthestandar d oils by more than 5 %, the apparatus shall becheckedbyacompetentinstrumentengineerorre
32、turnedtothemanufacturerforadjustment. NOTE Siliconeoilsshouldpreferablybeavoidedbecauseoftheirtendenc y to contaminate instruments and because of the possibilityofshearthinningbehaviourathighshearrates. 6Checkingthetemperaturecontrol Tocheckthatthetemperaturedoesnotchangeduringthedetermination,carry
33、outthedeterminationasoutline d in clause7withthestandardoilofthehighestviscosityasindicatedbythescalereading. Allowtheviscometertorunwiththisoilfor 5 min,afterwhic hthereadingshallnothavedecreasedbymorethan 10 %.Ifthedecreaseismorethan1 0 %,theapparatusisunsuitable,assetup,forthedeterminatio n of vi
34、scosities athighratesofshearinaccordancewiththispartofISO2884. 7Procedure 7.1 Carry out thefollowingsequenceofoperationsinduplicateimmediatelyafterthepreparationofthesamplein accordancewithclaus e4,firstallowingtheapparatustowarmupi naccordancewiththemanufacturers instructions. Whentheviscositiesofp
35、roductsarebeingcompared,therateofshearshallbethesame.Th edeterminationshall becarriedoutat(23 0,2)Cunlessotherwiseagreed. 7.2 Adjustthetemperatureofthestationarypartoftheviscometerto(2 3 0,2) Cortoanalternativelyagreed temperature.Transferasuitableamountoftheproducttob e tested to the appropriate pa
36、rt of the viscometer, taking caretoavoidtheinclusionofairbubbles,andadjusttheotherparttothecorrectposition.Waitfortheprescribed time,dependentontheapparatusused,toallowthesampletoattaintheagreedtemperature. 7.3 Starttherotorandrecordthereadingonthescalewhenthereadingbecomessteady.Ifthereadin gdoesno
37、t becomesteadyafter15s,thereadingat15sshallberecordedandthelackofaconstantreadingshallbe mentionedinthetestreport. 7.4 Ifthereadingdoesnotdirectlyindicatetheviscosity,multiplythereadingbytheappropriateconversionfactor oruseanappropriatecalibrationcurvetoobtaintheviscosity. EN ISO 2884-1:20063 8Clean
38、ingtheapparatus Cleanthestatorandrotorcarefullyaftereachdetermination,employingasuitablesolvent.Theproceduretobe usedwilldependontheapparatus,butcareshallbetakent oremoveallofthetestmaterialandcleaningsolvent. Cleaningutensilswhichmaydamagetheapparatusshallnotbeused.Metalcleaningtoolsshallneverbeuse
39、d. 9Precision Theresultsoftwodeterminationswiththesameapparatustakenshortlyafteroneother inthesamelaboratoryby thesameoperatorshallnotdifferbymorethan5%oftheirmean. 10Testreport Thetestreportshallcontainatleastthefollowinginformation: a) alldetailsnecessarytoidentifytheproducttested; b) areferenceto
40、thispartofISO2884(ISO28841); c) thetypeofapparatusused,statingtheangleanddiameterofthecone; d) theshearrateused; e) thetemperatureused; f) thetestresultsinPa sormPa s; g) anydeviationfromthetestproceduredescribed,andwhetheragreedornot; h) thedateofthetest. EN ISO 2884-1:20064 AnnexA (informative) Co
41、neandplateviscometers A.1Descriptionofasimpleconeandplateviscometerforroutineuse Coneandplateviscometerscompriseasuitableelectricmotorthatdrives,ataconstantrotationalspeed ,a cone whosevertextouchesarigidtemperaturecontrolledplate.Thetorqueismeasuredeitherelectronicallyor mechanically.Coneandplatevi
42、scometersarewidelyusedforroutin ehighshearviscositymeasurements.The geometryisshowninFigureA.1. Theinstrumentisdesignedsothattheconeandmotorassemblycanbeeasilyraised,firstwhilethetestliquidis beingplacedontheplateandlatertopermitthoroughcleaningaftereachmeasurement. Inuse,theliquidjustfillsthenarrow
43、gapbetweentheplateandthecone. ThemaincharacteristicsaredescribedinTableA.1. Dimensionsinmillimetres FigureA.1Coneandplategeometry TableA.1Viscometercharacteristics Characteristic Viscosityrange 0to1Pa s(0to10P) Rotationalspeed (750 10)rpm Conediameter Dependentonspeed,angleandtorqueselected (typically24mm) Coneangle 0,5 2producesashearrateof9 000s 1 Shearrate(calculated) 9000
