1、BSI Standards PublicationBS EN ISO 16474-3:2013Paints and varnishes Methods of exposure tolaboratory light sourcesPart 3: Fluorescent UV lamps (ISO16474-3:2013)Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networki
2、ng permitted without license from IHS-,-,-BS EN ISO 16474-3:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 16474-3:2013. Together with BS EN ISO 16474-1:2013 it supersedes BS EN ISO 11507:2007, which is withdrawn.This publication incorporates CEN corre
3、ction notice 18 December 2013, which corrects the supersession information.The UK participation in its preparation was entrusted to Technical Committee STI/10, Test methods for paints.A list of organizations represented on this committee can be obtained on request to its secretary.This publication d
4、oes not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 71945 5 ICS 87.040 Compliance with a British Standard cannot confer immunity from le
5、gal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2014.Amendments/corrigenda issued since publicationDate Text affectedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy
6、 Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 16474-3 November 2013 ICS 87.040 English Version Paints and varnishes - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps (ISO 164
7、74-3:2013) 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
8、 by 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 st
9、andards 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
10、 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, Hungar
11、y, 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-CENELE
12、C Management 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 ECopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not fo
13、r ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 16474-3:2013EN ISO 16474-3:2013 (E) 3 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 “Pa
14、ints 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 an identical text or by endorsement, at the latest by May 2014, and conflicting national standards shall be withdrawn at the latest by May 20
15、14. 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 ISO 11507:2007. According to the CEN-CENELEC Internal
16、Regulations, 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, Irelan
17、d, Italy, Latvia, 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. Cop
18、yright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 16474-3:2013ISO 16474-3:2013(E) ISO 2013 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope .
19、 12 Normative references 13 Terms and definitions . 14 Principle 25 Apparatus . 35.1 Laboratory light source . 35.2 Test chamber 65.3 Radiometer . 65.4 Black-standard/black-panel thermometer . 65.5 Wetting and humidity . 75.6 Specimen holders . 75.7 Apparatus to assess changes in properties 76 Test
20、specimens (panels) . 76.1 General . 76.2 Preparation and coating 86.3 Drying and conditioning . 86.4 Thickness of coating . 86.5 Number of test panels . 87 Test conditions . 87.1 Radiation 87.2 Temperature 87.3 Relative humidity of chamber air . 97.4 Condensation and spray cycles . 97.5 Complex cycl
21、es with dark periods . 97.6 Sets of exposure conditions . 98 Procedure and mounting of the test specimens .108.1 General 108.2 Exposure 108.3 Measurement of radiant exposure 118.4 Determination of changes in properties after exposure 119 Test report 11Annex A (informative) Spectral distribution of r
22、adiation for typical fluorescent UV lamps 12Bibliography .16Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 16474-3:2013ISO 16474-3:2013(E)ForewordISO (the
23、International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee
24、 has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnic
25、al standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in
26、accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directivesAttention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details
27、of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.
28、For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible fo
29、r this document is ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes.This first edition of ISO 16474-3, together with ISO 16474-1 cancels and replaces ISO 11507:2007, which has been technically revised. ISO 16474 consists of the following parts, under
30、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 Part 4: Open-flame carbon-arc lampsiv ISO 2013 All rights reservedCopyright British Standards Institution Provided by IHS under licens
31、e with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 16474-3:2013ISO 16474-3:2013(E)IntroductionCoatings of paints, varnishes and similar materials (subsequently referred to simply as coatings) are exposed to laboratory light sou
32、rces, in order to simulate in the laboratory the ageing processes which occur during natural weathering or behind window glass. ISO 2013 All rights reserved vCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking
33、 permitted without license from IHS-,-,-BS EN ISO 16474-3:2013Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 16474-3:2013Paints and varnishes Methods of ex
34、posure to laboratory light sources Part 3: Fluorescent UV lamps1 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
35、to 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 m
36、aterials.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 par
37、t, 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
38、testingISO 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 t
39、o 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 giv
40、en by the equation HEt=dINTERNATIONAL STANDARD ISO 16474-3:2013(E) ISO 2013 All rights reserved 1Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 16474-3:201
41、3ISO 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, the radiant exposure H is given simply by the product o
42、f 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 and moisture (see 4.4) under controlled environmental
43、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 during the light and dark exposures, when test conditions r
44、equiring 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.4.4 Wetting is usually produced by condensation of water
45、 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 recommended that a similar material of known performance (a co
46、ntrol) 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 an appropriate statistical relationship has been estab
47、lished between the different types of equipment for the material to be tested.2 ISO 2013 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO
48、16474-3:2013ISO 16474-3:2013(E)5 Apparatus5.1 Laboratory light source5.1.1 Fluorescent UV lamps are fluorescent lamps in which radiant emission in 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 total light output, have an emission peak at 343 nm, and are more commonly identified as UVA-340 for si
