1、BSI Standards PublicationBS EN 13523-23:2015Coil coated metals TestmethodsPart 23: Resistance to humid atmospherescontaining sulfur dioxideBS EN 13523-23:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 13523-23:2015.It supersedes BS EN 13523-23:2002 which i
2、s withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee STI/21, Paint systems and surface preparation for metallicsubstrates.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include a
3、ll the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 84651 9ICS 17.180.20; 25.220.60Compliance with a British Standard cannot confer immunity fromlegal obligations.This
4、 British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2015.Amendments issued since publicationDate Text affectedBS EN 13523-23:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-23 July 2015 ICS 17.180.20; 25.220.60 Supersedes EN 135
5、23-23:2002English Version Coil coated metals - Test methods - Part 23: Resistance to humid atmospheres containing sulfur dioxide Tles prlaques - Mthodes dessai - Partie 23 : Rsistance des atmosphres humides contenant du dioxyde de soufre Bandbeschichtete Metalle - Prfverfahren - Teil 23: Bestndigkei
6、t gegen feuchte, Schwefeldioxid enthaltende Atmosphren This European Standard was approved by CEN on 27 May 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any a
7、lteration. 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 Standard exists in three official versions (English, French, German). A version in any other language
8、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 national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Es
9、tonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR ST
10、ANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13523-23:2015 EBS EN 13523-23:2015EN
11、13523-23:2015 (E) 2 Contents Page European foreword .3 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms and definitions .6 4 Principle 6 5 Apparatus .6 6 Sampling .7 7 Test specimens 7 8 Procedure .7 9 Expression of results 8 10 Precision .8 11 Test report 8 Bibliography 9 BS EN 13523-23:2
12、015EN 13523-23:2015 (E) 3 European foreword This document (EN 13523-23:2015) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, the secretariat of which is held by DIN. This document supersedes EN 13523-23:2002. This European Standard shall be given the status of a national
13、standard, either by publication of an identical text or by endorsement, at the latest by January 2016, and conflicting national standards shall be withdrawn at the latest by January 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent ri
14、ghts. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. The main technical changes are: a) the title and scope was changed from colour stability to resistance; b) the assessment of changes was added in Clause 8. EN 13523, Coil coated metals Test methods,
15、 consists of the following parts: Part 0: General introduction Part 1: Film thickness Part 2: 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
16、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 scratching Part 13: Resistance to accelerated ag
17、eing by the use of heat Part 14: Chalking (Helmen method) Part 15: Metamerism Part 16: Resistance to abrasion BS EN 13523-23:2015EN 13523-23:2015 (E) 4 Part 17: Adhesion of strippable films Part 18: Resistance to staining Part 19: Panel design and method of atmospheric exposure testing Part 20: Foam
18、 adhesion Part 21: Evaluation of outdoor exposed panels Part 22: Colour difference Visual comparison Part 23: Resistance to 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 Pa
19、rt 27: Resistance to humid poultice (Cataplasm test) Part 29: Resistance to environmental soiling (Dirt pick-up and striping) According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Bel
20、gium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switz
21、erland, Turkey and the United Kingdom. BS EN 13523-23:2015EN 13523-23:2015 (E) 5 Introduction Previous work by the European Coil Coating Association (ECCA) has established that this test method is not a reliable or reproducible test for assessing the degree of corrosion on coil coated products, but
22、that the test method may be used to evaluate the colour fastness of coil coated products. The procedure has been aligned with EN ISO 3231, except for the amount of sulfur dioxide. BS EN 13523-23:2015EN 13523-23:2015 (E) 6 1 Scope This part of EN 13523 defines terms of the procedure for determining t
23、he resistance of an organic coating on a metallic substrate to humid atmospheres containing sulfur dioxide. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the editi
24、on cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13523-0, Coil coated metals - Test methods - Part 0: General introduction EN 13523-3, Coil coated metals - Test methods - Part 3: Colour difference - Instrumental comparison
25、 EN 13523-22, Coil coated metals - Test methods - Part 22: Colour difference - Visual comparison EN 23270, Paints and varnishes and their raw materials - Temperatures and humidities for conditioning and testing (ISO 3270) 3 Terms and definitions For the purposes of this document, the terms and defin
26、itions given in EN 13523-0 apply. 4 Principle Test specimens are exposed to an atmosphere containing sulfur dioxide. The degree of colour change is measured or visually assessed. The degree of other types of degradation, e.g. spotting, streaking, loss of gloss, of the test specimen may also be asses
27、sed. 5 Apparatus An apparatus consisting of an airtight cabinet of capacity (300 10) l, in the base of which is a water-tight trough fitted with a means of heating the water so that it can raise the air temperature in the cabinet to (40 3) C in about 1 h and maintain this temperature for a total per
28、iod of 8 h from the commencement of the test cycle. The dimensions and design of the cabinet are not critical provided the stand for supporting the test panels is made of, or coated with an inert material and is of sufficient size to accommodate test specimens with a total surface area of (0,5 0,1)
29、m2. The cabinet shall also be constructed of an inert material and have a roof which prevents condensed moisture dripping onto the test specimens. The cabinet shall be provided with a means of relieving excess pressure and a gas inlet pipe which shall be situated immediately above the water trough.
30、A gas cylinder or gas generating apparatus fitted with appropriate regulating and measuring apparatus to ensure the supply of the correct volume of sulfur dioxide. The cabinet shall also be provided with a means of controlling the temperature which shall be measured in the space above the test speci
31、mens. NOTE Some typical designs of apparatus are shown in EN ISO 3231:1997, Figures 1 and 2. BS EN 13523-23:2015EN 13523-23:2015 (E) 7 6 Sampling See EN 13523-0. 7 Test specimens See EN 13523-0. The test specimens shall be nominally 150 mm 100 mm, unless otherwise specified or agreed. The reverse fa
32、ce and edges of the panel shall be coated with a suitable protective material such as a lacquer or adhesive tape to prevent attack by the sulfur dioxide. 8 Procedure Condition the test specimens for at least 24 h under ambient conditions of temperature and humidity. If required, for instance in case
33、 of dispute, conditioning shall be carried out at (23 2) C and a relative humidity of (50 5) %, in accordance with EN 23270. During this conditioning, the test specimens shall not be exposed to direct sunlight. After conditioning, carry out the test procedure as soon as possible. Set-up the testing
34、apparatus (Clause 5) in an environment protected from draughts and direct sunlight. Arrange the test specimens vertically in the test apparatus so that they are at least 100 mm from any wall or cover, at least 20 mm from each other and so that the lower edges of the specimens are at least 200 mm abo
35、ve the water. Where possible, arrange the test specimens at the same level for comparative tests. Care shall be taken to ensure that water condensed on upper specimens does not drip onto the lower specimens. As the same volume of sulfur dioxide is introduced at each test cycle, the total surface are
36、a of the test specimens in the cabinet is important. For comparative tests, the total test specimen area in the cabinet should be the same. Fill the trough with (2,0 0,2) l of distilled or deionised water. Prior to each test cycle, drain and renew this distilled or deionised water. After closing the
37、 apparatus, introduce (2,0 0,2) l of sulfur dioxide into the test cabinet, switch on the heating appliance and raise the air temperature to (40 3) C in about 1 h. Maintain this temperature for a total period of 8 h from the commencement of the test cycle. At the end of this period, switch off the he
38、ating appliance and ensure the chamber is fully purged. Open the door completely or raise the hood of the apparatus to at least the height of the upper edges of the test specimens. Leave the test specimens in the cabinet for a further 16 h. This constitutes one test cycle. Start a new cycle by chang
39、ing the water and introducing fresh sulfur dioxide. Repeat for a total of 5 test cycles. Cycles shall be continuous and without interruption. At the end of 5 test cycles, remove the test specimens from the cabinet, wash with clean water, blot with absorbent paper and immediately examine the whole te
40、st surface of each specimen for colour change using EN 13523-3 or EN 13523-22. Measure or assess visually the degree of colour change. The degree of other types of degradation, e.g. spotting, streaking, loss of gloss, of the test specimen may also be assessed. BS EN 13523-23:2015EN 13523-23:2015 (E)
41、 8 9 Expression of results Express the result as the mean of the measurements taken or the visual difference in colour. If specified, report observations on spotting, streaking, loss of gloss and any other degradation effects. 10 Precision No precision data are currently available. 11 Test report Th
42、e 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; c) the results of the test, as indicated in Clause 9; d) any deviation from the test method specified; e) the date of the test. BS EN 1352
43、3-23:2015EN 13523-23:2015 (E) 9 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 3 EN ISO 3231:1997, Paints and varnis
44、hes - Determination of resistance to humid atmospheres containing sulfur dioxide (ISO 3231:1993) This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.B
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