1、BRITISH STANDARD BS EN 12280-3:2002 Rubber- or plastic-coated fabrics Accelerated ageing tests Part 3: Environmental ageing The European Standard EN 12280-3:2002 has the status of a British Standard ICS 59.080.40 BS EN 12280-3:2002 This British Standard, having been prepared under the direction of t
2、he Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 18 September 2002 BSI 18 September 2002 ISBN 0 580 40316 5 National foreword This British Standard is the official English language version of EN 12280
3、-3:2002. It supersedes clause 5 of BS 3424-12:1996 which is deleted by amendment. The UK participation in its preparation was entrusted to Technical Committee TCI/78, Coated fabrics, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to
4、its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electron
5、ic Catalogue or of British Standards Online. 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 does not of itself confer immunity from legal obligations. aid enquirers to unde
6、rstand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document compris
7、es a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EU
8、ROPISCHENORM EN122803 August2002 ICS59.080.40 Englishversion RubberorplasticcoatedfabricsAcceleratedageingtests Part3:Environmentalageing Supportstextilesrevtusdecaoutchoucoudeplastique EssaisdevieillissementacclrPartie3:Vieillissement dansunenvironnementractif MitKautschukoderKunststoffbeschichtete
9、Textilien BeschleunigteAlterungsprfungenTeil3: UmweltbezogeneAlterung ThisEuropeanStandardwasapprovedbyCENon17May2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelis
10、tsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguagean
11、dnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCO
12、MMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN122803:2002EEN122803:2002(E) 2 Contents page Foreword .3 Introductio
13、n 4 1 Scope5 2 Normativereferences5 3 Principle .5 4 Apparatus.5 5 Testspecimens .6 5.1 Selection 6 5.2 Dimensions 6 5.3 Quantity6 6 Procedure.6 7 Assessment .6 8 Calculationandexpressionofresults 6 9 Testreport. .7 AnnexA (informative) Examplesofphysicalproperties .8EN122803:2002(E) 3 Foreword This
14、documentEN122803:2002hasbeenpreparedbyTechnicalCommitteeCEN/TC248“Textiles andtextileproducts“,thesecretariatofwhichisheldbyBSI. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofan identicaltextorbyendorsement,atthelatestbyFebruary2003,andconflictingnationalstandards
15、 shallbewithdrawnatthelatestbyFebruary2003. ThisEuropeanStandard12280“RubberorplasticcoatedfabricsAcceleratedageingtests”consists ofthefollowingparts: Part1:Heatageing Part2:Physicalageing:effectoflightorweathering Part3:Environmentalageing Considerationisbeinggiventopreparingfurtherparts,tocoversuc
16、hprocessesasbiochemical ageing. ThisPartcontainsanannexAinformative. WARNING Personsusingthisstandardshouldbefamiliarwithnormallaboratorypractice. Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithits use.Itistheresponsibilityoftheusertoestablishappropriatesafetyandhealth
17、practicesand toensurecompliancewithanynationalregulatoryconditions. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthe followingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy
18、,Luxembourg,Malta, Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN122803:2002(E) 4 Introduction Ageingreferstoall“slowandirreversible“changesinthepropertiesofamaterialresultingfromits owninstability,orfromtheeffectsoftheenvironment.Thisalterationcanaffectthechemicalstructu
19、re ofthepolymersoradditives,thecompositionofthematerial,oritsphysicalcondition. NOTE Combustionisnotconsideredtobeanageingprocess,asthedeteriorationhappensveryrapidly. Acceleratedageingmethodsareusedasitispracticallyimpossibletoobtainexperimentalresults undernormalconditionsofutilisation. Thesemetho
20、dsinvolvesimulationswhichreproducethenormalconditionsofutilisationascloselyas possible,butwheretheparametersaresetsothatageingoccursmorerapidly. Thisstandarddealssolelywithacceleratedageingmethods.EN122803:2002(E) 5 1Scope ThisEuropeanStandarddescribesatestproceduretoassesstheeffectofhumidityincombi
21、nation withrelativelyhightemperaturesontherelevantphysicalpropertiesofcoatedfabrics. Itisapplicabletoallcoatedfabricsforwhichitisnecessarytoassessthelongtermresistanceto hydrolysiswhichcanresultfromexposuretowarmatmosphereswithhighmoisturecontent.Itisnot recommendedtoevaluatematerialsthatareimmersed
22、inwaterduringuse. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromother publications.Thesenormativereferencesarecitedattheappropriateplacesinthetext,andthe publicationsarelistedhereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofany ofthesepu
23、blicationsapplytothisEuropeanStandardonlywhenincorporatedbyamendmentor revision.Forundatedreferencesthelatesteditionofthepublicationreferredtoapplies(including amendments). ENISO2231,RubberorplasticscoatedfabricsStandardatmospheresforconditioningand testing(ISO2231:1989). ENISO22861,Rubberorplastics
24、coatedfabricsDeterminationofrollcharacteristics Part1:Methodsfordeterminationoflength,widthandnetmass(ISO22861:1998). 3Principle Testspecimensofcoatedfabricsareexposedforatleast1weektoanatmosphereofairhavingat least95%relativehumidityandatemperatureof70C.Selectedphysicalpropertiesaredetermined onune
25、xposedtestspecimensandonothertestspecimensafterexposure. NOTE Ifhighertemperaturesareused,forexampleforfasterqualitycontrol,theresultsshouldbeverified bycomparisonwiththisreferencemethod. 4Apparatus 4.1 Airovenequippedwithaventilatorcapableofprovidingair5timesto15timestheinternal volumeoftheovenperh
26、our. Theincomingairshallbeatthetemperaturespecifiedbeforecomingintocontactwiththetest specimens. NOTE Theairspeedatthethermometerandhygrometercontactshouldbenotlessthan3m s 1 . Nocopperorcopperalloyshallbewithintheageingchamberoftheoven.Thecapacityoftheair ovenshallbeofsuchasizethatthetotalvolumeoft
27、hetestspecimensdoesnotexceed10%ofthe freeairspaceoftheoven.Meansshallbeprovidedforsuspendingthetestspecimensvertically withintheovensuchthattheyarenotwithin10mmofeachothernorwithin50mmoftheinner surfacesoftheoven. Meansshallbeprovidedformaintainingthetemperatureoftheovenat(702)Corata temperatureothe
28、rwisespecified.EN122803:2002(E) 6 Anyelectricelementsusedforheatingtheincomingairshallbeshieldedtoavoiddirectradiationonto thetestspecimens. Donotinjectdirectlylivesteamattemperatureabove70Ctoachievetherequiredrelativehumidity oftheatmosphere. 4.2 Thermometerorothertemperatureindicatingdevicetorecor
29、dtheageingtemperature. 4.3 Wetanddrybulbhygrometer indicatingtherelativehumidity. 5 Testspecimens 5.1Selection Testspecimensshallbecutfromanareawithnofunctionalorvisibleflawsandshallbelocatedwithin thefulllengthofthecoatedfabricanditsusablewidthasdefinedinENISO22861. 5.2Dimensions Thedimensionsofthe
30、testspecimensshallbechosensothattheyaresuitablefortheteststobe subsequentlycarriedoutafterageing. 5.3Quantity Thenumberoftestspecimensselectedshallbeasrequiredbytheparticularphysicaltestsselected (seeclause7). 6Procedure Preheattheoventotheoperatingatmosphereof(702)Candatleast95%relativehumidity. Pl
31、acethetestspecimensintheovensothattheyarefreelyexposedtoaironallsidesandnot exposedtolight. Avoidsimultaneousageingofdifferenttypesofcompounds. After(1682)h(i.e.7days)or(3362)h(i.e.14days),ormultiplesthereof,removethetest specimensfromtheovenandconditionthemintheappropriateatmospherefromENISO2231for
32、at least24h. 7Assessment Comparethepropertiesoftheagedmaterialwithin2days,withthoseoftheunagedmaterialusing appropriatetestmethods,e.g.thoserelevanttothematerialspecificationortothecharacteristic underinvestigation. 8 Calculationandexpressionofresults Usingthemethod(s)identifiedinclause7,eithercalcu
33、latetheactualvalueoftestresultafterageing, orthepercentagechangewhencomparedagainsttheunagedmaterial.EN122803:2002(E) 7 9 Testreport Thetestreportshallincludethefollowing: a) referencetothisEuropeanStandard; b) thedateofthetest; c) theconditioningandtestingatmosphere; d) theidentificationofthecoated
34、fabric; e) theexposureperiod; f) thepropertiesmeasuredandtheresultsoftheassessmentconductedinaccordancewith clause7; g) detailsofanydeviationsfromthestandardtestprocedure.EN122803:2002(E) 8 AnnexA (informative) Examplesofphysicalproperties Thedifferentphysicalpropertiestestedcanbeforexample: DeMatti
35、aflexionresistance,accordingtoENISO7854; resistancetoshearflexingandrubbing,accordingtoENISO5981,(particularlymethod2, withoutthepressurefoot); coatingadhesion,accordingtoENISO2411; abrasionresistance(Martindaleapparatus)accordingtoEN ISO 1 29472,oraccording prEN54702.blankBS EN 12280-3:2002 BSI 389
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