DIN EN 13523-15-2015 Coil coated metals - Test methods - Part 15 Metamerism German version EN 13523-15 2015《卷材涂层金属 试验方法 第15部分 位变异构 德文版本 EN 13523-15 2015》.pdf

1、September 2015 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).I

2、CS 25.220.60!%F02“2351315www.din.deDDIN EN 13523-15Coil coated metals Test methods Part 15: Metamerism;English version EN 13523-15:2015,English translation of DIN EN 13523-15:2015-09Bandbeschichtete Metalle Prfverfahren Teil 15: Metamerie;Englische Fassung EN 13523-15:2015,Englische bersetzung von D

3、IN EN 13523-15:2015-09Tles prlaques Mthodes dessai Partie 15: Mtamrisme;Version anglaise EN 13523-15:2015,Traduction anglaise de DIN EN 13523-15:2015-09SupersedesDIN EN 13523-15:2002-10www.beuth.deDocument comprises 11 pagesIn case of doubt, the German-language original shall be considered authorita

4、tive.08.1508.15DIN EN 13523-15:2015-09 2 A comma is used as the decimal marker. National foreword This document (EN ISO 13523-15:2015) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany), Working Group WG 9 “Testing of coil coated metals” (Secretari

5、at: DIN, Germany). The responsible German body involved in its preparation was the DIN-Normenausschuss Beschichtungsstoffe und Beschichtungen (DIN Standards Committee Coatings and Coating Materials), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen.

6、 Amendments This standard differs from DIN EN 13523-15:2002-10 as follows: a) the specification concerning the test illuminant of the spectrophotometer has been amended; b) the formulas in Clause 9 have been aligned with the current standards for colorimetry (EN ISO 11664-4) and metamerism index (DI

7、N 6172); c) a reference to EN 13523-0 concerning conditioning of the test panels has been added. Previous editions DIN EN 13523-15: 2002-10 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-15 July 2015 ICS 25.220.60 Supersedes EN 13523-15:2002English Version Coil coated metals - Test metho

8、ds - Part 15: Metamerism Tles prlaques - Mthodes dessai - Partie 15: Mtamrisme Bandbeschichtete Metalle - Prfverfahren - Teil 15: Metamerie 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 conditi

9、ons 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 Standard exists i

10、n 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 national standar

11、ds 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, Romania, Slovakia, Slove

12、nia, 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 2015 CEN All rights of exploitation in any form and by any means reserved

13、worldwide for CEN national Members. Ref. No. EN 13523-15:2015 EEN 13523-15:2015 (E) 2 Contents Page European foreword .3 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Principle 5 5 Apparatus .6 5.1 Spectrophotometer (see EN 13523-3) 6 6 Sampling .6 7 Test panels .6 8 Procedure .6 8

14、.1 Calibration 6 8.2 Measurement 6 9 Expression of results 7 10 Precision .7 11 Test report 8 Bibliography 9 DIN EN 13523-15:2015-09 EN 13523-15:2015 (E) 3 European foreword This document (EN 13523-15:2015) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, the secretariat o

15、f which is held by DIN. This document supersedes EN 13523-15:2002. 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 January 2016, and conflicting national standards shall be withdrawn at the latest

16、 by January 2016. 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. The main technical changes are: a) the specification concerning the

17、test illuminant of the spectrophotometer was amended; b) the formulas in Clause 9 were aligned with the current standards for colorimetry (EN ISO 11664-4) and metamerism index (DIN 6172); c) a reference to EN 13523-0 concerning conditioning of the test panels was added. EN 13523, Coil coated metals

18、Test methods, 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: R

19、esistance 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 scratching Part 13: Resistance to a

20、ccelerated ageing by the use of heat Part 14: Chalking (Helmen method) DIN EN 13523-15:2015-09 EN 13523-15:2015 (E) 4 Part 15: Metamerism 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 tes

21、ting Part 20: Foam 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 conden

22、sation 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/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Stan

23、dard: 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, Romania, Slovakia, Slovenia, Sp

24、ain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 13523-15:2015-09 EN 13523-15:2015 (E) 5 1 Scope This part of EN 13523 defines terms of the procedure for determining the metamerism of a colour match of an organic coating on a metallic substrate. When two colour specimens have identica

25、l spectral reflection curves, they are matching under any illuminant irrespective of its spectral characteristics. This is termed a “spectral match”. It is also possible for two colour specimens having different spectral reflection curves to match visually under a given light source but not to match

26、 under another light source with different spectral characteristics; such matches are termed “metameric”. One quantitative description of metamerism is the so-called “metamerism index”. The information of the metamerism index is of limited value where E (instrumental colour difference for a given il

27、luminant, see EN 13523-3) is 0,5. The metamerism index is not suited for determining the absolute colour difference or colour constancy of a given specimen at change of illuminant. The colour difference under the reference illuminant is to be measured in colour coordinates L*, a* and b* (see EN 1352

28、3-3). Excluded from this method are organic coatings producing fluorescence and/or which are multicoloured, pearlescent or metallic. 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 r

29、eferences, only the edition cited applies. For undated 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 13523-3, Coil coated metals - Test methods - Part 3: Colour differ

30、ence - Instrumental 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 definitions given in EN 13523-0 and the following apply. 3.1 metamerism

31、 phenomenon characterized by the difference in colour observed when two specimens visually matching under a given light source are viewed under another light source with different spectral characteristics 3.2 metamerism index calculated value of the degree to which a colour difference between two sp

32、ecimens changes when using different illuminants 4 Principle The colour difference of a colour match is determined under different illuminants. From the measured colour coordinates L*, a* and b* the metamerism index is calculated. DIN EN 13523-15:2015-09 EN 13523-15:2015 (E) 6 5 Apparatus 5.1 Spectr

33、ophotometer (see EN 13523-3) The spectrophotometer shall permit L*, a* and b* colour coordinates to be ascertained at least under standard illuminant D65 and 10 to standard observer and standard illuminant A and 10 to standard observer. Other test illuminants may be used, in which case it shall be s

34、tated in the test report. The circular measuring aperture shall have a minimum diameter of 10 mm. Illumination/viewing geometry: Geometries 45:0 or 0:45 are preferred but geometry d:8is also allowed. Any further conditions shall be the subject of a particular agreement. The spectrophotometer shall d

35、etect as little specular reflected light as possible. 6 Sampling See EN 13523-0. 7 Test panels See EN 13523-0. The surfaces to be measured shall be at least as large as the area of the measuring aperture and shall be flat against the measuring aperture. 8 Procedure 8.1 Calibration The apparatus shal

36、l be used in accordance with the manufacturers instructions, particularly with regard to warm-up time and calibration. 8.2 Measurement Condition the test samples in accordance with EN 13523-0:2014, Clause 6. Measure the colour coordinates at ambient temperature ensuring that the temperature is withi

37、n the range stated by the manufacturer of the apparatus. In cases of dispute, the measurement shall be carried out under conditions of (23 2) C and a relative humidity of (50 5) %, in accordance with EN 23270. One of the specimens shall be designated the reference specimen. First measure the colour

38、coordinates of the reference specimen and then the colour coordinates of the test specimen. DIN EN 13523-15:2015-09 EN 13523-15:2015 (E) 7 9 Expression of results Calculate the metamerism index MI, using the following formula: 2/12*r*t2*r*t2*r*t)()()(MI bbaaLL += where subscript t is the test illumi

39、nant being used, e.g. standard illuminant A, or a “warm white” type fluorescent lamp illuminant; subscript r is the reference illuminant (standard illuminant D65); *tstd,*tspl,*t LLL = *rstd,*rspl,*r LLL = * *t spl,t std,t a aa= *rstd,*rspl,*r aaa = *tstd,*tspl,*t bbb = *rstd,*rspl,*r bbb = where su

40、bscript std is the reference specimen (standard); subscript spl is the test specimen (sample). 10 Precision No precision data are currently available. DIN EN 13523-15:2015-09 EN 13523-15:2015 (E) 8 11 Test report The test report shall contain at least the following information: a) all details necess

41、ary to identify the product tested; b) a reference to this part of EN 13523 (EN 13523-15); c) the type of instrument used; d) the illuminants used; e) the geometry used; f) the metamerism index, as indicated in Clause 9; g) the components of the metamerism index, if required; h) any deviation from t

42、he test method specified; i) the date of the test. DIN EN 13523-15:2015-09 EN 13523-15:2015 (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 11664 (all parts), Colorimetry (ISO 11664) 4 ISO 18314 (all parts), Analytical colorimetry 5 CIE 15, Colorimetry 6 DIN 6172:2014, Metamerism-index for pairs of samples at change of illuminant DIN EN 13523-15:2015-09