1、BRITISH STANDARD BS EN ISO 14680-1:2006 BS 3900-A26:2006 Incorporating amendment no. 1 to BS 3900-A26:2000 (renumbers the BS as BS EN ISO 14680-1:2006) Paints and varnishes Determination of pigment content Part 1: Centrifuge method The European Standard EN ISO 14680-1:2006 has the status of a Britis
2、h Standard ICS 87.060.10 BS EN ISO 14680-1:2006 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 effect on 15 July 2000 BSI 2007 ISBN 0 580 36143 8 National
3、 foreword This British Standard was published by BSI. It is the UK implementation of EN ISO 14680-1:2006. It is identical with ISO 14680-1:2000. The UK participation in its preparation was entrusted to Technical Committee STI/10, Test methods for paints. A list of organizations represented on STI/10
4、 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 from legal obligations. Amendments issued since publicat
5、ion Amd. No. Date Comments 16873 28 February 2007 Renumbers the BS as BS EN ISO 14680-1:2006EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO146801 February2006 ICS87.060.10 EnglishVersion PaintsandvarnishesDeterminationofpigmentcontentPart 1:Centrifugemethod(ISO146801:2000) PeinturesetvernisDter
6、minationdelateneurenpigment Partie1:Mthodeparcentrifugation(ISO146801:2000) BeschichtungsstoffeBestimmungdesPigmentgehaltes Teil1:Zentrifugenverfahren(ISO146801:2000) ThisEuropeanStandardwasapprovedbyCENon16January2006. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatethe
7、conditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,Germ
8、an).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece
9、,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Romania, Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050
10、Brussels 2006CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO146801:2006:E Foreword According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries Finland, France, Germany, Greece, Hungary, Icel
11、and, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice EN ISO 14680-1:2006 The text of ISO 14680-1:2000 has been prepared by Technical Committee ISO/TC 35 “Paints
12、and varnishes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 14680-1:2006 by Technical Committee CEN/TC 139 “Paints and varnishes“, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either
13、 by publication of an identical text or by endorsement, at the latest by August 2006, and conflicting national standards shall be withdrawn at the latest by August 2006. are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, The text of ISO 14680-1
14、:2000 has been approved by CEN as EN ISO 14680-1:2006 without any modifications.Referencenumber ISO14680-1:2000(E) INTERNATIONAL STANDARD ISO 14680-1 Firstedition 2000-04-01 PaintsandvarnishesDeterminationof pigmentcontent Part1: Centrifugemethod Peintures et vernis Dtermination de la teneur en pigm
15、ent Partie 1: Mthode par centrifugation EN ISO 14680-1:2006ii iii Contents 1 Scope1 2 Normativereferences1 3 Termanddefinition.1 4 Principle2 5 Apparatus.2 6 Sampling.2 7 Procedure.2 8 Expressionofresults3 9 Precision.3 10 Testreport4 EN ISO 14680-1:2006iv Foreword ISO(theInternationalOrganizationfo
16、rStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Inte
17、rnationalorganizations,governmentalandnon-governmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,
18、Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. AttentionisdrawntothepossibilitythatsomeoftheelementsofthispartofISO14680maybethesubjectof patentri
19、ghts.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardISO14680-1waspreparedbyTechnicalCommitteeISO/TC35, Paints and varnishes, SubcommitteeSC9, General test methods for paints and varnishes. ISO14680consistsofthefollowingparts,underthegeneraltitle Paints and v
20、arnishes Determination of pigment content: Part 1: Centrifuge method Part 2: Ashing method Part 3: Filtration method EN ISO 14680-1:2006 1 PaintsandvarnishesDeterminationofpigmentcontent Part1: Centrifugemethod 1 Scope ThispartofISO14680isoneofaseriesofstandardsdealingwiththesamplingandtestingofpain
21、ts,varnishes andrelatedproducts. Itspecifiesamethodfordeterminingthepigmentcontentofpaintsinwhichthesolidsaresedimentedby centrifugation. Itisprimarilyintendedforcheckingthecompositionduringtheproductionofcoatingmaterialsandasan acceptancecheckforthecoatingmaterialuser.Difficultiesmaybeencounteredwh
22、enthemethodisappliedto coatingmaterialscontainingdyestuffs,carbonblack,veryfinelydividedsilicondioxideorveryfinelydivided titaniumdioxide.Itmaynotbesuitableforemulsionpaints. Thepigmentcontentofcoatingmaterialscanalsobedeterminedbyanashingmethod(seeISO14680-2)orbya filtrationmethod(seeISO14680-3). 2
23、 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsof thispartofISO14680.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthesepublications donotapply.However,partiestoagreementsbasedonthispartofISO14680areencouragedto
24、investigatethe possibilityofapplyingthemostrecenteditionsofthenormativedocumentsindicatedbelow.Forundated references,thelatesteditionofthenormativedocumentreferredtoapplies.MembersofISOandIECmaintain registersofcurrentlyvalidInternationalStandards. ISO1513:1992, Paints and varnishes Examination and
25、preparation of samples for testing. ISO15528: 1) , Paints, varnishes and raw materials for paints and varnishes Sampling. 3 Termanddefinition ForthepurposesofthispartofISO14680,thefollowingtermanddefinitionapply. 3.1 pigmentcontent,determinedbythecentrifugemethod theproportionbymassofsolidparticlesi
26、ntheproductundertestwhichisinsolubleinthesolventusedfor separationunderthespecifiedconditions NOTE Itincludespigments,extendersandothersolidconstituentsoftheproduct. 1)Tobepublished.(RevisionofISO842:1984andISO1512:1991) EN ISO 14680-1:20062 4Principle Afterdilutingatestportionoftheproductundertestw
27、ithsolvent,thesolidparticlesareseparatedoffbycentrifuge, driedandweighed.Thepigmentcontentisthencalculatedfromthemassofthesolidscomponentandthatofthe testportion. 5 Apparatus Ordinarylaboratoryapparatusandglassware,togetherwiththefollowing: 5.1 Laboratorycentrifuge,withanoperatingspeedsufficienttoen
28、surethatthepigmentseparatesfromthe binderandarelativecentrifugalaccelerationofabout250000(equivalentto25000g).Itshallbefittedwith balancedswivellingbucketswhichcanaccommodatesuitabletubesofe.g.50mlcapacity. 5.2 Centrifugetubes,withacapacityofe.g.50ml.Thesemaybemadeofstainlesssteel,thick-walledglass,
29、 PTFEorothersuitableinertmaterial. 5.3 Polished-ballstirrer,consistingofashaftoflengthabout150mmanddiameterabout5mmhaving,onone end,aballofdiameterabout12mm.Thestirrershallbemadeofasuitablematerialsuchasstainlesssteelor glass. 5.4 Dryingoven,withforcedventilation,capableofbeingmaintainedat(125 2)C.T
30、heairflowshallbe horizontal. WARNINGAtthetemperatureused,organicsolventcanformexplosivemixtureswithair.Itistherefore importantthatthesolventvapourconcentrationintheovenisnotallowedtoexceedavalueatwhichan explosioncouldoccur. Forrefereetests,ovensofthesamedesignshallbeusedbyallparties. 5.5 Analytical
31、balance,capableofweighingto0,001g. 5.6 Desiccator. 6 Sampling Takearepresentativesampleoftheproducttobetested,asdescribedinISO15528. Examineandprepareeachsamplefortesting,asdescribedinISO1513. 7 Procedure Carryoutthetestinduplicate. Weighaclean,drycentrifugetube(5.2)(m 0 )tothenearest0,01g.Intothisc
32、entrifugetubeweighoutaccuratelyto thenearest0,01gtheamountofsample(m 1 )indicatedinTable1.Selectasuitablesolventorsolventmixturefor thecoatingmaterialwithaslowaboilingpointaspossibleandaddtheamountindicatedinthetable.Forexample, forsolvent-solublepaintsusexylene,forwater-dilutablepaintsusebutylglyco
33、l.Stirthesamplewiththeballstirrer (5.3)untilthebinderhasdissolvedinthesolvent.Thenrinseanyresidueadheringtothestirrerquantitativelyinto thecentrifugetubeusingthesamesolvent,ensuringthatthetubeisfillednotmorethanfour-fifthsfull.Centrifuge untilthesolidparticleshavesedimentedoutandthesupernatantbinder
34、solutionisnearlyclear(thiswillusually takeabout20min). NOTE Itisnotalwayspossibletogetthesupernatantsolutionclearasthisdependsonthepigmentandthebindersystem. Difficultiesmaybeencounteredwithcoatingmaterialscontainingdyestuffs,carbonblack,veryfinelydividedsilicondioxideor veryfinelydividedtitaniumdio
35、xide. EN ISO 14680-1:2006 3 Afterdecantingthesupernatantsolution,resuspendthesolidparticlesatthebottomofthecentrifugetubeinthe samesolventasusedinthefirstcentrifugingoperation.Makeuptothemarkandcentrifugeforafurther20min, andthenproceedasforthefirstcentrifugingoperation.Repeatthisprocedureathirdand,
36、ifnecessary,afourth time. Afterthefinalcentrifugingoperation,drythetubecontainingthesedimentedsolidsat(125 2)Ctoconstant massinthedryingoven(5.4).Cooltoroomtemperatureinthedesiccator(5.6)andweighthetubecontainingthe residuetothenearest0,01g(m 2 ). Table1Testportionmassesandsolventvolumes Volumeofcen
37、trifugetube ml Massoftestportion g Approximatevolumeofsolvent ml 50 10 0,2 20 100 15 0,3 40 8 Expressionofresults Calculatethepigmentcontentasapercentagebymassusingthefollowingequation: Pigmentcontent= mm mm 20 10 100 where m 0 isthemass,ingrams,ofthecentrifugetube; m 1 isthemass,ingrams,ofthetestpo
38、rtionandcentrifugetube; m 2 isthemass,ingrams,oftheresidueandcentrifugetube. Ifthetworesults(duplicates)differbymorethan2%(relativetothemean),repeattheproceduredescribedin clause7. Calculatethemeanoftwovalidresults(replicates)andreportthetestresulttothenearest0,1%bymass. 9 Precision 9.1 General Thep
39、recisionofthemethoddependsonthepigmentcontentoftheproductundertest.Thefollowingvaluesapply toapigmentcontentofabout30%. 9.2 Repeatability,r Thevaluebelowwhichtheabsolutedifferencebetweentwosingletestresults,eachthemeanofduplicates, obtainedonidenticalmaterialbyoneoperatorinonelaboratorywithinashorti
40、ntervaloftimeusingthe standardizedtestmethodmaybeexpectedtoliewitha95%probabilityis2%. EN ISO 14680-1:20064 9.3 Reproducibility,R Thevaluebelowwhichtheabsolutedifferencebetweentwotestresults,eachthemeanofduplicates,obtainedon identicalmaterialbyoperatorsindifferentlaboratoriesusingthestandardizedtes
41、tmethodmaybeexpectedtolie witha95%probabilityis4%. 10Testreport Thetestreportshallcontainatleastthefollowinginformation: a) alldetailsnecessarytoidentifytheproducttested; b) areferencetothispartofISO14680(ISO14680-1); c) thesolventorsolventmixtureused; d) theresultofthetestasindicatedinclause8,inclu
42、dingtheindividualvaluesandthemeanvalue; e) anydeviationfromthetestmethodspecified; f) thedateofthetest. EN ISO 14680-1:2006blankBS EN ISO 14680-1:2006 BS 3900-A26:2006 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for prep
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