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1、BRITISH STANDARD BS EN 13523-20:2004 Coil coated metals Test methods Part 20: Foam adhesion The European Standard EN 13523-20:2004 has the status of a British Standard ICS 25.220.60 ? BS EN 13523-20:2004 This British Standard was published under the authority of the Standards Policy and Strategy Com
2、mittee on 25 November 2004 BSI 25 November 2004 ISBN 0 580 44865 7 National foreword This British Standard is the official English language version of EN 13523-20:2004. The UK participation in its preparation was entrusted to Technical Committee STI/27, Paint systems for metallic substrates, which h
3、as 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 under the section
4、entitled “International Standards Correspondence Index”, or by using the “Search” 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 application. Compl
5、iance 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; monitor related
6、 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. The BSI copyright notice displayed in this document indicates when the docume
7、nt was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-20 November 2004 ICS 25.220.60 English version Coil coated metals - Test methods - Part 20: Foam adhesion Tles prlaques - Mthodes dessais - Partie 20: Adhrence des
8、 mousses Bandbeschichtete Metalle - Prfverfahren - Teil 20: Haftfestigkeit von Schaum This European Standard was approved by CEN on 23 September 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status
9、 of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A ver
10、sion in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Esto
11、nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES K
12、OMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13523-20:2004: E EN 13523-20:2004 (E) 2 Foreword This document (EN 13523-20:2004) has been prepared by Tec
13、hnical Committee CEN/TC 139 “Paints and varnishes”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2005, and conflicting national standards shall be w
14、ithdrawn at the latest by May 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
15、 Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 13523-20:2004 (E) 3 1 Scope This part of EN 13523 describes a laboratory method for testing foam adhesion to an organic coating
16、 on a metallic substrate under dry and wet conditions. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (includ
17、ing any amendments) applies. EN 13523-0:2001, Coil coated metals Test methods Part 0: General introduction and list of test methods. 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13523-0:2001 apply. 4 Material 4.1 Foam Organic insulation material ob
18、tained by mixing specific components (for example polyol and isocyanate) and (industrially) applied between two sheets to obtain a sandwich panel. 5 Principle The foam adhesion is tested by pulling off the foam from the coil coated metal sheet. The test has only two possible results: “passed” or “fa
19、iled”. 6 Apparatus 6.1 General Ordinary laboratory apparatus and glassware, together with the following 6.2 Humidity cabinet Capable of being maintained at 100 % relative humidity at a temperature of (40 2) C. 7 Sampling See EN 13523-0. EN 13523-20:2004 (E) 4 8 Test specimens See EN 13523-0. 9 Proce
20、dure 9.1 Preparation Cut the samples of coated metal sheet into workable pieces. Mix the components of the foam together in a blender, according to the suppliers specification (for example 20 g polyol and 26 g isocyanate, during 10 s). Pour a small quantity of the mixture over the surface to be test
21、ed. As the mixture reacts immediately, the application of the mixture shall be done within 20 s after mixing, unless otherwise specified by the supplier. After the application, leave the samples under ambient conditions, for 30 min to 40 min or as otherwise specified, before testing as described bel
22、ow. 9.2 Adhesion testing 9.2.1 Dry adhesion 9.2.1.1 Pull off the polymerised foam (by hand) from one sample. 9.2.1.2 If at the coating/foam interface none of the original coating surface is revealed, a second sample shall be held at room temperature for 24 h. Pull off the polymerised foam (by hand)
23、from this sample. Lightly scrape the remaining foam layer with a knife. If this scraping cannot reveal the original coating, dry adhesion is reported as “passed”. 9.2.2 Wet adhesion 9.2.2.1 Put a sample prepared as described in 9.1 in boiling water for 1 h. After removal of excess water, pull off th
24、e foam (by hand). 9.2.2.2 If at the coating/foam interface none of the original coating surface is revealed after the boiling test, put a second sample as described in 9.1 in the humidity cabinet (100 % relative humidity at 40C) for 24 h. After removal of excess water, pull off the foam (by hand). I
25、f at the coating/foam interface none of the original coating surface is revealed, wet adhesion is reported as “passed”. 10 Expression of results The results shall be expressed either by “passed” if both dry and wet adhesion tests passed or by “failed” indicating at which step the adhesion test faile
26、d. 11 Precision No precision data are currently available. EN 13523-20:2004 (E) 5 12 Test report The test report shall contain at least the following information: a) all details necessary to identify the product tested; b) a reference to this part of EN 13523 (EN 13523-20); c) specification of the f
27、oam components; d) result of the test, as indicated in clause 9; e) any deviation from the test method specified; f) date of the test. EN 13523-20:2004 (E) 6 Bibliography EN 1396, Aluminium and aluminium alloys Coil coated sheet and strip for general applications Specifications. EN 10169-1, Continuo
28、usly organic coated (coil coated) steel flat products Part 1: General information (definitions, materials, tolerances, test methods). prEN 10169-2, Continuously organic coated (coil coated) steel flat products Part 2: Products for building exterior applications. EN 10169-3, Continuously organic coat
29、ed (coil coated) steel flat products Part 3: Products for building interior applications. blank BS EN 13523-20:2004 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
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