1、February 2012 Translation by DIN-Sprachendienst.English price group 7No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 25.220.60!$ys“1868056www.din.deDDIN EN 13523-20Coil coated metals Test methods Part 20: Foam adhesionEnglish translation of DIN EN 13523-20:2012-02Bandbeschichtete Metalle Prfverfahren Teil 20: Haftfestigkeit von SchaumEnglische bersetzung von DIN EN 13523-20:2012-02Tles prlaques Mthodes dessai Pa
3、rtie 20: Adhrence des moussesTraduction anglaise de DIN EN 13523-20:2012-02SupersedesDIN EN 13523-20:2005-02www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1001.12 DIN EN 13523-20:2012-02 2 A comma is used as the decimal marker. Na
4、tional foreword This standard has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, Working Group WG 9 “Testing of coil coated metals” (both secretariats are held by DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Beschichtungsstof
5、fe und Beschichtungen (Coatings and Coating Materials Standards Committee), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. Amendments This standard differs from DIN EN 13523-20:2005-02 as follows: a) the description of the foam has been revised;
6、b) the description of the scraping tool has been rendered more precise. Previous editions DIN EN 13523-20: 2005-02 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-20 December 2011 ICS 25.220.60 Supersedes EN 13523-20:2004English Version Coil coated metals - Test methods - Part 20: Foam ad
7、hesion Tles prlaques - Mthodes dessai - Partie 20: Adhrence des mousses Bandbeschichtete Metalle - Prfverfahren - Teil 20: Haftfestigkeit von Schaum This European Standard was approved by CEN on 15 October 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulat
8、e the conditions for giving this European Standard the status 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 CEN-CENELEC Management Centre or to any CEN member. This European Stan
9、dard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the nat
10、ional standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switze
11、rland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. E
12、N 13523-20:2011: EEN 13523-20:2011 (E) 2 Contents Page Foreword 31 Scope 52 Normative references 53 Terms and definitions . 54 Material . 55 Principle 56 Apparatus . 57 Sampling . 58 Test specimens 69 Procedure . 69.1 Preparation . 69.2 Adhesion testing 69.2.1 Dry adhesion 69.2.2 Wet adhesion 610 Ex
13、pression of results 611 Precision . 612 Test report 7Bibliography 8DIN EN 13523-20:2012-02 EN 13523-20:2011 (E) 3 Foreword This document (EN 13523-20:2011) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, the secretariat of which is held by DIN. This European Standard shal
14、l be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012. Attention is drawn to the possibility that some of the elements of this document m
15、ay be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13523-20:2004. EN 13523, Coil coated metals Test methods, consists of the following parts: Part 0: General introduction and list of test met
16、hods; Part 1: Film thickness; Part 2: Specular gloss; Part 3: Colour difference - Instrumental comparison; Part 4: Pencil hardness; Part 5: Resistance to rapid deformation (impact test); Part 6: Adhesion after indentation (cupping test); Part 7: Resistance to cracking on bending (T-bend test); Part
17、8: Resistance to salt spray (fog); Part 9: Resistance to water immersion; Part 10: Resistance to fluorescent UV radiation and water condensation; Part 11: Resistance to solvents (rubbing test); Part 12: Resistance to scratching; Part 13: Resistance to accelerated ageing by the use of heat; Part 14:
18、Chalking (Helmen method); Part 15: Metamerism; Part 16: Resistance to abrasion; Part 17: Adhesion of strippable films; DIN EN 13523-20:2012-02 EN 13523-20:2011 (E) 4 Part 18: Resistance to staining; Part 19: Panel design and method of atmospheric exposure testing; Part 20: Foam adhesion; Part 21: Ev
19、aluation of outdoor exposed panels; Part 22: Colour difference - Visual comparison; Part 23: Colour stability in humid atmospheres containing sulfur dioxide; Part 24: Resistance to blocking and pressure marking; Part 25: Resistance to humidity; Part 26: Resistance to condensation of water; Part 27:
20、Resistance to humid poultice (Cataplasm test); Part 29: Resistance to environmental soiling (Dirt pick-up and striping). The main technical changes are: The description of the foam is updated; The description of scraping tool is clarified. According to the CEN/CENELEC Internal Regulations, the natio
21、nal standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
22、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 13523-20:2012-02 EN 13523-20:2011 (E) 5 1 Scope This European Standard describes a laboratory method for testing foam adhesion to an organic coating on a metallic substrate under dry and
23、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 (including any amendments) applies. EN 13523-0
24、: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 created by mixing polyols and isocyanates
25、 to make (for example) polyurethane (PUR) or polyisocyanurate (PIR) foams. Mixing and handling of foams shall be carried out in line with the foam manufacturers recommendations. NOTE In the industrial process of sandwich panel manufacture, the constituent liquids of the foam are mixed just prior to
26、application, which then expand rapidly to fill the gap between two outward facing sheets of coated metal, usually in a continuous process. 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 “failed”. 6
27、 Apparatus Ordinary laboratory apparatus and glassware, together with the following: 6.1 Humidity cabinet capable of being maintained at 100 % relative humidity at a temperature of (40 2) C. 7 Sampling See EN 13523-0. DIN EN 13523-20:2012-02 EN 13523-20:2011 (E) 6 8 Test specimens See EN 13523-0 for
28、 preparation and conditioning of test panels. 9 Procedure 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 smal
29、l quantity of the mixture over the surface to be tested. 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
30、 otherwise specified, before testing as described below. 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 temperatu
31、re for 24 h. Pull off the polymerised foam (by hand) from this sample. Lightly scrape the remaining foam layer with typically a blunt knife or finger nail. 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 d
32、escribed in 9.1 in boiling water for 1 h. After removal of excess water, pull off the 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 humi
33、dity at 40 C) for 24 h. After removal of excess water, pull off the foam (by hand). If 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
34、adhesion tests passed or by “failed” indicating at which step the adhesion test failed. 11 Precision No precision data are currently available. DIN EN 13523-20:2012-02 EN 13523-20:2011 (E) 7 12 Test report The test report shall contain at least the following information: a) all details necessary to
35、identify the product tested; b) a reference to this part of EN 13523 (EN 13523-20); c) specification of the foam components; d) result of the test, as indicated in clause 10; e) any deviation from the test method specified; f) date of the test. DIN EN 13523-20:2012-02 EN 13523-20:2011 (E) 8 Bibliography 1 EN 1396, Aluminium and aluminium alloys Coil coated sheet and strip for general applications Specifications 2 EN 10169, Continuously organic coated (coil coated) steel flat products Technical delivery conditions DIN EN 13523-20:2012-02
