1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13523-20:2011Coil coated metals TestmethodsPart 20: Foam adhesionBS EN 13523-20:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1
2、3523-20:2011.It supersedes BS EN 13523-20:2004 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee STI/27, Paint systems for metallic substrates.A list of organizations represented on this committee can beobtained on request to its secretary.This publicatio
3、n does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2011ISBN 978 0 580 71643 0ICS 25.220.60Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard wa
4、s published under the authority of theStandards Policy and Strategy Committee on 31 December 2011.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 13523-20:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-20 December 2011 ICS 25.220.60 Supersedes EN 13523-20:2004Eng
5、lish Version Coil coated metals - Test methods - Part 20: Foam adhesion 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 t
6、o comply with the CEN/CENELEC Internal Regulations which stipulate 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-C
7、ENELEC Management Centre or to any CEN member. This European Standard 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
8、the same status as the official versions. CEN members are the national 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, Pol
9、and, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland 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
10、any means reserved worldwide for CEN national Members. Ref. No. EN 13523-20:2011: EBS EN 13523-20:2011EN 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.
11、1 Preparation . 69.2 Adhesion testing 69.2.1 Dry adhesion 69.2.2 Wet adhesion 610 Expression of results 611 Precision . 612 Test report 7Bibliography 8BS EN 13523-20:2011EN 13523-20:2011 (E) 3 Foreword This document (EN 13523-20:2011) has been prepared by Technical Committee CEN/TC 139 “Paints and v
12、arnishes”, 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 June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012. Att
13、ention is drawn to the possibility that some of the elements of this document may 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, con
14、sists of the following parts: Part 0: General introduction and list of test methods; 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
15、 (cupping test); Part 7: Resistance to cracking on bending (T-bend test); Part 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 scra
16、tching; Part 13: Resistance to accelerated ageing by the use of heat; Part 14: Chalking (Helmen method); Part 15: Metamerism; Part 16: Resistance to abrasion; Part 17: Adhesion of strippable films; BS EN 13523-20:2011EN 13523-20:2011 (E) 4 Part 18: Resistance to staining; Part 19: Panel design and m
17、ethod of atmospheric exposure testing; Part 20: Foam adhesion; Part 21: Evaluation 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: Resis
18、tance to humidity; Part 26: Resistance to condensation of water; Part 27: 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
19、is clarified. According to the CEN/CENELEC Internal Regulations, the national 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, Ic
20、eland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 13523-20:2011EN 13523-20:2011 (E) 5 1 Scope This European Standard describes a laboratory method for testing foam
21、adhesion to an organic coating 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 t
22、he referenced document (including 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.
23、Organic insulation material created by mixing polyols and isocyanates 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 manu
24、facture, the constituent liquids of the foam are mixed just prior to 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 s
25、heet. The test has only two possible results: “passed” or “failed”. 6 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. BS EN 13523-2
26、0:2011EN 13523-20:2011 (E) 6 8 Test specimens See EN 13523-0 for 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 ex
27、ample 20 g polyol and 26 g isocyanate, during 10 s). Pour a small 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
28、the samples under ambient conditions, for 30 min to 40 min or as 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 surf
29、ace is revealed, a second sample shall be held at room temperature 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
30、 “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 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
31、as described in 9.1 in the humidity cabinet (100 % relative humidity 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 re
32、sults shall be expressed either by “passed” if both dry and wet adhesion tests passed or by “failed” indicating at which step the adhesion test failed. 11 Precision No precision data are currently available. BS EN 13523-20:2011EN 13523-20:2011 (E) 7 12 Test report The test report shall contain at le
33、ast 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 foam components; d) result of the test, as indicated in clause 10; e) any deviation from the test method specified; f) date of the te
34、st. BS EN 13523-20:2011EN 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 This page deliberately left
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