1、August 2014 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).ICS
2、25.220.60!%:;/“2232412www.din.deDDIN EN 13523-14Coil coated metals Test methods Part 14: Chalking (Helmen method);English version EN 13523-14:2014,English translation of DIN EN 13523-14:2014-08Bandbeschichtete Metalle Prfverfahren Teil 14: Kreiden (Verfahren nach Helmen);Englische Fassung EN 13523-1
3、4:2014,Englische bersetzung von DIN EN 13523-14:2014-08Tles prlaques Mthodes dessai Partie 14: Farinage (mthode Helmen);Version anglaise EN 13523-14:2014,Traduction anglaise de DIN EN 13523-14:2014-08SupersedesDIN EN 13523-14:2001-12www.beuth.deDocument comprises 10 pagesIn case of doubt, the German
4、-language original shall be considered authoritative.07.14DIN EN 13523-14:2014-08 2 A comma is used as the decimal marker. National foreword This document (EN 13523-14:2014) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, (Secretariat: DIN, Germany), Working Group WG 9 “T
5、esting of coil coated metals” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Beschichtungsstoffe und Beschichtungen (DIN Standards Committee Coatings and Coating Materials), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Bes
6、chichtungsstoffe und Beschichtungen. Amendments This standard differs from DIN EN 13523-14:2001-12 as follows: a) the text has been editorially revised and normative references have been updated; b) in Subclause 4.2, rubbing with a finger as an alternative to rubbing with the plastic spatula for an
7、optimum adhesion between the tape and the coating has been added. Previous editions DIN EN 13523-14: 2001-12 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-14 June 2014 ICS 25.220.60 Supersedes EN 13523-14:2001English Version Coil coated metals - Test methods - Part 14: Chalking (Helmen
8、method) Tles prlaques - Mthodes dessai - Partie 14: Farinage (mthode Helmen) Bandbeschichtete Metalle - Prfverfahren - Teil 14: Kreiden (Verfahren nach Helmen) This European Standard was approved by CEN on 7 May 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which st
9、ipulate 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 Europea
10、n 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 the same status as the official versions. CEN members are t
11、he national standards bodies of Austria, Belgium, 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, Roman
12、ia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by
13、any means reserved worldwide for CEN national Members. Ref. No. EN 13523-14:2014 EEN 13523-14:2014 (E) 2 Contents Page Foreword 3 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Principle 6 5 Apparatus and materials .6 6 Sampling .6 7 Test specimens 6 8 Procedure .6 8.1 General 6 8.2
14、 Checking the adhesive tape .6 8.3 Calibration 7 8.4 Measurement 7 9 Expression of results 7 10 Precision .7 11 Test report 7 Bibliography 8 DIN EN 13523-14:2014-08 EN 13523-14:2014 (E) 3 Foreword This document (EN 13523-14:2014) has been prepared by Technical Committee CEN/TC 139 “Paints and varnis
15、hes”, 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 December 2014, and conflicting national standards shall be withdrawn at the latest by December 2014.
16、Attention 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 13523-14:2001. The main changes are: a) the text was edito
17、rially revised and the normative references were updated; b) in 8.4.2 rubbing with a finger as an alternative to rubbing with the plastic spatula for an optimum adhesion between the tape and the coating was added. EN 13523, Coil coated metals Test methods, consists of the following parts: Part 0: Ge
18、neral 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 cracking on bending (T-bend test) Part 8: Re
19、sistance 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: Chalking (H
20、elmen method) Part 15: Metamerism DIN EN 13523-14:2014-08 EN 13523-14:2014 (E) 4 Part 16: Resistance to abrasion 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 outdoo
21、r 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: Resistance to humid poulti
22、ce (Cataplasm test) Part 29: Resistance to environmental soiling (Dirt pick-up and striping) 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,
23、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, Switzerland, Turkey and the United Kin
24、gdom. DIN EN 13523-14:2014-08 EN 13523-14:2014 (E) 5 1 Scope This Part of EN 13523 describes the procedure for determining objectively the chalking resulting from natural or artificial weathering of an organic coating on a metallic substrate. The advantage of this procedure for measuring chalking of
25、 an organic coating is that the result can be read off immediately on an instrument. Subjective judgement by visual comparison of test specimens with reference specimens is not necessary. Reproducible results can only be obtained by careful execution of the test. Special attention is paid to the adh
26、esive tape and its application to the test surface. The test method is not applicable to embossed coatings. In the case of textured coatings, the degree of texture will influence readings. Also dirt collection can influence readings on outdoor weathered specimens. NOTE Different methods for assessin
27、g chalking are in use. The results of these different methods are not comparable. 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 unda
28、ted references, the latest edition of the referenced document (including any amendments) applies. EN 13523-0:2014, Coil coated metals Test methods Part 0: General introduction EN 13523-10, Coil coated metals Test methods Part 10: Resistance to fluorescent UV radiation and water condensation EN 13523
29、-19, Coil coated metals Test methods Part 19: Panel design and method of atmospheric exposure testing EN 23270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing (ISO 3270) EN 60454-2, Pressure-sensitive adhesive tapes for electrical purposes Part
30、2: Methods of test (IEC 60454-2) EN ISO 2813, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20, 60 and 85 (ISO 2813) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13523-0:2014 and the following apply. 3.1 chalki
31、ng appearance of a loosely adherent powder on the surface of a film or coat arising from the degradation of one or more of its constituents SOURCE: FprEN ISO 4618:2014, 2.41 DIN EN 13523-14:2014-08 EN 13523-14:2014 (E) 6 4 Principle Following the Helmen method, a piece of transparent adhesive tape i
32、s placed on the test surface and rubbed with a plastic spatula or a finger until there is optimum adhesion. Then the rubbed adhesive tape is removed and its transparency measured. Two types of apparatus can be used, one giving a direct reading for chalking, the other one measures transmission which
33、is converted to chalking as follows: x % transmission is equivalent to (100 x) % chalking. 5 Apparatus and materials 5.1 Portable chalking apparatus, giving a direct reading for chalking, commercially available such as the Helmen chalking tester, or 60 glossmeter or multi-angle glossmeter with 60 ad
34、justment, in accordance with EN ISO 2813, both with chalking adaptor. The type of light detector can influence the readings. A silicon photocell is therefore recommended. NOTE Differences in the light path between the light source and the photocell can influence readings. 5.2 Transparent pressure-se
35、nsitive adhesive tape, 25 mm wide, with an adhesion strength of (10 1) N per 25 mm width when tested in accordance with EN 60454-2, and checked as described in 8.2. 5.3 Plastic spatula, typically of 25 mm width, with a smooth surface. 6 Sampling See EN 13523-0. 7 Test specimens See EN 13523-0, EN 13
36、523-10, and EN 13523-19. 8 Procedure 8.1 General Measure the chalking of the organic coating at ambient temperature. For more accurate tests, as required for instance in case of dispute, the ambient temperature shall be (23 2) C and the relative humidity (50 5) %, in accordance with EN 23270. As dir
37、t collection can influence readings, outdoor weathered test specimens shall be measured after gentle cleaning of the area to be measured. The cleaning procedure shall be agreed between the interested parties but shall not remove any degradation products. 8.2 Checking the adhesive tape Measure the tr
38、ansmission of the adhesive tape (5.2) on an appropriate support. If the transmission is less than 90 %, that roll of adhesive tape shall not be used. DIN EN 13523-14:2014-08 EN 13523-14:2014 (E) 7 8.3 Calibration Calibrate the apparatus by applying a new piece of adhesive tape (5.2) onto the appropr
39、iate support and adjust the reading to be equivalent to 100 % transmission. Then remove the adhesive tape. 8.4 Measurement 8.4.1 Do not wipe or touch the test surface unless otherwise specified or agreed for the cleaning, as in the case of outdoor weathered specimens. 8.4.2 Apply a new piece of adhe
40、sive tape (5.2) of length about 30 mm to the flat test surface and rub with the plastic spatula (5.3) or a finger until there is optimum adhesion between the tape and the coating (as seen by the glossy, transparent appearance of the applied tape). 8.4.3 Remove the piece of tape carefully and uniform
41、ly from the test surface in a single movement and apply it to the support of the measuring instrument (5.1). Then take the reading. 9 Expression of results Express the result as a percentage of chalking. Values below 10 % chalking shall be expressed as “no chalking”. 10 Precision No precision data a
42、re currently available. 11 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 13523-14); c) the history of the test specimen (e.g. whether natural or artificial weathering)
43、; d) in the case of outdoor exposed test specimens: the cleaning procedure and whether dirt is present; e) the description of the measuring instrument used; f) the results of the test, as indicated in Clause 9; g) any deviation from the test method specified; h) any unusual features (anomalies) obse
44、rved during the test; i) the date of the test. DIN EN 13523-14:2014-08 EN 13523-14:2014 (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 Technic
45、al delivery conditions 3 EN ISO 4628-6, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 6: Assessment of degree of chalking by tape method (ISO 4628-6) 4 FprEN ISO 4618:2014, Paints and var
46、nishes Terms and definitions (ISO/FDIS 4618:2014) 5 T. Helmen: Kreidungsmessung und Kreidungsbeurteilung (Measurement and judgement of chalking), farbe + lack 84 (1978), 5, p. 315322 (This article also reports results of comparative testing by means of DIN 53159 and ASTM D 659.) DIN EN 13523-14:2014-08
