F-2357–04-RCA纸带摩擦

Designation:F2357–04StandardTestMethodforDeterminingtheAbrasionResistanceofInksandCoatingsonMembraneSwitchesUsingtheNormanTool“RCA”Abrader1,2ThisstandardisissuedunderthefixeddesignationF2357;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribestheprocedureforsubjectinginksorcoatingsonmembraneswitchestoanabrasivemediumataspecifiedforce.1.2Withincertainlimitations,asdescribedinthisdocu-ment,thistestmethodisapplicableformaterialsincluding,butnotlimitedto:printedorcoatedpolyester,polycarbonate,andsiliconerubber.Thesamplescanbeeitherflatorcontoured.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3F2112TerminologyforMembraneSwitches3.Terminology3.1Definitions:3.1.1finalbreakthrough—thenumberofcyclesuntilcom-pleteremovalofthefirstsurfaceinkorcoatingbeingtested.3.1.2membraneswitch—amomentaryswitchingdeviceinwhichatleastonecontactison,ormadeof,aflexiblesubstrate.3.1.3wearlimit—intestingmembraneswitches,thenumberofcyclesuntilanunderlyinglayerofdifferentcolormaybeseenthroughthefirstlayer(notapplicablefortransparentcoatings).4.SignificanceandUse4.1MembraneSwitchkeysaresubjectedtorepeatedactua-tions,usuallybyahumanfinger.Theyarealsosubjectedtootherconditions(forexample,wiping,cleaning,rubbing)duringhandling,end-use,shipment,orstoragethatmaycauseabrasiondamage.Theresultmaybeasignificantremovalofthecoatings,textordecorativeinks.4.2Thistestmethodisapplicabletoawiderangeofmaterials.Themaincriterionisthattheabrasionprocessproducesvisiblewearorbreakthroughinthesurfacebeingtested.4.3Theamountofabrasiondamagetoasurfaceisdepen-dentonnumerousvariables.Thistestmethodprovidesawayofcomparingrelativeabrasionresistanceofinksandcoatings.Innowaydotheresultsprovideacorrelationvalueofthenumberofhumanfingertouchesbeforecoatingfailure.Itonlyprovidesameanstocompareresultsoftestsperformedusingthesameequipment,abrasivematerialsandloadingconditions.4.4Thetestmethodcanbeusedforqualitycontrolpur-poses,asaresearchanddevelopmenttool,toevaluatematerialcombinationsforagivenapplication,orforthecomparisonofmaterialswithrelativelysimilarproperties.5.Interferences5.1Inconsistentwearcanoccurwhichwillcompromisetheresults.Cautionisnecessarytoensurethemountingmethoddoesnotdeflectthespecimen,whichmayinfluencethewearcharacteristics.5.2Contouredsurfacescanbetestedbutresultsmaybemoredifficulttoduplicateandsomeequipmentisnotdesignedtotestnon-flatsurfaces.5.3Wheneverpossible,asmoothsurfaceispreferred.Extracareshouldbetakenwhenevaluatinganon-uniformsurface(thatis,roughsurface),andfortheusertorecognizepotentialvariationsbetweenspecimens.6.Apparatus6.1Machinecapableofprovidingcyclicorcontinuousabrasiontoatestspecimenundercontrolledloadingcondi-tions.6.2SuggestedSources:1ThistestmethodisunderthejurisdictionofASTMCommitteeF01onElectronicsandisthedirectresponsibilityofSubcommitteeF01.18onMembraneSwitches.CurrenteditionapprovedMarch1,2004.PublishedApril2004.2TheNormanTool“RCA”Abraderiscoveredbyapatent.Interestedpartiesareinvitedtosubmitinformationregardingtheidentificationofanalternative(s)tothispatenteditemtotheASTMInternationalHeadquarters.Yourcommentswillreceivecarefulconsiderationatameetingoftheresponsibletechnicalcommittee,whichyoumayattend.3ForreferencedASTMstandards,visittheASTMwebsite,@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.1Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.CopyrightASTMInternationalReproducedbyIHSunderlicensewithASTMNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--```,,`-`-`,,`,,`,`,,`---6.2.1NormanToolRCAAbrader.46.3SpecimenMountingFixtureorHolder,asuitabledeviceofsufficientstrengthandrigidityusedtosecurethespecimensothatitisheldrigidlyandperpendiculartotheloadduringtesting.6.4AbrasiveMedia,commonlyavailablefromNormanTool.6.4.10.6875in.widePaper,mostapplications.6.4.20.25in.widePolyesterTape,recommendedforspeci-menswithconcavesurfacesandfinegraphicdetails.7.Conditioning7.1AbrasiveMediaandSpecimenConditioning—Unlessotherwiseagreeduponbetweenpurchaserandseller,conditionthespecimensforatleast24hat2362°C(73.463.6°F)and50610%relativehumidity.7.2TestConditions—Conducttestsinthestandardlabora-toryatmosphereof2362°Cand50610%relativehumidity.8.Pre-TestSetup8.1Mountthetestspecimenonthemountingfixture.Thisholdingdeviceshouldfirmlyholdthetestspecimeninafixedposition,withoutdistortion,inaperpendicularpositionrelativetotheforceprobe.8.2CleaningofSpecimen—Specimensshallbecleanedinsuchawaythatthesurfaceisfreefromgrit,grease,fingerpr