1、Coil coated metals - Test methodsPart 24: Resistance to blocking and pressure markingBS EN 1352324:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEANSTANDARDNORME EUROPENNE EUROPISCHE NORMEN 13523-24 July 2017ICS 25.220.60 Supersedes EN 13523-24:2004English
2、VersionCoil coated metals - Test methods - Part 24: Resistance toblocking and pressure markingTles prlaques - Mthodesdessai Partie 24 :Rsistance ladhrence et aumarbrageBandbeschichtete Metalle - Prfverfahren - Teil 24: Block- und Stapelfestigkeit This European Standard was approved by CEN on 21 May
3、2017.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date lists and bibliographical referencesconcerning such national standards may be obtained on
4、 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 made bytranslation under the responsibility of a CEN member into its own language and notified to the CEN-CENELE
5、C ManagementCentre has the same status as the officialversions.CEN members are the nationalstandards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
6、via, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue
7、 Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reservedworldwide for CENnational Members.Ref. No. EN 13523-24:2017 ENational forewordThis British Standard is the UK implementation of EN 1352324:2017. It supersedes BS EN 1352324:2004, which is withdrawn.T
8、he UK participation in its preparation was entrusted to Technical Committee STI/21, Paint systems and surface preparation for metallic substrates.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the nec
9、essary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 94050 7ICS 25.220.60Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard
10、was published under the authority of the Standards Policy and Strategy Committee on 30 September 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 1352324:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-24 July 2017 ICS 25.220.60 Supersedes EN
11、13523-24:2004English Version Coil coated metals - Test methods - Part 24: Resistance to blocking and pressure marking Tles prlaques - Mthodes dessai Partie 24 : Rsistance ladhrence et au marbrage Bandbeschichtete Metalle - Prfverfahren - Teil 24: Block- und Stapelfestigkeit This European Standard wa
12、s approved by CEN on 21 May 2017. 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 alteration. Up-to-date lists and bibliographical references concerning such natio
13、nal 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 made by translation under the responsibility of a CEN member into its own langua
14、ge 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, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
15、Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORM
16、UNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13523-24:2017 EBS EN 1352324:2017EN 13523-24:2017 (E) 2 Contents Page European foreword . 3 Introduction 5 1
17、Scope 6 2 Normative references 6 3 Principle . 6 4 Apparatus . 6 5 Sampling . 6 6 Test panels . 6 7 Procedure. 6 7.1 General 6 7.2 Evaluation 7 7.2.1 Blocking/sticking 7 7.2.2 Transfer of gloss and pressure marks . 8 8 Expression of results 8 9 Precision . 8 10 Test report . 8 Bibliography 9 BS EN 1
18、352324:2017EN 13523-24:2017 (E) 3 European foreword This document (EN 13523-24:2017) has been prepared by Technical 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
19、an identical text or by endorsement, at the latest by January 2018, and conflicting national standards shall be withdrawn at the latest by January 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held respons
20、ible for identifying any or all such patent rights. This document supersedes EN 13523-24:2004. The main changes compared to the previous edition are: a) the in-laboratory jargon “eye to the sky” and “eye horizontal” are explained to a more technical term; b) the terms “light” and “heavy” in 7.2.2 ar
21、e explained; c) the text has been editorially revised and the normative references have been updated. The EN 13523 series, Coil coated metals Test methods, consists of the following parts: Part 0: General introduction Part 1: Film thickness Part 2: Gloss Part 3: Colour difference Instrumental compar
22、ison 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 8: Resistance to salt spray (fog) Part 9: Resistance to water immersion Part 10: Resistance to fluorescent
23、 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 BS EN 1352324:2017EN 13523-24:2017 (E) 4 Part 14: Chalking (Helmen method) Part 15: Metamerism Part 16: Resistance to abr
24、asion Part 17: Adhesion of strippable films Part 18: Resistance to staining Part 19: Panel design and method of atmospheric exposure testing Part 20: Foam adhesion Part 21: Evaluation of outdoor exposed panels Part 22: Colour difference Visual comparison Part 23: Resistance to humid atmospheres cont
25、aining sulfur dioxide Part 24: Resistance to blocking and pressure marking Part 25: Resistance 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) According to the CEN
26、-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungar
27、y, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1352324:2017EN 13523-24:2017 (E) 5 Introduction Pressure generated within a coil or a stack o
28、f sheets can affect the coating surface and cause marks of gloss transfer, plasticizer migration, etc. and even blocking/sticking. BS EN 1352324:2017EN 13523-24:2017 (E) 6 1 Scope This part of the EN 13523 series specifies the procedure for determining the resistance to blocking and/or pressure mark
29、ing of an organic coating on a metallic substrate. 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 edition cited applies. For undated references, the latest edit
30、ion of the referenced document (including any amendments) applies. EN 13523-0, Coil coated metals - Test methods - Part 0: General introduction EN 13523-4, Coil coated metals - Test methods - Part 4: Pencil hardness EN 23270, Paints and varnishes and their raw materials - Temperatures and humidities
31、 for conditioning and testing (ISO 3270) 3 Principle Test panels are placed on top of each other in a stack, the two surfaces to be evaluated being in contact. The stack is placed in a press, where a uniform pressure can be applied at an elevated temperature. 4 Apparatus Ordinary laboratory apparatu
32、s and glassware, together with the following: 4.1 Press, designed to ensure a uniform pressure at elevated temperature. Both pressure and temperature shall be adjustable. 5 Sampling In accordance with EN 13523-0. 6 Test panels In accordance with EN 13523-0. Test panels shall be flat and free from co
33、ntamination. NOTE A usual size of test panels is 120 mm 100 mm. Cut edges shall be flat and any burrs shall be removed. For each system under evaluation, there shall be at least two test samples plus one reference sample. 7 Procedure 7.1 General In general, samples can be tested after curing of the
34、coating, as soon as they are cooled down to room temperature. Place the panels in a stack, the two surfaces to be tested being in contact. Apply pressure to the samples by the press. BS EN 1352324:2017EN 13523-24:2017 (E) 7 Heat the stack in the press to the specified temperature. The test shall be
35、allowed to continue for the agreed period of time. Recommended values are: Pressure: 10 MPa. Coil is stored with the central core axis held vertically, so called “eye to (the) sky”. Pressure is caused only by the recoiling tension. Pressure: 100 MPa. Coil is stored with the central core axis horizon
36、tal, so called “eye to (the) side”. The weight of the coil results into additional pressure. This increased pressure is observed at the point of contact with the ground vertically through the coil wall. Temperature: 50 C. Duration: 24 h. For certain products and/or specific line parameters, other va
37、lues may be used. Allow the press with the stack to cool down to room temperature for 24 h whilst maintaining the pressure. Carry out the evaluation at room temperature. In cases of dispute, the evaluation temperature shall be (23 2) C and the relative humidity shall be (50 5) %, in accordance with
38、EN 23270. 7.2 Evaluation 7.2.1 Blocking/sticking Separate the panels and rate blocking/sticking, using the scale specified in Table 1. Table 1 Rating scheme for blocking/sticking Rating Blocking/sticking 0 The panels separate without sticking 1 The panels need to be separated using a light force 2 S
39、eparation can only be achieved using substantial force with an instrument, e.g. a knife, but without deforming the panels 3 Separation can only be achieved using an instrument, e.g. a knife, that will be forced between the samples, causing damage, pick off or permanent deformation 4 Separation canno
40、t be achieved BS EN 1352324:2017EN 13523-24:2017 (E) 8 7.2.2 Transfer of gloss and pressure marks After separating the panels and rating blocking and sticking, rate the pressure marking, using the scale specified in Table 2. Where relevant, the separated test panels shall be kept at room temperature
41、 until the 24 h assessment has been completed. Table 2 Rating scheme for pressure marking Rating Pressure marking 0 No pressure mark immediately after separation 1 No pressure marks remaining 24 h after separation 2 Light pressure marks i.e. barely visible on the surface with normal corrected vision
42、 in good lighting (see EN ISO 13076) and a low (85) observation angle remaining 24 h after separation 3 Heavy pressure marks i.e. easily visible on the surface with normal corrected vision in good lighting (see EN ISO 13076) and a low (85) observation angle remaining 24 h after separation. Heavy pre
43、ssure marks will cover more than 50 % of the inspected area. 4 Pressure marks remaining 24 h after separation which cannot be removed after subsequent heating NOTE The test can also give some indication of plasticizer migration. The degree of softening of a coating by the plasticizer used in either
44、the top or the backing coat is determined by checking the change in hardness according to EN 13523-4 and comparing to the reference sample. 8 Expression of results Blocking shall be expressed as a rate from 0 to 4 as described in 7.2.1. Pressure marks shall be expressed as a rate from 0 to 4 as desc
45、ribed in 7.2.2. 9 Precision No precision data are currently available. 10 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 the EN 13523 series (EN 13523-24); c) the coating system and
46、 coating parameters; d) the pressure, temperature and duration of the test; e) result of the test, as indicated in Clause 8; f) any deviation from the test method specified (e.g. time between production and testing); g) the date of the test. BS EN 1352324:2017EN 13523-24:2017 (E) 9 Bibliography 1 EN
47、 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 13076, Paints and varnishes - Lighting and procedure for visual assessments o
48、f coatings (ISO 13076) BS EN 1352324:2017This 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.BSI is incorporated by Royal Charter. British Standards a
49、nd other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)About usWe bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions.The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process. Organizations of all size
