1、BRITISH STANDARD BS EN ISO 11431:2002 Building construction Jointing products Determination of adhesion/cohesion properties of sealants after exposure to heat, water and artificial light through glass The European Standard EN ISO 11431:2002 has the status of a British Standard ICS 91.100.50 BS EN IS
2、O 11431:2002 This British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 30 September 2002 BSI 30 September 2002 ISBN 0 580 40483 8 Nati
3、onal foreword This British Standard is the official English language version of EN ISO 11431:2002. It is identical with ISO 11431:2002. It supersedes BS ISO 11431:1993 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/547, Sealants for building and con
4、struction, 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 referred to in this document may be found in the BSI Catalogue
5、under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Electronic 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 ap
6、plication. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed;
7、 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 ISO title page, the EN ISO foreword page, the ISO title page, pages ii and iii, a blank page, pages 1 to 6, an inside back cov
8、er 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 EUROPISCHENORM ENISO11431 August2002 ICS:91.100.50 Englishversion BuildingconstructionJointing
9、productsDeterminationof adhesion/cohesionpropertiesofsealantsafterexposuretoheat, waterandartificiallightthroughglass(ISO11431:2002) ConstructionimmobilireProduitspourjoints Dterminationdespropritsdadhsivit/cohsiondes masticsaprsexpositionlachaleur,leauetla lumireartificielletraversleverre(ISO11431:
10、2002) ThisEuropeanStandardwasapprovedbyCENon11July2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standards
11、maybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official ve
12、rsions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCH
13、ESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO11431:2002EForeword Thisdocument(ENISO11431:2002)hasbeenpreparedbyTechnicalCommitteeISO/TC59 “Buildingconstruction“incollaborati
14、onwithCMC. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublication ofanidenticaltextorbyendorsement,atthelatestbyFebruary2003,andconflictingnational standardsshallbewithdrawnatthelatestbyFebruary2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizat
15、ionsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium, CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy, Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,Switzerlandandthe UnitedKingdom. NOTEFROMCMC Theforewordissusceptibletobeamendedon
16、receptionoftheGerman languageversion.Theconfirmedoramendedforeword,andwhenappropriate,thenormative annexZAforthereferencestointernationalpublicationswiththeirrelevantEuropean publicationswillbecirculatedwiththeGermanversion. Endorsementnotice ThetextoftheInternationalStandardISO11431:2002hasbeenappr
17、ovedbyCENasa EuropeanStandardwithoutanymodifications. ENISO11431:2002 INTERNATIONAL STANDARD ISO 11431 Second edition 2002-08-15 Reference number ISO 11431:2002(E) Building construction Jointing products Determination of adhesion/cohesion properties of sealants after exposure to heat, water and arti
18、ficial light through glass Construction immobilire Produits pour joints Dtermination des proprits dadhsivit/cohsion des mastics aprs exposition la chaleur, leau et la lumire artificielle travers le verreENISO11431:2002 ii FDP dicslaimre This FDP fam elitnoc yt deddebme niayfep.seca In roccatiw ecnad
19、A hycilop gnisnecil sebod, thf sim eliarp eb ytnieiv ro dewb detu sllah ton eb tidesselnu de tt ehyfepseca hwich rae meil era deddebct desnetsni dna olat no delmoc ehtupre epfrromign tide ehti.gn In odaolnwt gnidihs file, rapticca setpe trehiet neh serilibisnopty fo ton fnirisebodA gnign ilop gnisne
20、cilcy. TI ehSO tneCrceS larteraita catpecon s illibaity it nihs aera. ebodA si t armedarak fo dAS ebotsysme Inroctarop.de teDailfo s tfos ehtware prtcudos t desuo crtaet ehFDP si ff eb nac elit ni dnuoG ehlarene Info talerive to tf eh;eli teh PDF-rctaerap noimateers weer tpof dezimior rptnii.gn vEre
21、c yaeeb sah ert nakt neo rusnet etah tf ehi elis tiusbaf elob esu ry ISO merebm seidob. In the kilnuley evtne ttah a borpmel talerign to ti f si,dnuo saelpfni erom teh tneCS larterceratai ta thserdda es igvne olebw. ENISO11431:2002 iii Foreword ISO (the International Organization for Standardization
22、) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be repr
23、esented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards ar
24、e drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a
25、 vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO11431 was prepared by Technical Committee ISO/TC59, Bu
26、ilding construction, Subcommittee SC 8, Jointing products. This second edition cancels and replaces the first edition (ISO 11431:1993), which has been technically revised. ENISO11431:2002 1 Building construction Jointing products Determination of adhesion/cohesion properties of sealants after exposu
27、re to heat, water and artificial light through glass 1 Scope This International Standard specifies a method for the determination of the adhesion/cohesion properties of sealants after cyclic exposure to heat and artificial light followed by a period of exposure to water at a defined temperature. NOT
28、E The cyclic exposure of the test specimens to water and to radiation and heat is meant to simulate the exposure of sealants in service to natural weather conditions. The acceleration factor in comparison with the real situation is unknown. The intention is not to receive durability data for the sea
29、lants under evaluation but to ensure a minimum performance in glazing applications. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to,
30、 or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of t
31、he normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 4892-1:1999, Plastics Methods of exposure to laboratory light sources Part 1: General guidance ISO 4892-2, Plastics Methods of exposure to laboratory light sources Par
32、t 2: Xenon-arc sources ISO 6927, Building construction Jointing products Sealants Vocabulary ISO 13640, Building construction Jointing products Specifications for test substrates CIE Publication No. 85:1989, Technical Report Solar spectral irradiance 3 Terms and definitions For the purposes of this
33、International Standard, the terms and definitions given in ISO 6927 apply. 4 Principle Specimens are prepared in which the sealant to be tested adheres to two parallel glass surfaces. After submitting the specimens to a cyclic exposure to artificial light at elevated temperature and to water, the sp
34、ecimens are extended to a defined width. After maintenance of the extension for a defined time, the specimens are examined for evidence of loss of adhesion or cohesion. ENISO11431:2002 2 5 Apparatus 5.1 Glass supports, for the preparation of specimens. For the definition of the glass, see ISO 13640.
35、 For each test specimen, two glass supports are required with a cross- section of dimensions as shown in Figure 1. T est substrates of other dimensions may be used, but the dimensions of the sealant bead and the area of adhesion shall be the same as those shown in Figure 1. The thickness of the glas
36、s shall be . 5.2 Spacers, for the preparation of the specimens, of cross-section , with anti-adherent surface (see Figure 1). If the spacers are made of material to which the sealant adheres, their surface should be made anti-adherent, e.g. by a thin wax coating or a polyethylene film. Dimensions in
37、 millimetres Key 1L i g h t 2 Glass supports 3S p a c e r s 4S e a l a n t Figure 1 Assembly for specimens and direction of light exposure 6mm 12 mm 12 mm ENISO11431:2002 3 5.3 Anti-adherent substrate, for the preparation of test specimens, e.g. a polyethylene (PE) film, preferably on the advice of
38、the sealant manufacturer. 5.4 Ventilated convection-type oven, capable of being maintained at for conditioning according to method B. 5.5 Container, for immersing specimens in demineralized or distilled water, for conditioning according to method B. 5.6 Test chamber with an artificial light source (
39、see 5.7), capable of exposure of the test specimens to radiation under dry conditions at a defined temperature, which is measured on a black standard thermometer. The test chamber shall be sufficiently ventilated to maintain the test temperature in the dry phase. The radiation is directed to the sur
40、face of one of the glass substrates (see Figure 1). If fully automated equipment is used, the exposure to water is accomplished in the same test chamber. This can be done either by immersion or by water spray. Demineralized water shall be used. Suitable equipment and test procedures for cyclic expos
41、ures with intermittent water spray are described in ISO 4892-1. If exposure to water is done outside the test chamber in a device where the test specimens are transferred manually, they shall be immersed in demineralized water at a defined temperature. Contamination of the water for immersion or spr
42、ay by-products leached out from the sealants shall be avoided. The recommended procedure is to test sealants of different chemical type separately and to use fresh water. If the water has to be recycled because of high consumption (e.g. in spraying), a sufficient exchange with clean water shall be m
43、aintained. 5.7 Artificial light source with suitable filters, for the simulation of the visible and ultraviolet part of daylight as defined in CIE Publication No. 85. The spectral distribution of radiation shall comply with the requirements outlined in ISO 4892-2 (method A). The irradiance at the su
44、rface of the test specimens between wavelengths andshall be . NOTE Light sources for the simulation of the global radiation at the surface of the earth are under development. The degree of approximation to the spectral distribution according to CIE Publication No. 85 depends on the type of lamp. Xen
45、on-arc lamps and special metal halide lamps with suitable filters are regarded as adequate. Since the intensity and the spectral distribution change during service, the instructions of the suppliers as to how often the lamps have to be changed should be observed. Lamps with a spectral distribution w
46、hich deviates from the natural light in parts of the spectrum, e.g. UV fluorescent lamps, may be used. The reference method, however, is based on lamps which represent the spectral distribution as defined in CIE Publication No. 85. 5.8 Black standard thermometer, which complies with the requirements
47、 outlined in 5.1.5 of ISO 4892-1:1999. Black-panel thermometers may also be used. Under given operating conditions they tend to indicate lower temperatures than the black standard thermometers. The temperature difference between the measurements will depend on the test temperature, but can be up to
48、. Readings shall only be taken after sufficient time has elapsed for the temperature to become steady. The temperature shall be controlled, e.g. by adjusting the air exchange rate. 5.9 Extension machine, with recording device, capable of extending the specimens at a rate of . 5.10 Spacers, with a width of or , to hold the specimens
