ISO 04624-2023.docx

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1、INTERNATIONA1.STANDARDISO4624editionFourth2023-06Paintsandvarnishes-Pu1.1.-offtestforadhesionPeinturesetvernis-EssaidetraciionISoRa西HO2跳到ISO2023COPYRIGHTPROTECTEDDOCUMENTISO2023IUirhM*hedbdi1.iUedotherwiseupdhi.o啪InyM1.tta0DmkfifiU81.andonnet8CH-1214Vernier,GenevaPhone：M1.227490111觥ftte:丽丽BQrgPub1.i

2、shedinSwitzer1.andISO2023-A1.1.rightsreservedPaintsandvarnishesPu1.1.-offtestforadhesion1 Scopesing1.ecoatingoramu1.ti-coatsystemofpainttvarnishorre1.atedproduct.methodA:usingtwodo1.1.ies,suitab1.efortestingbothrigidanddeformab1.esubstrates;methodC:usingdo1.1.ies,oneasapaintedsubstrate.differencesin

3、adhesion.construction.Ford1.stortionspedaipurposes,duringcoatingtensi1.eapp1.iedcommontotousefacesandwich2 Normativereferencesconstitutesrequirements1.atesteditiondocument.referencedreferences,(inc1.uc1.ingamendments)app1.ies.app1.ies.ISO1514,PaintsandvarnishesStandardpane1.sfortestingandgHngPointsa

4、ndvarnishesandtheirrawmateria1.sTemperaturesandhumiditiesforconditioningISOTermsanddefinitionsrawmateria1.sforpaintsandvarnishesSamp1.ingForthepurposesofthisdocument,thetermsanddefinitionsgiveninISO4618app1.y.ISOOn1.inebrowsingp1.atform:avai1.ab1.eat4ttp/WWWMFgGbP随划Um!HTW!E，IEThisdocumentspecifiesth

5、reemethodsfordeterminingtheadhesionbycarryingoutapu1.1.-offtestonaThesemethodsinc1.ude:methodB:testingfromonesideon1.y,usingasing1.edo1.1.y,suitab1.eforrigidsubstrateson1.y;Thesetestmethodshavebeenfoundusefu1.incomparingtheadhesionbehaviourofdifferentcoatings.Itismostusefu1.inprovidingre1.ativeratin

6、gsforaseriesofcoatedpane1.sexhibitingsignificantThetestcanbeapp1.iedusingawiderangeofsubstrates.Differentproceduresaregivenaccordingtowhetherthesubstrateisdeformab1.e,e.g.thinmeta1.rp1.asticsandwood,orrigid,e.g.thickconcreteandmeta1.p1.ates.Toavoidexamp1.e,forofthesubstratethethecanbetestritIsdirect

7、1.yt1.eoftestdo1.1.y.Thefo1.1.owingdocumentsarereferredtointhetextinsuchawaythatsomeora1.1.oftheircontentundatedreferences,theofthisoftheFordateddocumenton1.ytheanyeditioncitedForISO1513,PaintsandvarnishesExaminationandpreparationoftestsamp1.esISO2808,PaintsandvarnishesDeterminationoffi1.mthicknessI

8、SO3270,ISO4618,PaintsandvarnishesVocabu1.ary315528,Paints,varnishesISOandIECmaintaintermino1.ogydatabasesforuseinstandardizationatthefo1.1.owingaddresses：IECE1.ectropedia:avai1.ab1.eathttps:/www.e1.ectropedia.org/ISO2023-A1.1.rightsreservedIfthetestpieceistoo1.arge,useanareacutfromthecoatedsubstrate

9、(discofminimumdiameter30mmtoIhesquareofOf【woside30mm).Take()equa1.thetestP1.acethetestpiecebetweentheadhesive-coatedfacesofthedo1.1.iessuchthatthedo1.1.iesarecoaxia1.1.ydevice(in)thecentreoftestpiece,asaperiodequa1.theA1.ignthetestoftheinthespecia1.testsunderhigh1.yhumidconditions,thecuringtimeofthe

10、adhesivesha1.1.beasshortaspossib1.e,theuseoftwo-packquick-dryingepoxy-adhesiveispreferab1.einthesesituations.Attheendofthisperiod,carefu1.1.ythecuttingdevice(5.4)CUt(see).Theadhesionattheadhesive/coatinginterfacemaybeimprovedby1.ight1.yabradingthesurfaceoftheInthemethodfordeformab1.esubstrates,ifapo

11、oradhesivebondisexpectedbetweentheuncoatedfaceofthesubstrateandthedo1.1.y,coatbothhe管ofthesubstratewiththeproductundertest.Figure4TestononeorforsidesApp1.ytheadhesiveeven1.ytotheuncoated,fresh1.y-c1.eanedsurfaceofado1.1.y(5.2).P1.acetheadhesive-coatedfacetheAtinendofwiththecoating,fortheperiodto(5.4

12、)tocuttimeofcircumferenceofthedo1.1.ythroughtothesubstrate,un1.essOtherWiSespecifiedoragreed.9.5Measurement9.5.1 Breakingstrengthacrossadhesiontesttester(Withouttakingbendingmoment,do1.1.iesatensi1.estress,Increasingisatapp1.ieduniform1.yassemb1.ythepreparedstressrequiredtobreakthetestassemb1.y.Repe

13、atthepu1.1.-offtestforeachtest9.5.2Natureofthefracturefractureasfo1.1.ows：A/Bisadhesivefai1.urebetweensubstrateandfirstcoat;B/Cisadhesivefai1.urebetweenfirstandsecondcoats;34”n/mYiscohesivefai1.ureofadhesive;Estimatetheareaoffractureasapercentagetothenearest10%foreachtypeoffracture.usingCa1.cu1.atio

14、11nwreexpressionofresu1.ts10.1BreakingstrengthE(1)Immediate1.yafterth-perioda1.1.owedforthecuringoftheadhesive,p1.acethetestassemb1.yinthepu1.1.-offthearea,5.1),anycaretoa1.igntheApp1.ysothatthetensi1.eforceratenotgreaterthan1MPas,perpendicu1.artothep1.aneofthecoatedsubstratesuchthatfai1.ureofthetes

15、tassemb1.yoccurswithin90SOfinitia1.app1.icationofthestress.9Recordtensi1.e(see9.1).Visua1.1.yinspectthefracturesurfacestoestab1.ishthenatureofthefracture,andassessthetypeofAiscohesivefai1.ureofsubstrate;Biscohesivefai1.ureoffirstcoat;iscohesivefai1.ureofthenthcoatofamu1.1.icoatsystem;isadhesivefai1.

16、urebetweenthentcoatandthe加小coatofamu1.ticoatsystem;naY/Zisadhesivefai1.urebetweenadhesiveanddo1.1.y.Whereconsistencyofbondingfai1.ureisnotachieved,revigw-boUuheppationandapp1.icationofthecoating;forinconsistentfai1.ureoftheadhesive,seeC1.ause6and9.4.1.Repeattheseriesoftests101.eastsixandtestassemb1.

17、ies.Thebreakingstrength,inmegapasca1.s,foreachtestassemb1.yisgivenbyFormu1.a(1):whereisthebreakingforce,innewtons;istheareaofthedo1.1.y,insquaremi1.1.imetres.In4caseOffiibdiesefdiameter20mm,thebreakingstrength,inmegapasca1.s,isgivenbyFormu1.a(2).400314I/Ca1.cu1.atethemeanofa1.1.determinationstothene

18、arestwho1.enumber.Incaseofmorethanonemeasurement,expressthenumberOfnieasurements,themeanresu1.t,thehighestandthe1.owestresu1.t10.2Natureoffai1.ureB2艰旭曲电QI1.ieS他加匕出1&tt.exprSHjWi(thA3cstimatedmean10.3Examp1.eThepu1.1.-offtestresu1.tcanbeexpressedasfo1.1.ows:20MPa,30%B,70%B/CThismeansthat:-apaintsyste

19、mbreaksatameantensi1.estressof20MPa；examinationoftheareaoneachsideofthesiteofseparationrevea1.sameanOfapproximate1.y30%ofthedo1.1.yareaassociatedwithcohesivefai1.ureofthefirstcoat;70%ofthesecondcoats.do1.1.yareaassociatedwithintercoatresu1.tsinadhesivefai1.urebetweenthefirstand11 PrecisionNore1.evan

20、tprecisiondataarecurrent1.yavai1.ab1.e.IKMHItaWJhment(toauneiihdhou1.dthieaftUHd.inW1.irtifacoinc1.rca1.Sing1.ifCbatdxgOea1.ingnnitaktOa1.曲C1.1.KKi(SfMeasurementusedind) theadhesive(andmixingratios,ifapp1.icab1.e)andcuringconditions(seeC1.ause6);e) the1.engthoftimeandconditionsbetweenassemb1.yandtes

21、ting；f) thetypeofinstrumentandthediameterofthedo1.1.ywhichwasused;g) ifused,thetypeofcuttingtoo1.emp1.oyedtocutaroundthedo1.1.y;h) theresu1.tsofthetestrreportedasindicatedinC1.ause10;i) anydeviationsfromthetestmethodspecified;j) anyunusua1.features(anoma1.ies)observedduringthetest;k) thedateofthetest.Bib1.iography1ISO2409rPaintsandvarnishesCross-cuttestICS87.040