1、March 2014 Translation by DIN-Sprachendienst.English price group 12No 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、87.040!%,“2099059www.din.deDDIN EN ISO 16474-3Paints and varnishes Methods of exposure to laboratory light sources Part 3: Fluorescent UV lamps (ISO 16474-3:2013);English version EN ISO 16474-3:2013,English translation of DIN EN ISO 16474-3:2014-03Beschichtungsstoffe Knstliches Bestrahlen oder Bewit
3、tern in Gerten Teil 3: UV-Fluoreszenzlampen (ISO 16474-3:2013);Englische Fassung EN ISO 16474-3:2013,Englische bersetzung von DIN EN ISO 16474-3:2014-03Peintures et vernis Mthodes dexposition des sources lumineuses de laboratoire Partie 3: Lampes fluorescentes UV (ISO 16474-3:2013);Version anglaise
4、EN ISO 16474-3:2013,Traduction anglaise de DIN EN ISO 16474-3:2014-03Together withDIN EN ISO 16474-1:2014-03,supersedesDIN EN ISO 11507:2007-05www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 24 pages02.14 DIN EN ISO 16474-3:2014-03 2 A
5、comma is used as the decimal marker. National foreword This document (EN ISO 16474-3:2013) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible German body in
6、volved in its preparation was the Normenausschuss Beschichtungsstoffe und Beschichtungen (Coatings and Coating Materials Standards Committee), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. DIN EN ISO 16474 consists of the following parts, under
7、the general title Paints and varnishes Methods of exposure to laboratory light sources: Part 1: General guidance Part 2: Xenon-arc lamps Part 3: Fluorescent UV lamps The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1514 DIN EN ISO 1514 I
8、SO 2808 DIN EN ISO 2808 ISO 4618 DIN EN ISO 4618 ISO 4892-3 DIN EN ISO 4892-3 ISO 16474-1 DIN EN ISO 16474-1 Amendments This standard differs from DIN EN ISO 11507:2007-05 as follows: a) general guidance on artificial weathering has been transferred to DIN EN ISO 16474-1; b) specifications concernin
9、g fluorescent UV lamps have been transferred to DIN EN ISO 16474-3. Previous editions DIN EN ISO 11507: 2002-01, 2007-05 DIN EN ISO 16474-3:2014-03 3 National Annex NA (informative) Bibliography DIN EN ISO 1514, Paints and varnishes Standard panels for testing DIN EN ISO 2808, Paints and varnishes D
10、etermination of film thickness DIN EN ISO 4618, Paints and varnishes Terms and definitions DIN EN ISO 4892-3, Plastics Methods of exposure to laboratory light sources Part 1: General guidance DIN EN ISO 16747-1, Paints and varnishes Methods of exposure to laboratory light sources Part 1: General gui
11、dance DIN EN ISO 16474-3:2014-03 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM November 2013 ICS 87.040 Supersedes EN ISO 11507:2007English Version Paints and varnishes - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps (ISO 16474-
12、3:2013) Peintures et vernis - Mthodes dexposition des sources lumineuses de laboratoire - Partie 3: Lampes fluorescentes UV (ISO 16474-3:2013) Beschichtungsstoffe - Knstliches Bestrahlen oder Bewittern in Gerten - Teil 3: UV-Fluoreszenzlampen (ISO 16474-3:2013) This European Standard was approved by
13、 CEN on 26 October 2013. 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 national stand
14、ards 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 language and no
15、tified 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, Hungary,
16、Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC M
17、anagement Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 16474-3:2013 EEN ISO 16474-3Contents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references. 5 3 Terms and
18、definitions 5 4 Principle 6 5 Apparatus 7 5.1 Laboratory light source . 7 5.2 Test chamber 10 5.3 Radiometer 10 5.4 Black-standard/black-panel thermometer . 10 5.5 Wetting and humidity . 11 5.6 Specimen holders 11 5.7 Apparatus to assess changes in properties . 11 6 Test specimens (panels) . 11 6.1
19、General 11 6.2 Preparation and coating 12 6.3 Drying and conditioning 12 6.4 Thickness of coating 12 6.5 Number of test panels 12 7 Test conditions . 12 7.1 Radiation . 12 7.2 Temperature 12 7.3 Relative humidity of chamber air 13 7.4 Condensation and spray cycles . 13 7.5 Complex cycles with dark p
20、eriods . 13 7.6 Sets of exposure conditions . 13 8 Procedure and mounting of the test specimens . 14 8.1 General 14 8.2 Exposure . 14 8.3 Measurement of radiant exposure 15 8.4 Determination of changes in properties after exposure 15 9 Test report . 15 Annex A (informative) Spectral distribution of
21、radiation for typical fluorescent UV lamps . 16 Bibliography 20 2DIN EN ISO 16474-3:2014-03EN ISO 16474-3:2013 (E) Foreword This document (EN ISO 16474-3:2013) has been prepared by Technical Committee ISO/TC 35 Paints and varnishes in collaboration with Technical Committee CEN/TC 139 “Paints and var
22、nishes” 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 May 2014, and conflicting national standards shall be withdrawn at the latest by May 2014. Attentio
23、n 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 ISO 11507:2007. According to the CEN-CENELEC Internal Regulations,
24、 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, La
25、tvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 16474-3:2013 has been approved by CEN as EN ISO 16474-3:2013 without any modification. “”3DIN EN ISO 1
26、6474-3:2014-03 EN ISO 16474-3:2013 (E) IntroductionCoatings of paints, varnishes and similar materials (subsequently referred to simply as coatings) are exposed to laboratory light sources, in order to simulate in the laboratory the ageing processes which occur during natural weathering or behind wi
27、ndow glass.4DIN EN ISO 16474-3:2014-03EN ISO 16474-3:2013 (E) 1 ScopeThis part of ISO 16474 specifies methods for exposing coatings to fluorescent UV lamps, heat and water in apparatus designed to reproduce the weathering effects that occur when materials are exposed in actual end-use environments t
28、o daylight, or to daylight through window glass.The coatings are exposed to different types of fluorescent UV lamps under controlled environmental conditions (temperature, humidity and/or water). Different types of fluorescent UV lamp may be used to meet all the requirements for testing different ma
29、terials.Specimen preparation and evaluation of the results are covered in other ISO documents for specific materials.General guidance is given in ISO 16474-1.NOTE Fluorescent UV lamp exposures for plastics are described in ISO 4892-3.2 Normative referencesThe following documents, in whole or in part
30、, 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 edition of the referenced document (including any amendments) applies.ISO 1514, Paints and varnishes Standard panels for t
31、estingISO 2808, Paints and varnishes Determination of film thicknessISO 4618, Paints and varnishes Terms and definitionsISO 9370, Plastics Instrumental determination of radiant exposure in weathering tests General guidance and basic test methodISO 16474-1, Paints and varnishes Methods of exposure to
32、 laboratory light sources Part 1: General guidance3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.3.1radiant exposureHamount of radiant energy to which a test panel has been exposedNote 1 to entry: Radiant exposure is give
33、n by the equation HEt=d5DIN EN ISO 16474-3:2014-03 EN ISO 16474-3:2013 (E) whereH is the radiant exposure, in joules per square metre;E is the irradiance, in watts per square metre;t is the exposure time, in secondsNote 2 to entry: If the irradiance E is constant throughout the whole exposure time,
34、the radiant exposure H is given simply by the product of E and t.4 Principle4.1 Fluorescent UV lamps, when properly maintained, can be used to simulate the spectral irradiance of daylight in the ultraviolet (UV) region of the spectrum.4.2 Specimens are exposed to various levels of UV radiation, heat
35、 and moisture (see 4.4) under controlled environmental conditions.4.3 The exposure conditions may be varied by selection of:a) the type of fluorescent lamp (spectral power distribution);b) the irradiance level;c) the temperature during the UV exposure;d) the relative humidity of the chamber air duri
36、ng the light and dark exposures, when test conditions requiring control of humidity are used;NOTE Commercial fluorescent UV lamp devices mostly do not provide means of relative humidity control.e) the type of wetting (see 4.4);f) the wetting temperature and cycle;g) the timing of the UV/dark cycle.4
37、.4 Wetting is usually produced by condensation of water vapour onto the exposed specimen surface or by spraying the test specimens with demineralized/deionized water.4.5 The procedure(s) may include measurement of the irradiance and the radiant exposure in the plane of the specimen.4.6 It is recomme
38、nded that a similar material of known performance (a control) be exposed simultaneously with the test specimens to provide a standard for comparative purposes.4.7 Intercomparison of results obtained from specimens exposed in different apparatus or to different types of lamp should not be made unless
39、 an appropriate statistical relationship has been established between the different types of equipment for the material to be tested.6DIN EN ISO 16474-3:2014-03EN ISO 16474-3:2013 (E) 5 Apparatus5.1 Laboratory light source5.1.1 Fluorescent UV lamps are fluorescent lamps in which radiant emission in
40、the ultraviolet region of the spectrum, i.e. below 400 nm, makes up at least 80 % of the total light output. There are three types of fluorescent UV lamp used in this part of ISO 16474: Type 1A (UVA-340) fluorescent UV lamp: These lamps have a radiant emission below 300 nm of less than 1 % of the to
41、tal light output, have an emission peak at 343 nm, and are more commonly identified as UVA-340 for simulation of daylight from 300 nm to 340 nm (see Table 1, column A.1). Figure A.1 is a graph of spectral irradiance from 250 nm to 400 nm of a typical type 1A (UVA-340) fluorescent lamp compared to da
42、ylight. Type 1B (UVA-351) fluorescent UV lamp: These lamps have a radiant emission below 310 nm of less than 1 % of the total light output, have a peak emission at 353 nm, and are more commonly identified as UVA-351 for simulation of the UV portion of daylight behind window glass (see Table 2). Figu
43、re A.2 is a graph of spectral irradiance from 250 nm to 400 nm of a typical type 1B (UVA-351) fluorescent UV lamp compared to daylight filtered by window glass. Type 2 (UVB-313) fluorescent UV lamp: These lamps are more commonly identified as UVB-313 and have a radiant emission below 300 nm that is
44、more than 10 % of the total output and a peak emission at 313 nm (see Table 3). Figure A.3 is a graph of the spectral irradiance from 250 nm to 400 nm of two typical type 2 (UVB-313) fluorescent lamps compared to daylight. Type 2 (UVB-313) lamps may be used only by agreement between the parties conc
45、erned. Such agreement shall be stated in the test report.NOTE 1 Type 2 (UVB-313) lamps have a spectral distribution of radiation which peaks near the 313 nm mercury line and might emit radiation down to = 254 nm, which can initiate ageing processes that never occur in end-use environments.NOTE 2 The
46、 solar spectral irradiance for a number of different atmospheric conditions is described in CIE No. 85.2The benchmark daylight used in this part of ISO 16474 is from CIE No. 85:1989, Table 4.5.1.2 Unless otherwise specified, type 1A (UVA-340) fluorescent UV lamps or corresponding type 1A fluorescent
47、 UV lamp combinations shall be used to simulate the UV part of daylight (see Table 4, method A). Unless otherwise specified, type 1B (UVA-351) lamps shall be used to simulate the UV part of daylight through window glass (see Table 4, method B).5.1.3 Fluorescent lamps age significantly with extended
48、use. If an automatic irradiance control system is not used, follow the apparatus manufacturers instructions on the procedure necessary to maintain the desired irradiance.5.1.4 Irradiance uniformity shall be in accordance with the requirements specified in ISO 16474-1. Requirements for periodic repos
49、itioning of specimens when irradiance within the exposure area is less than 90 % of the peak irradiance are described in ISO 16474-1.7DIN EN ISO 16474-3:2014-03 EN ISO 16474-3:2013 (E) Table 1 Relative ultraviolet spectral irradiance for type 1A lamps for daylight UV (method A) a, bSpectral pass-band Minimum cCIE No. 85:1989, Table 4 d,eMaximum c( = wavelength in nm) % % % 290 0 0,1290 320 5,9 5,4 9,3320 360 60,9 38,
