1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 28 November 2002, Uncontrolled Copy, (c) BSIBRITISH STANDARD AEROSPACE SERIES BS EN 2667-6:2001 Non-metallic materials Foaming structural adhesives Test methods Part 6: Determination of water absorption The European Standard E
2、N 2667-6:2001 has the status of a British Standard ICS 49.025.50 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 28 November 2002, Uncontrolled Copy, (c) BSIBS EN 2667-6:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy an
3、d Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 26 July 2002 BSI 26 July 2002 ISBN 0 580 40094 8 National foreword This British Standard is the official English language version of EN 2667-6:2001. The UK participation in its preparation was e
4、ntrusted to Technical Committee ACE/63, Aerospace structural adhesives, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications re
5、ferred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of
6、a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation,
7、 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 comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover.
8、The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 28 November 2002, Uncontrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPE
9、NNE EUROPISCHENORM EN26676 December2001 ICS49.025.50 Englishversion AerospaceseriesNonmetallicmaterialsFoamingstructural adhesivesTestmethodsPart6:Determinationofwater absorption SriearospatialeMatriauxnonmtalliquesAdhsifs structurauxexpansiblesMthodesdessaiPartie6: Dterminationdelabsorptiondeau Luf
10、tundRaumfahrtNichtmetallischeWerkstoffe StrukturelleExpansionsklebstoffePrfverfahrenTeil6: BestimmungderWasseraufnahme ThisEuropeanStandardwasapprovedbyCENon2May2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofa
11、nationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undert
12、heresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Swed
13、en,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN26676:2001E Licensed Copy:
14、 Wang Bin, ISO/Exchange China Standards Information Centre, 28 November 2002, Uncontrolled Copy, (c) BSIEN26676:2001(E) 2 Foreword ThisEuropeanStandardhasbeenpreparedbytheEuropeanAssociationofAerospaceManufacturers (AECMA). AfterinquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,th
15、isStandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyJune2002,andconflictingnationalstan
16、dardsshallbewithdrawnat thelatestbyJune2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands
17、,Norway,Portugal, Spain,Sweden,SwitzerlandandtheUnitedKingdom. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 28 November 2002, Uncontrolled Copy, (c) BSIEN26676:2001(E) 3 1 Scope Thisstandardspecifiesthetestmethodsfordeterminingthewaterabsorptionoffoamingstructuraladhesiv
18、es whenexposedtohighhumidityorimmersedinwater. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentst
19、oorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies. EN 26673 AerospaceseriesNonmetallicmaterialsFoamingstructuraladhesivefilmsTest methodsPart3:Expansionratioandvolatilec
20、ontent 1) 3 Principle Weighingoftestpiecesbeforeandafterexposuretoaspecifiedenvironment. 4 Apparatusandreagents Balanceaccurateto 1mg Oven,capableofmaintainingatemperatureof(110 3)Candof(50 3)C. Humiditycabinet,capableofmaintainingauniformtemperatureof(50 3)Candarelativehumidity of95%to100%. Contain
21、erwithdistilledwater Containerwithabsolutealcohol Desiccator Ancillaryitems,suchasknives,metaltemplates,polyesterorpolyvinylfluoricfilm,metalsupport material,measuringdevices,sandpaper. 1) PublishedasAECMAPrestandardatthedateofpublicationofthisstandard. Licensed Copy: Wang Bin, ISO/Exchange China St
22、andards Information Centre, 28 November 2002, Uncontrolled Copy, (c) BSIEN26676:2001(E) 4 5 Testpieces 5.1 Theyshallbecutfromcuredandexpandedtestsamples(seefigure1).Theedgesshallbe smoothandfreefromcracks.Ifnecessary,finishingshallbecarriedoutusingsandpaperoremeryclothor byroutering. Figure1Testpiec
23、e 5.2 Thethicknessistheaverageoffourcornermeasurements.Alldimensionsshallbemeasured to 0,2mm. 5.3 IftestpiecestoEN26673areusedforthedeterminationofwaterabsorption,thenareleasefilm shallbeusedbetweenthefoamingstructuraladhesivefilmandthesupportmaterial. 5.4 Thenumberoftestpiecesforeachtestmethodshall
24、bethree. 5.5 Weighthetestpiecesindividually(mass M 1i inmilligrammes=originalmass). 6 Conditioning Thetestpiecesshallbeconditionedfor24hintheovenatatemperatureof(110 3)C,cooledinthe desiccatorandimmediatelyweighed(mass M 2i inmilligrammes=massafterconditioning). Licensed Copy: Wang Bin, ISO/Exchange
25、 China Standards Information Centre, 28 November 2002, Uncontrolled Copy, (c) BSIEN26676:2001(E) 5 7 Testmethods 7.1 14daysimmersion Completelyimmersethetestpiecesinthecontainerwithdistilledwatermaintainedatatemperatureof (25 3)C.Attheendofthe14days,removethetestpiecesfromthewater,diptheminabsolutea
26、lcohol, drythemfor1mininthepreheatedovenatatemperatureof(50 3)C,cooltheminthedesiccatorand immediatelyweigh(mass M 3i inmilligrammes=wetmass). 7.2 14dayshumidity Exposethetestpiecesinthehumiditycabinetfor14daystoairat(50 3)Candrelativehumidityof95%to 100%.Attheendofthe14days,removethetestpiecesfromt
27、hecabinet,cooltheminthedesiccatorand immediatelyweigh(mass M 3i inmilligrammes=wetmass). 7.3 Reconditioning After7.1or7.2,reconditionthetestpiecesto6andimmediatelyweigh(mass M 4i inmilligrammes=mass afterreconditioning). If M 4i islowerthan M 2i ,thedifferenceshallbeconsideredaswatersolublematterlos
28、tduringthetest.Inthis casethewaterabsorptionvalueisthesumofthemassincreaseduringthetestandthemassofthewater solublematter(see8.4and8.5). If M 4i isnotlowerthan M 2i ,theadhesiveisconsideredashavingnowatersolublematter. 8 Expressionofresults 8.1 Themasslossduetoconditioning,expressedinpercentage,shal
29、lbecalculatedasfollows: massloss 100 = 1i 2i 1i M M M 8.2 Themassincreaseduetowaterabsorptionduringthetest,expressedinpercentage,shallbe calculatedasfollows: massincrease 100 = 2i 2i 3i M M M Theactualmassincreaseduringthetest,expressedinmilligrammesofwaterpercubiccentimeteroftest piece,shallbecalcu
30、latedasfollows: actualmassincrease 1i 2i 3i = V M M where: V 1i istheoriginalvolumeofthetestpieceincubiccentimeters,seefigure1and5.2. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 28 November 2002, Uncontrolled Copy, (c) BSIEN26676:2001(E) 6 8.3 Thesolublematterlostduring
31、thetest(see7.3),expressedinpercentage,shallbecalculatedas follows: solublematterlost 100 = 2i 4i 2i M M M Theactualmassofsolublematterlostduringthetest(see7.3),expressedinmilligrammesofwaterpercubic centimeteroftestpiece,shallbecalculatedasfollows: solublematterlost 1i 4i 2i = V M M 8.4 Thepercentag
32、eofwaterabsorptionduringthetestisthesumofthevaluesof8.2and8.3. 8.5 Theactualmassofwaterabsorbedduringthetestisthesumofthevaluesof8.2and8.3. 9 Testreport Itshallincludethefollowing: numberofthisstandard; completeidentificationofthefoamingadhesivematerialincludingthetype,manufacturer,dateof manufactur
33、e,batchnumber,materialstandardnumber,mixingprocedureoffoamingpasteadhesive, storageconditions,expansionratetoEN26673; curingconditionsincludingtheheatuprate,curingtimeandtemperature; dimensionsofthetestpiecesbeforeconditioning; test conditions; individualandmeanvalues(see8.1,8.2,8.3,8.4and8.5); anyo
34、bservationsconcerningthetestpiecessuchascrackingorchangeinappearance; anydeviationsfromthisstandard. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 28 November 2002, Uncontrolled Copy, (c) BSIblank Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 2
35、8 November 2002, Uncontrolled Copy, (c) BSIBS EN 2667-6:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It
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